eclipse连接数据库出错

问题如下： eclipse能加载数据库驱动，却不能连接  eclipse、mysql环境配置都没问题 数据库版本是8.0以上 驱动程序mysql-connector-java-8.0.16放的位置也没错 mysql可以用控制台操作 mysql服务已启动 用户名是root 密码123456 ``` C:\Users\HP>mysql -uroot -p Enter password: ****** Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 23 Server version: 8.0.17 MySQL Community Server - GPL ``` 创建好了database student ``` mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | register | | student | | sys | +--------------------+ 6 rows in set (0.00 sec) ``` 搞了半天头都大了，这块搞不定下面的javaweb根本没法学，求大佬指导。

eclipse运行控制台出现这个

用法: javaw [-options] class [args...] (执行类) 或 javaw [-options] -jar jarfile [args...] (执行 jar 文件) 其中选项包括: -d32 使用 32 位数据模型 (如果可用) -d64 使用 64 位数据模型 (如果可用) -client 选择 "client" VM -server 选择 "server" VM -hotspot 是 "client" VM 的同义词 [已过时] 默认 VM 是 client. -cp <目录和 zip/jar 文件的类搜索路径> -classpath <目录和 zip/jar 文件的类搜索路径> 用 ; 分隔的目录, JAR 档案 和 ZIP 档案列表, 用于搜索类文件。 -D<名称>=<值> 设置系统属性 -verbose:[class|gc|jni] 启用详细输出 -version 输出产品版本并退出 -version:<值> 需要指定的版本才能运行 -showversion 输出产品版本并继续 -jre-restrict-search | -no-jre-restrict-search 在版本搜索中包括/排除用户专用 JRE -? -help 输出此帮助消息 -X 输出非标准选项的帮助 -ea[:<packagename>...|:<classname>] -enableassertions[:<packagename>...|:<classname>] 按指定的粒度启用断言 -da[:<packagename>...|:<classname>] -disableassertions[:<packagename>...|:<classname>] 禁用具有指定粒度的断言 -esa | -enablesystemassertions 启用系统断言 -dsa | -disablesystemassertions 禁用系统断言 -agentlib:<libname>[=<选项>] 加载本机代理库 <libname>, 例如 -agentlib:hprof 另请参阅 -agentlib:jdwp=help 和 -agentlib:hprof=help -agentpath:<pathname>[=<选项>] 按完整路径名加载本机代理库 -javaagent:<jarpath>[=<选项>] 加载 Java 编程语言代理, 请参阅 java.lang.instrument -splash:<imagepath> 使用指定的图像显示启动屏幕

用gradle构建的springboot项目，为什么在cmd中java -jar命令执行build/libs下的jar包会出错

java javac java-version控制台都正常 jdk版本是1.8 gradle版本是5.1.1 springboot版本是1.5.2 使用gradle build构建完spring boot项目后 再用java -jar命令执行后就出错了  D:\Program Files\eclipse2018\eclipse2018workspace\init-start\build\libs>java -jar init-start-0.0.1-SNAPSHOT.jar Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/SpringApplication at com.zhou.spring.boot.blog.initstart.InitStartApplication.main(InitStartApplication.java:10) ... 8 more Caused by: java.lang.ClassNotFoundException: org.springframework.boot.SpringApplication at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:94) at java.lang.ClassLoader.loadClass(Unknown Source) ... 9 more 一天了弄不好，是什么原因，其他文件javac编译和java执行都是正常的

eclipse启动动态项目run on server，tomcat起不来

小白一枚，跪求大神解答，eclipse启动动态项目run on server，tomcat起不来，请问这个情况如何解决 控制台信息如下： 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server.服务器版本: Apache Tomcat/9.0.19 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server.构建: Apr 12 2019 14:22:48 UTC 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server version number: 9.0.19.0 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Name: Windows 7 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS.版本: 6.1 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: 结.造: amd64 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Java 环境变量: C:\Program Files\Java\jre1.8.0_73 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM 版本: 1.8.0_73-b02 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM.供应商: Oracle Corporation 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_BASE: E:\workspace\program\.metadata\.plugins\org.eclipse.wst.server.core\tmp1 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_HOME: D:\apache-tomcat-9.0.19 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.base=E:\workspace\program\.metadata\.plugins\org.eclipse.wst.server.core\tmp1 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.home=D:\apache-tomcat-9.0.19 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dwtp.deploy=E:\workspace\program\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Djava.endorsed.dirs=D:\apache-tomcat-9.0.19\endorsed 十二月 04, 2019 10:34:27 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dfile.encoding=GBK 十二月 04, 2019 10:34:27 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: Loaded APR based Apache Tomcat Native library [1.2.21] using APR version [1.6.5]. 十二月 04, 2019 10:34:27 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. 十二月 04, 2019 10:34:27 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] 十二月 04, 2019 10:34:27 下午 org.apache.catalina.core.AprLifecycleListener initializeSSL 信息: OpenSSL successfully initialized [OpenSSL 1.1.1a 20 Nov 2018] 十二月 04, 2019 10:34:28 下午 org.apache.coyote.AbstractProtocol init 信息: 初始化协议处理器 ["http-nio-8080"] 十二月 04, 2019 10:35:10 下午 org.apache.catalina.util.LifecycleBase handleSubClassException 严重: 初始化组件[Connector[HTTP/1.1-8080]]失败。 org.apache.catalina.LifecycleException: Protocol handler initialization failed at org.apache.catalina.connector.Connector.initInternal(Connector.java:983) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) at org.apache.catalina.core.StandardService.initInternal(StandardService.java:535) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:1059) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) at org.apache.catalina.startup.Catalina.load(Catalina.java:584) at org.apache.catalina.startup.Catalina.load(Catalina.java:607) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:306) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:491) Caused by: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source) at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at sun.nio.ch.PipeImpl.<init>(Unknown Source) at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source) at java.nio.channels.Pipe.open(Unknown Source) at sun.nio.ch.WindowsSelectorImpl.<init>(Unknown Source) at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source) at java.nio.channels.Selector.open(Unknown Source) at org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector(NioSelectorPool.java:54) at org.apache.tomcat.util.net.NioSelectorPool.close(NioSelectorPool.java:109) at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:341) at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1121) at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:1129) at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:557) at org.apache.coyote.http11.AbstractHttp11Protocol.init(AbstractHttp11Protocol.java:74) at org.apache.catalina.connector.Connector.initInternal(Connector.java:980) ... 13 more Caused by: java.net.ConnectException: Connection timed out: connect at sun.nio.ch.Net.connect0(Native Method) at sun.nio.ch.Net.connect(Unknown Source) at sun.nio.ch.Net.connect(Unknown Source) at sun.nio.ch.SocketChannelImpl.connect(Unknown Source) at java.nio.channels.SocketChannel.open(Unknown Source) at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(Unknown Source) ... 30 more 十二月 04, 2019 10:35:10 下午 org.apache.coyote.AbstractProtocol init 信息: 初始化协议处理器 ["ajp-nio-8009"] 十二月 04, 2019 10:35:52 下午 org.apache.catalina.util.LifecycleBase handleSubClassException 严重: 初始化组件[Connector[AJP/1.3-8009]]失败。 org.apache.catalina.LifecycleException: Protocol handler initialization failed at org.apache.catalina.connector.Connector.initInternal(Connector.java:983) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) at org.apache.catalina.core.StandardService.initInternal(StandardService.java:535) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:1059) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) at org.apache.catalina.startup.Catalina.load(Catalina.java:584) at org.apache.catalina.startup.Catalina.load(Catalina.java:607) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:306) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:491) Caused by: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source) at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at sun.nio.ch.PipeImpl.<init>(Unknown Source) at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source) at java.nio.channels.Pipe.open(Unknown Source) at sun.nio.ch.WindowsSelectorImpl.<init>(Unknown Source) at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source) at java.nio.channels.Selector.open(Unknown Source) at org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector(NioSelectorPool.java:54) at org.apache.tomcat.util.net.NioSelectorPool.close(NioSelectorPool.java:109) at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:341) at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1121) at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:1129) at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:557) at org.apache.catalina.connector.Connector.initInternal(Connector.java:980) ... 13 more Caused by: java.net.ConnectException: Connection timed out: connect at sun.nio.ch.Net.connect0(Native Method) at sun.nio.ch.Net.connect(Unknown Source) at sun.nio.ch.Net.connect(Unknown Source) at sun.nio.ch.SocketChannelImpl.connect(Unknown Source) at java.nio.channels.SocketChannel.open(Unknown Source) at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(Unknown Source) ... 29 more 十二月 04, 2019 10:35:52 下午 org.apache.catalina.startup.Catalina load 信息: 服务器在[85,235]毫秒内初始化 十二月 04, 2019 10:35:52 下午 org.apache.catalina.core.StandardService startInternal 信息: Starting service [Catalina] 十二月 04, 2019 10:35:52 下午 org.apache.catalina.core.StandardEngine startInternal 信息: Starting Servlet engine: [Apache Tomcat/9.0.19] 十二月 04, 2019 10:35:53 下午 org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom 警告: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [557] milliseconds. 十二月 04, 2019 10:35:53 下午 org.apache.jasper.servlet.TldScanner scanJars 信息: 至少有一个JAR被扫描用于TLD但尚未包含TLD。 为此记录器启用调试日志记录，以获取已扫描但未在其中找到TLD的完整JAR列表。 在扫描期间跳过不需要的JAR可以缩短启动时间和JSP编译时间。 十二月 04, 2019 10:35:53 下午 org.apache.catalina.startup.Catalina start 信息: Server startup in [1,428] milliseconds

Springmvc上传文件限制大小，异常处理返回报错信息后，eclipse控制台还报错

**1、web.xml配置:** ``` <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <!-- 注册主控制器DispatcherServlet --> <servlet> <servlet-name>DispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 指定spring配置文件位置 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>DispatcherServlet</servlet-name> <url-pattern>*.from</url-pattern> </servlet-mapping> <!-- 指定读取所有文件的编码格式 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app> ``` **spring的applicationContext.xml配置：** ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"> <!-- 定义自动扫描组件 --> <context:component-scan base-package="controller"></context:component-scan> <!-- 定义@RequestMapping映射的注解驱动 --> <mvc:annotation-driven></mvc:annotation-driven> <!-- 定义视图解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix"> <value>/WEB-INF/jsp/</value> </property> <property name="suffix"> <value>.jsp</value> </property> </bean> <!-- 注册spring web mvc中处理上传事件的组件CommonsMultipartResolver, 而具体怎样处理上传文件，则是由导入的包common-upload.jar和common-io.jar去处理--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="10240"></property> <property name="resolveLazily" value="true"></property> </bean> </beans> ``` **java代码Controller处理：** ``` package controller; import java.io.File; import java.util.HashMap; import java.util.Map; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MaxUploadSizeExceededException; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.ModelAndView; @Controller public class UploadController { // 访问upload.jsp页面 @RequestMapping("/toUpload") public String toUpload() { return "upload"; } @RequestMapping("/upload") public String upload(@RequestParam("file") MultipartFile file, HttpServletRequest request, ModelMap model) throws Exception { // 判断提交来的文件是否为空 if (file.isEmpty()) { // model.addAttribute("error", "上传文件不能为空"); // return "upload"; throw new RuntimeException("file is null"); } // 获取文件所要保存目录在服务器上所对应的实际路径 String path = request.getSession().getServletContext().getRealPath( "upload"); System.out.println(path); // 组成拥有真实路径的一个完整的地址字符串 String fileUrl = path + "\\" + file.getOriginalFilename(); // 封装上传文件名称到model对象中 model.addAttribute("fileName", file.getOriginalFilename()); // 根据这个完整地址字符串，生成提交文件所要保存到的目标文件或目录的对象 File targetFile = new File(fileUrl); // 判断目标文件或目录的对象是否已经存在 if (!targetFile.exists()) { targetFile.mkdirs(); } // 传送文件到目标对象 file.transferTo(targetFile); System.out.println("已上传文件：" + file); return "ok"; } @ExceptionHandler public ModelAndView doException(Exception e,HttpServletRequest request) throws Exception { Map<String,Object> map = new HashMap<String,Object>(); if (e instanceof MaxUploadSizeExceededException) { long maxSize = ((MaxUploadSizeExceededException) e) .getMaxUploadSize(); map.put("error", "上传文件太大，不能超过" + maxSize / 1024 + "k"); }else if(e instanceof RuntimeException){ map.put("error", "未选中文件"); }else{ map.put("error", "上传失败"); } return new ModelAndView("upload",map); } } ``` **上传文件页面upload.jsp：** ``` <%@ page pageEncoding="UTF-8" contentType="text/html;charset=UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>上传页面</title> </head> <body> <form action="upload.from" method="post" enctype="multipart/form-data"> <input type="file" name="file"/> <input type="submit" value="上传"/><font color="red">${error}</font> </form> </body> </html> ``` **上传成功页面ok.jsp：** ``` <%@ page pageEncoding="UTF-8" contentType="text/html;charset=UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>ok.jsp</title> </head> <body> <h1>上传成功</h1> <a href="upload/${fileName}">${fileName}</a> </body> </html> ``` **eclipse控制台报错信息如下：** ``` 五月 01, 2015 10:27:01 下午 org.springframework.web.multipart.commons.CommonsMultipartResolver cleanupMultipart 警告: Failed to perform multipart cleanup for servlet request org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size of 10240 bytes exceeded; nested exception is org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (19243) exceeds the configured maximum (10240) at org.springframework.web.multipart.commons.CommonsMultipartResolver.parseRequest(CommonsMultipartResolver.java:160) at org.springframework.web.multipart.commons.CommonsMultipartResolver$1.initializeMultipart(CommonsMultipartResolver.java:131) at org.springframework.web.multipart.support.AbstractMultipartHttpServletRequest.getMultipartFiles(AbstractMultipartHttpServletRequest.java:119) at org.springframework.web.multipart.support.AbstractMultipartHttpServletRequest.getMultiFileMap(AbstractMultipartHttpServletRequest.java:99) at org.springframework.web.multipart.commons.CommonsMultipartResolver.cleanupMultipart(CommonsMultipartResolver.java:188) at org.springframework.web.servlet.DispatcherServlet.cleanupMultipart(DispatcherServlet.java:1062) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855) at javax.servlet.http.HttpServlet.service(HttpServlet.java:650) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2476) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2465) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (19243) exceeds the configured maximum (10240) at org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:914) at org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:331) at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:349) at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126) at org.springframework.web.multipart.commons.CommonsMultipartResolver.parseRequest(CommonsMultipartResolver.java:156) ... 37 more ``` 上传文件超过限制大小，异常处理后页面返回了提示信息“上传文件太大，不能超过10k”，但是为啥eclipse的控制台还是有报错呢？

springboot 配置多库之后,mybatis在控制台不打印sql语句了

springboot项目 单库下,mybatis只需要添加如下配置,就可以打印sql语句 ```xml <!-- 打印查询语句 --> <setting name="logImpl" value="STDOUT_LOGGING" /> ``` 但是多库环境下,mybatis不论怎么设置,都无法打印sql语句..... ---- ---- 项目中的相关配置: mybatis配置: ```xml <!-- 设置运行参数 --> <settings> <!-- 全局映射器启用缓存 --> <setting name="cacheEnabled" value="true" /> <!-- 查询时,关闭关联对象及时加载以提高性能 --> <setting name="lazyLoadingEnabled" value="false" /> <!-- 设置关联对象加载的形态,此处为按需加载字段(加载字段由SQL指定),不会加载关联表的所有字段,以提高性能 --> <setting name="aggressiveLazyLoading" value="false" /> <!-- 对于位置的SQL查询,允许返回不同的结果集以达到通用的效果 --> <setting name="multipleResultSetsEnabled" value="true" /> <!-- 允许使用列标签代替列明 --> <setting name="useColumnLabel" value="true" /> <!-- 允许使用自定义的主键值(比如由程序生成的UUID 32位编码作为键值), 数据表的pk生成策略将被覆盖 --> <setting name="useGeneratedKeys" value="true" /> <!-- 给予被嵌套的resultMap以字段-属性的映射支持 --> <setting name="autoMappingBehavior" value="PARTIAL" /> <!-- 对于批量更新操作缓存SQL以提高性能 --> <setting name="defaultExecutorType" value="REUSE" /> <!-- 数据库超过25000秒仍未响应则超时 --> <!--<setting name="defaultStatementTimeout" value="25000" />--> <!-- 打印查询语句 --> <setting name="logImpl" value="STDOUT_LOGGING" /> <!-- 开启驼峰--> <setting name="mapUnderscoreToCamelCase" value="true" /> </settings> ``` logback配置: ```xml <?xml version="1.0" encoding="UTF-8"?> <configuration scan="true"> <!-- 属性1：每个logger都关联到logger上下文，默认上下文名称为“default”。 但可以使用设置成其他名字，用于区分不同应用程序的记录。一旦设置，不能修改,可以通过%contextName来打印日志上下文名称。 --> <contextName>logback</contextName> <!--属性2：定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径--> <!-- <springProfile name="dev"> <property name="LOG_PATH" value="D://care-management-statisticserver-logs"/> </springProfile> <springProfile name="test"> <property name="LOG_PATH" value="/data/tomcat_jar/taixin_care/care-management-statisticserver/logs"/> </springProfile> <springProfile name="prod"> <property name="LOG_PATH" value="/data1/logs/care-management-statisticserver"/> </springProfile> --> <property name="LOG_PATH" value="${LOG_FILE}"/> <!--appender用来格式化日志输出节点，有俩个属性name和class，class用来指定哪种输出策略，常用就是控制台输出策略和文件输出策略。--> <!-- %m输出的信息,%p日志级别,%t线程名,%d日期,%c类的全名,,,, --> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <filter class="ch.qos.logback.classic.filter.ThresholdFilter"> <level>info</level> </filter> <encoder> <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n</pattern> </encoder> </appender> <!--<include resource="org/springframework/boot/logging/logback/base.xml"/>--> <!-- 说明： 1、日志级别及文件 日志记录采用分级记录，级别与日志文件名相对应，不同级别的日志信息记录到不同的日志文件中 例如：error级别记录到log_error_xxx.log或log_error.log（该文件为当前记录的日志文件），而log_error_xxx.log为归档日志， 日志文件按日期记录，同一天内，若日志文件大小等于或大于2M，则按0、1、2...顺序分别命名 例如log-level-2013-12-21.0.log 其它级别的日志也是如此。 2、文件路径 若开发、测试用，在Eclipse中运行项目，则到Eclipse的安装路径查找logs文件夹，以相对路径../logs。 若部署到Tomcat下，则在Tomcat下的logs文件中 3、Appender FILEERROR对应error级别，文件名以log-error-xxx.log形式命名 FILEWARN对应warn级别，文件名以log-warn-xxx.log形式命名 FILEINFO对应info级别，文件名以log-info-xxx.log形式命名 FILEDEBUG对应debug级别，文件名以log-debug-xxx.log形式命名 CONSOLE将日志信息输出到控制上，为方便开发测试使用 --> <!-- 日志记录器，日期滚动记录 --> <appender name="FILEERROR" class="ch.qos.logback.core.rolling.RollingFileAppender"> <!-- 正在记录的日志文件的路径及文件名 --> <file>${LOG_PATH}/error_statisticserver.log</file> <!-- 日志记录器的滚动策略，按日期，按大小记录 --> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!-- 归档的日志文件的路径，例如今天是2013-12-21日志，当前写的日志文件路径为file节点指定，可以将此文件与file指定文件路径设置为不同路径，从而将当前日志文件或归档日志文件置不同的目录。 而2013-12-21的日志文件在由fileNamePattern指定。%d{yyyy-MM-dd}指定日期格式，%i指定索引 --> <fileNamePattern>${LOG_PATH}/error-statisticserver-%d{yyyy-MM-dd}.%i.log</fileNamePattern> <!-- 表示只保留最近30天的日志，以防止日志填满整个磁盘空间。--> <maxHistory>30</maxHistory> <!--用来指定日志文件的上限大小，例如设置为1GB的话，那么到了这个值，就会删除旧的日志。--> <totalSizeCap>1GB</totalSizeCap> <!-- 除按日志记录之外，还配置了日志文件不能超过2M，若超过2M，日志文件会以索引0开始， 命名日志文件，例如log-error-2013-12-21.0.log --> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> </rollingPolicy> <!-- 追加方式记录日志 --> <append>true</append> <!-- 日志文件的格式 --> <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n</pattern> <charset>utf-8</charset> </encoder> <!-- 此日志文件只记录error级别的 --> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>ERROR</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender> <!-- 日志记录器，日期滚动记录 --> <appender name="FILEINFO" class="ch.qos.logback.core.rolling.RollingFileAppender"> <!-- 正在记录的日志文件的路径及文件名 --> <file>${LOG_PATH}/info_statisticserver.log</file> <!-- 日志记录器的滚动策略，按日期，按大小记录 --> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!-- 归档的日志文件的路径，例如今天是2013-12-21日志，当前写的日志文件路径为file节点指定，可以将此文件与file指定文件路径设置为不同路径，从而将当前日志文件或归档日志文件置不同的目录。 而2013-12-21的日志文件在由fileNamePattern指定。%d{yyyy-MM-dd}指定日期格式，%i指定索引 --> <fileNamePattern>${LOG_PATH}/info-statisticserver-%d{yyyy-MM-dd}.%i.log</fileNamePattern> <!-- 表示只保留最近30天的日志，以防止日志填满整个磁盘空间。--> <maxHistory>30</maxHistory> <!--用来指定日志文件的上限大小，例如设置为1GB的话，那么到了这个值，就会删除旧的日志。--> <totalSizeCap>1GB</totalSizeCap> <!-- 除按日志记录之外，还配置了日志文件不能超过2M，若超过2M，日志文件会以索引0开始，命名日志文件，例如log-error-2013-12-21.0.log --> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> </rollingPolicy> <!-- 追加方式记录日志 --> <append>true</append> <!-- 日志文件的格式 --> <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n</pattern> <charset>utf-8</charset> </encoder> <!-- 此日志文件只记录info级别的 --> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>INFO</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender> <!-- <logger>用来设置某一个包或者具体的某一个类的日志打印级别、以及指定<appender>。<logger>仅有一个name属性，一个可选的level和一个可选的addtivity属性。 --> <logger name="org.springframework" level="INFO"/> <logger name="org.apache" level="ERROR"/> <logger name="org.hibernate.validator" level="ERROR"/> <!--<logger name="org.thymeleaf" level="ERROR"/>--> <logger name="org.springframework.context.annotation" level="ERROR"/> <!-- springProfile多环境日志输出，据不同环境（prod:生产环境，test:测试环境，dev:开发环境）来定义不同的日志输出--> <springProfile name="dev" /> <root level="INFO"> <appender-ref ref="FILEERROR"/> <appender-ref ref="FILEINFO"/> <appender-ref ref="STDOUT"/> </root> <!-- 可以启动服务的时候指定 profile （如不指定使用默认），如指定prod 的方式为： java -jar xxx.jar –spring.profiles.active=prod--> </configuration> ``` application.properties部分配置: ```properties #配置文件 logging.level.tk.mybatis=TRACE spring.freemarker.cache=false spring.freemarker.request-context-attribute=request mybatis.type-aliases-package=com.mtpf.domain mybatis.mapper-locations=classpath:mapper/*.xml mapper.mappers=com.mtpf.util.MyMapper mapper.not-empty=false mapper.identity=MYSQL pagehelper.helperDialect=mysql #true 是超出最大页码返回数据 false超出最大页码不返回数据 pagehelper.reasonable=${PAGEHELPER_REASONABLE} pagehelper.supportMethodsArguments=true pagehelper.params=count=countSql ```

tomcat可以正常启动，但是在eclipse中只启动Tomcat报错，console控制台一行乱码

在tomcat的安装目录点击startup.bat可以正常运行，也可以访问。但是在eclipse中就出现如图所示的错误!   我的server.xml <?xml version="1.0" encoding="UTF-8"?> <!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --><!-- Note: A "Server" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/server.html --><Server port="8005" shutdown="SHUTDOWN"> <Listener className="org.apache.catalina.startup.VersionLoggerListener"/> <!-- Security listener. Documentation at /docs/config/listeners.html <Listener className="org.apache.catalina.security.SecurityListener" /> --> <!--APR library loader. Documentation at /docs/apr.html --> <Listener SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/> <!-- Prevent memory leaks due to use of particular java/javax APIs--> <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/> <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/> <!-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html --> <GlobalNamingResources> <!-- Editable user database that can also be used by UserDatabaseRealm to authenticate users --> <Resource auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/> </GlobalNamingResources> <!-- A "Service" is a collection of one or more "Connectors" that share a single "Container" Note: A "Service" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/service.html --> <Service name="Catalina"> <!--The connectors can use a shared executor, you can define one or more named thread pools--> <!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" minSpareThreads="4"/> --> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL/TLS HTTP/1.1 Connector on port 8080 --> <Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/> <!-- A "Connector" using the shared thread pool--> <!-- <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> --> <!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443 This connector uses the NIO implementation. The default SSLImplementation will depend on the presence of the APR/native library and the useOpenSSL attribute of the AprLifecycleListener. Either JSSE or OpenSSL style configuration may be used regardless of the SSLImplementation selected. JSSE style configuration is used below. --> <!-- <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol" maxThreads="150" SSLEnabled="true"> <SSLHostConfig> <Certificate certificateKeystoreFile="conf/localhost-rsa.jks" type="RSA" /> </SSLHostConfig> </Connector> --> <!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443 with HTTP/2 This connector uses the APR/native implementation which always uses OpenSSL for TLS. Either JSSE or OpenSSL style configuration may be used. OpenSSL style configuration is used below. --> <!-- <Connector port="8443" protocol="org.apache.coyote.http11.Http11AprProtocol" maxThreads="150" SSLEnabled="true" > <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" /> <SSLHostConfig> <Certificate certificateKeyFile="conf/localhost-rsa-key.pem" certificateFile="conf/localhost-rsa-cert.pem" certificateChainFile="conf/localhost-rsa-chain.pem" type="RSA" /> </SSLHostConfig> </Connector> --> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443"/> <!-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html --> <!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine defaultHost="localhost" name="Catalina"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> --> <!-- Use the LockOutRealm to prevent attempts to guess user passwords via a brute-force attack --> <Realm className="org.apache.catalina.realm.LockOutRealm"> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true"> <!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Access log processes all example. Documentation at: /docs/config/valve.html Note: The pattern used is equivalent to using pattern="common" --> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="%h %l %u %t &quot;%r&quot; %s %b" prefix="localhost_access_log" suffix=".txt"/> </Host> </Engine> </Service> </Server>

spring入门程序报错，知道错误不知道如何改正？

用eclipse2019配置tomcat8.5写的spring12的入门程序报错，控制台报错如下 ``` 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server version: Apache Tomcat/8.5.43 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server built: Jul 4 2019 20:53:15 UTC 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server number: 8.5.43.0 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Name: Windows 10 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Version: 10.0 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Architecture: amd64 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Java Home: D:\Program Files\Java\jdk-12.0.2 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Version: 12.0.2+10 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Vendor: Oracle Corporation 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_BASE: D:\apache-tomcat-8.5.43 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_HOME: D:\apache-tomcat-8.5.43 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:58165 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -javaagent:D:\Users\rabbit\eclipse\java-2019-06\eclipse\configuration\org.eclipse.osgi\226\0\.cp\lib\javaagent-shaded.jar 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.base=D:\apache-tomcat-8.5.43 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.home=D:\apache-tomcat-8.5.43 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dwtp.deploy=D:\apache-tomcat-8.5.43\webapps 8月 08, 2019 5:12:29 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dfile.encoding=GBK 8月 08, 2019 5:12:29 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: An older version [1.2.14] of the APR based Apache Tomcat Native library is installed, while Tomcat recommends a minimum version of [1.2.23] 8月 08, 2019 5:12:29 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: Loaded APR based Apache Tomcat Native library [1.2.14] using APR version [1.6.2]. 8月 08, 2019 5:12:29 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. 8月 08, 2019 5:12:29 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] 8月 08, 2019 5:12:30 下午 org.apache.catalina.core.AprLifecycleListener initializeSSL 信息: OpenSSL successfully initialized [OpenSSL 1.0.2l 25 May 2017] 8月 08, 2019 5:12:30 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["http-nio-8080"] 8月 08, 2019 5:12:30 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 8月 08, 2019 5:12:30 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["ajp-nio-8009"] 8月 08, 2019 5:12:30 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 8月 08, 2019 5:12:30 下午 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 2129 ms 8月 08, 2019 5:12:30 下午 org.apache.catalina.core.StandardService startInternal 信息: Starting service [Catalina] 8月 08, 2019 5:12:30 下午 org.apache.catalina.core.StandardEngine startInternal 信息: Starting Servlet Engine: Apache Tomcat/8.5.43 8月 08, 2019 5:12:30 下午 org.apache.catalina.startup.HostConfig deployDescriptor 信息: Deploying configuration descriptor [D:\apache-tomcat-8.5.43\conf\Catalina\localhost\springmvcfirst.xml] 8月 08, 2019 5:12:30 下午 org.apache.catalina.startup.HostConfig deployDescriptor 警告: A docBase [D:\apache-tomcat-8.5.43\webapps\springmvcfirst] inside the host appBase has been specified, and will be ignored 8月 08, 2019 5:12:31 下午 org.apache.catalina.core.ApplicationContext log 信息: No Spring WebApplicationInitializer types detected on classpath 8月 08, 2019 5:12:31 下午 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring root WebApplicationContext log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. 8月 08, 2019 5:12:31 下午 org.apache.catalina.core.StandardContext listenerStart 严重: Exception sending context initialized event to listener instance of class [org.springframework.web.context.ContextLoaderListener] org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from ServletContext resource [/WEB-INF/applicationContext.xml]; nested exception is java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/applicationContext.xml] at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:341) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180) at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125) at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94) at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:131) at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4699) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5165) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:614) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1823) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:835) Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/applicationContext.xml] at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:140) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:328) ... 25 more 8月 08, 2019 5:12:31 下午 org.apache.catalina.core.StandardContext startInternal 严重: One or more listeners failed to start. Full details will be found in the appropriate container log file 8月 08, 2019 5:12:32 下午 org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom 警告: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [306] milliseconds. 8月 08, 2019 5:12:32 下午 org.apache.catalina.core.StandardContext startInternal 严重: Context [/springmvcfirst] startup failed due to previous errors 8月 08, 2019 5:12:32 下午 org.apache.catalina.core.ApplicationContext log 信息: Closing Spring root WebApplicationContext ``` 附配置文件 web.xml ``` <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>springmvcfirst</display-name> <!-- 前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- contextConfigLocation配置springmvc加载的配置文件 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/springmvc.xml</param-value> </init-param> </servlet> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app> ``` springmvc.xml ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- Handler --> <bean name="/queryItems.action" class="cn.itcast.ssm.controller.ItemsController1"/> <!-- 处理器映射器 --> <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/> <!-- 处理器适配器 --> <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/> <!-- 视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"></bean> </beans> ```

Android模拟器无法启动，提示“invalid command-line parameter”

我在Eclipse中写了一个简单的“hello world”程序，我在java文件中什么都没有加，只在main.xml 中加了text view ，像下边这样： //main.xml文件 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Hello World" /> </LinearLayout> 当我运行我的程序的时候，它在控制台显示如下边的错误： //控制台输出 [2012-09-12 07:10:22 - demo] ------------------------------ [2012-09-12 07:10:22 - demo] Android Launch! [2012-09-12 07:10:24 - demo] adb is running normally. [2012-09-12 07:10:24 - demo] Performing com.demo.DemoActivity activity launch [2012-09-12 07:10:25 - demo] Automatic Target Mode: launching new emulator with compatible AVD 'vishal' [2012-09-12 07:10:25 - demo] Launching a new emulator with Virtual Device 'vishal' [2012-09-12 07:11:06 - Emulator] invalid command-line parameter: Files\Android\android-sdk\tools/emulator-arm.exe. [2012-09-12 07:11:07 - Emulator] Hint: use '@foo' to launch a virtual device named 'foo'. [2012-09-12 07:11:07 - Emulator] please use -help for more information //--------------------------------------------------------------------------------/ 这表明，因为一些原因我的ACD无法启动，我应该怎么做才能解决这个问题？

junit测试报错，求大神救命，控制台输出如下，

0 2015-07-09 09:04:52,182 [main] INFO org.springframework.beans.factory.xml.XmlBeanDefinitionReader - #org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:316)# - Loading XML bean definitions from URL [file:WebRoot/WEB-INF/spring/applicationContext.xml] 695 2015-07-09 09:04:52,877 [main] INFO com.alibaba.dubbo.common.logger.LoggerFactory - ## - using logger: com.alibaba.dubbo.common.logger.log4j.Log4jLoggerAdapter 701 2015-07-09 09:04:52,883 [main] ERROR com.alibaba.dubbo.common.Version - #com.alibaba.dubbo.common.Version.checkDuplicate(Version.java:144)# - [DUBBO] Duplicate class com/alibaba/dubbo/common/Version.class in 3 jar [file:/D:/guyatong/shopworkspace/jpa-demo/WebRoot/WEB-INF/lib/dubbo-2.8.4.jar!/com/alibaba/dubbo/common/Version.class, file:/D:/guyatong/shopworkspace/jpa-demo/WebRoot/WEB-INF/lib/original-dubbo-2.8.4.jar!/com/alibaba/dubbo/common/Version.class, file:/D:/guyatong/shopworkspace/jpa-demo/WebRoot/WEB-INF/lib/dubbo-2.8.4-shaded.jar!/com/alibaba/dubbo/common/Version.class], dubbo version: 2.8.4, current host: 127.0.0.1 702 2015-07-09 09:04:52,884 [main] ERROR com.alibaba.dubbo.common.Version - #com.alibaba.dubbo.common.Version.checkDuplicate(Version.java:144)# - [DUBBO] Duplicate class com/alibaba/dubbo/config/spring/schema/DubboNamespaceHandler.class in 3 jar [file:/D:/guyatong/shopworkspace/jpa-demo/WebRoot/WEB-INF/lib/dubbo-2.8.4-shaded.jar!/com/alibaba/dubbo/config/spring/schema/DubboNamespaceHandler.class, file:/D:/guyatong/shopworkspace/jpa-demo/WebRoot/WEB-INF/lib/original-dubbo-2.8.4.jar!/com/alibaba/dubbo/config/spring/schema/DubboNamespaceHandler.class, file:/D:/guyatong/shopworkspace/jpa-demo/WebRoot/WEB-INF/lib/dubbo-2.8.4.jar!/com/alibaba/dubbo/config/spring/schema/DubboNamespaceHandler.class], dubbo version: 2.8.4, current host: 127.0.0.1 747 2015-07-09 09:04:52,929 [main] INFO org.springframework.context.support.GenericApplicationContext - #org.springframework.context.support.AbstractApplicationContext.prepareRefresh(AbstractApplicationContext.java:513)# - Refreshing org.springframework.context.support.GenericApplicationContext@cde55ec: startup date [Thu Jul 09 09:04:52 CST 2015]; root of context hierarchy 1043 2015-07-09 09:04:53,225 [main] INFO org.springframework.orm.jpa.LocalEntityManagerFactoryBean - #org.springframework.orm.jpa.LocalEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalEntityManagerFactoryBean.java:79)# - Building JPA EntityManagerFactory for persistence unit 'jpa-demo' [EL Info]: 2015-07-09 09:04:54.475--ServerSession(335828946)--EclipseLink, version: Eclipse Persistence Services - 2.5.0.v20130507-3faac2b [EL Severe]: ejb: 2015-07-09 09:04:56.582--ServerSession(335828946)--Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.DatabaseException Internal Exception: org.postgresql.util.PSQLException: Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. Error Code: 0 4576 2015-07-09 09:04:56,758 [main] ERROR org.springframework.test.context.TestContextManager - #org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:334)# - Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@6fcbba0c] to prepare test instance [test.TestUser@2823a32b] java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99) at org.springframework.test.context.DefaultTestContext.getApplicationContext(DefaultTestContext.java:101) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:331) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:213) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:290) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:292) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:233) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:87) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:176) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

struts2没有调用action类自定义的方法，跳转404

一直没有调用action方法，控制台无报错信息，登陆跳转404。 web.xml: ``` <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name></display-name> <welcome-file-list> <welcome-file>login.jsp</welcome-file> </welcome-file-list> <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter </filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping></web-app> ``` struts.xml: ``` <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN" "http://struts.apache.org/dtds/struts-2.5.dtd"> <struts> <constant name="struts.action.extension" value="true" /> <package name="strut2" extends="struts-default"> <action name="Login" class="loginAction.LoginAction" method="user"> <result name="usersuccess">/user.jsp</result> <result name="adminsuccess">/admin.jsp</result> <result name="fail">/fail.jsp</result> </action> </package> </struts> ``` 试过将method改为函数名称，也试过删去<constant> aciton类： ``` package loginAction; public class LoginAction { private String account; public String getAccount(){ return account; } public void setAccount(String account){ this.account=account; } private String password; public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String user()throws Exception{ System.out.print('1'); if(account.equals(password)){ System.out.println("执行user方法"); return "usersuccess"; } return "fail"; } public String admin()throws Exception{ if(account.equals(password)){ System.out.println("执行admin方法"); return "adminsuccess"; } return "fail"; } } ``` 试过删去set，get方法不行，函数没有调用（控制台无1输出） login.jsp ``` <%@ page contentType="text/html;charset=UTF-8" language="java" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> 普通用户登录： <form action = "login-user" method="post"> 请您输入账号：<input name="account" type="text"><br> 请您输入密码：<input name="password" type="password"> <input type="submit" value="登录"> </form><br> 管理员用户登录： <form action = "login-admin" method="post"> 请您输入账号：<input name="account" type="text"><br> 请您输入密码：<input name="password" type="password"> <input type="submit" value="登录"> </form> </body> </html> ``` 试过将action 改为/形式 其他三个登陆成功（失败）页面相似： ``` <%@ page contentType="text/html;charset=UTF-8" language="java" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> 普通用户登陆成功。 </body> </html> ``` 确认struts2包齐全，由myeclipse内部struts2.2.1，struts.xml也在tomcat中的class文件夹中生成

eclipse中tomcat启动成功，访问不了tomcat首页 ？

我在eclipse中的tomcat成功启动了，环境变量配置好了的，端口也没被占用，但是localhost:8080却找不到服务器，127.0.0.1:8080也是一样。（外部启动tomcat是可以访问的） 但最近发现把公用网络的防火墙关闭后，就可以访问了！这是为什么呢？ 其中server的设置为：  控制台：  tomcat的webapp中的root为：  最终网页显示：  外部启动访问成功:  server.xml: ``` <?xml version="1.0" encoding="UTF-8"?> <!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --><!-- Note: A "Server" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/server.html --><Server port="8005" shutdown="SHUTDOWN"> <Listener className="org.apache.catalina.startup.VersionLoggerListener"/> <!-- Security listener. Documentation at /docs/config/listeners.html <Listener className="org.apache.catalina.security.SecurityListener" /> --> <!--APR library loader. Documentation at /docs/apr.html --> <Listener SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/> <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html --> <Listener className="org.apache.catalina.core.JasperListener"/> <!-- Prevent memory leaks due to use of particular java/javax APIs--> <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/> <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/> <!-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html --> <GlobalNamingResources> <!-- Editable user database that can also be used by UserDatabaseRealm to authenticate users --> <Resource auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/> </GlobalNamingResources> <!-- A "Service" is a collection of one or more "Connectors" that share a single "Container" Note: A "Service" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/service.html --> <Service name="Catalina"> <!--The connectors can use a shared executor, you can define one or more named thread pools--> <!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" minSpareThreads="4"/> --> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8080 --> <Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/> <!-- A "Connector" using the shared thread pool--> <!-- <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> --> <!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the BIO implementation that requires the JSSE style configuration. When using the APR/native implementation, the OpenSSL style configuration is required as described in the APR/native documentation --> <!-- <Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol" maxThreads="150" SSLEnabled="true" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> --> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443"/> <!-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html --> <!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine defaultHost="localhost" name="Catalina"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> --> <!-- Use the LockOutRealm to prevent attempts to guess user passwords via a brute-force attack --> <Realm className="org.apache.catalina.realm.LockOutRealm"> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true"> <!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Access log processes all example. Documentation at: /docs/config/valve.html Note: The pattern used is equivalent to using pattern="common" --> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="%h %l %u %t &quot;%r&quot; %s %b" prefix="localhost_access_log." suffix=".txt"/> <Context docBase="JavaMail" path="/JavaMail" reloadable="true" source="org.eclipse.jst.jee.server:JavaMail"/></Host> </Engine> </Service> </Server> ```

spring-boot:run启动失败，请帮忙，谢谢！！！

POM配置文件： ``` <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.yss</groupId> <artifactId>springBoot</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>springBoot Maven Webapp</name> <url>http://maven.apache.org</url> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.RELEASE</version> </parent> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <!-- 设置编译环境 --> <build> <finalName>springBoot</finalName> <!--设置插件 --> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <!--设置JDK版本 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <!--設置資源文件編碼 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <configuration> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build> </project> ``` 控制台报错信息： ``` [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building springBoot Maven Webapp 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] >>> spring-boot-maven-plugin:1.5.8.RELEASE:run (default-cli) > test-compile @ springBoot >>> [WARNING] The POM for ch.qos.logback:logback-classic:jar:1.1.11 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details [WARNING] The POM for org.hibernate:hibernate-validator:jar:5.3.5.Final is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ springBoot --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory E:\workspace\eclipse\springboot\src\main\resources [INFO] skip non existing resourceDirectory E:\workspace\eclipse\springboot\src\main\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ springBoot --- [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ springBoot --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory E:\workspace\eclipse\springboot\src\test\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ springBoot --- [INFO] No sources to compile [INFO] [INFO] <<< spring-boot-maven-plugin:1.5.8.RELEASE:run (default-cli) < test-compile @ springBoot <<< [INFO] [INFO] [INFO] --- spring-boot-maven-plugin:1.5.8.RELEASE:run (default-cli) @ springBoot --- Failed to instantiate SLF4J LoggerFactory Reported exception: java.lang.NoClassDefFoundError: ch/qos/logback/core/joran/spi/JoranException at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150) at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124) at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:273) at org.springframework.boot.SpringApplication.<clinit>(SpringApplication.java:179) at com.liangsw.springboot.application.App.main(App.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:527) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.ClassNotFoundException: ch.qos.logback.core.joran.spi.JoranException at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 15 more [WARNING] java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:498) at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run (AbstractRunMojo.java:527) at java.lang.Thread.run (Thread.java:748) Caused by: java.lang.NoClassDefFoundError: ch/qos/logback/core/joran/spi/JoranException at org.slf4j.LoggerFactory.bind (LoggerFactory.java:150) at org.slf4j.LoggerFactory.performInitialization (LoggerFactory.java:124) at org.slf4j.LoggerFactory.getILoggerFactory (LoggerFactory.java:412) at org.slf4j.LoggerFactory.getLogger (LoggerFactory.java:357) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance (SLF4JLogFactory.java:155) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance (SLF4JLogFactory.java:132) at org.apache.commons.logging.LogFactory.getLog (LogFactory.java:273) at org.springframework.boot.SpringApplication.<clinit> (SpringApplication.java:179) at com.liangsw.springboot.application.App.main (App.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:498) at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run (AbstractRunMojo.java:527) at java.lang.Thread.run (Thread.java:748) Caused by: java.lang.ClassNotFoundException: ch.qos.logback.core.joran.spi.JoranException at java.net.URLClassLoader.findClass (URLClassLoader.java:381) at java.lang.ClassLoader.loadClass (ClassLoader.java:424) at java.lang.ClassLoader.loadClass (ClassLoader.java:357) at org.slf4j.LoggerFactory.bind (LoggerFactory.java:150) at org.slf4j.LoggerFactory.performInitialization (LoggerFactory.java:124) at org.slf4j.LoggerFactory.getILoggerFactory (LoggerFactory.java:412) at org.slf4j.LoggerFactory.getLogger (LoggerFactory.java:357) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance (SLF4JLogFactory.java:155) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance (SLF4JLogFactory.java:132) at org.apache.commons.logging.LogFactory.getLog (LogFactory.java:273) at org.springframework.boot.SpringApplication.<clinit> (SpringApplication.java:179) at com.liangsw.springboot.application.App.main (App.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:498) at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run (AbstractRunMojo.java:527) at java.lang.Thread.run (Thread.java:748) [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.154 s [INFO] Finished at: 2017-11-22T13:59:04+08:00 [INFO] Final Memory: 20M/307M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.5.8.RELEASE:run (default-cli) on project springBoot: An exception occurred while running. null: InvocationTargetException: ch/qos/logback/core/joran/spi/JoranException: ch.qos.logback.core.joran.spi.JoranException -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException ```

ssm配置文件突然报错，哪位大神知道哪错了？

刚创建一个项目，之前配置文件一直用的这个，运行jsp页面报错404，把这段代码注释掉就不报错了，那位大神知道哪错了怎么改？在线等 急急急！控制台报错如下： Error creating bean with name 'sqlSessionFactory' defined in file [E:\sht\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\MySht\WEB-INF\classes\springconfig\common.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:dao/*.xml]: class path resource [dao/] cannot be resolved to URL because it does not exist spring配置：<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations" value="classpath:jdbc.properties"></property> </bean> <bean id="ds" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="${driverClass}" /> <property name="jdbcUrl" value="${url}" /> <property name="user" value="${userName}" /> <property name="password" value="${passWord}" /> </bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="ds" /> </bean> <!-- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="ds" /> 自动扫描mapping.xml文件 <property name="mapperLocations" value="classpath:dao/*.xml"></property> </bean> --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> <property name="basePackage" value="dao"/> </bean> <tx:annotation-driven transaction-manager="transactionManager"/> <context:component-scan base-package="biz.impl"/> </beans> 把这行注释掉就不报错了： <!-- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="ds" /> 自动扫描mapping.xml文件 <property name="mapperLocations" value="classpath:dao/*.xml"></property> </bean> -->

Java连接SQL数据库，控制台爆出以下错误，不知道该怎么办，希望能得到各位的帮助

# # A fatal error has been detected by the Java Runtime Environment: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000005710d133, pid=11224, tid=3944 # # JRE version: Java(TM) SE Runtime Environment (8.0_66-b18) (build 1.8.0_66-b18) # Java VM: Java HotSpot(TM) 64-Bit Server VM (25.66-b18 mixed mode windows-amd64 compressed oops) # Problematic frame: # V [jvm.dll+0x13d133] # # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows # # An error report file with more information is saved as: # D:\eclipse\workplace\Dream\hs_err_pid11224.log # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp #

异常将上下文初始化事件发送到类的侦听器实例.[org.springframework.web.context.ContextLoaderListener]?

控制台： ``` 五月 10, 2019 11:34:17 下午 org.apache.catalina.core.StandardContext listenerStart 严重: 异常将上下文初始化事件发送到类的侦听器实例.[org.springframework.web.context.ContextLoaderListener] java.lang.IllegalStateException: The server encountered an internal error () that prevented it from fulfilling this request at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:288) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4682) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5150) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1377) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1367) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:902) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1377) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1367) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:902) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:423) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:932) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:633) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492) ``` 我的web.xml ``` <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- 指定spring的配置文件，默认从web根目录寻找配置文件，我们可以通过spring提供的classpath:前缀指定从类路径下寻找 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value> </context-param> <!-- 对Spring容器进行实例化 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- springmvc前端控制器，rest配置 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- contextConfigLocation配置springmvc加载的配置文件（配置处理器映射器、适配器等等） 如果不配置contextConfigLocation，默认加载的是/WEB-INF/servlet名称-serlvet.xml（springmvc-servlet.xml） --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <filter> <filter-name>CharacterFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app> ```

导入新的java项目构建错误：不可解析的父POM

 Project build error: Non-resolvable parent POM for cn.kd.exchange:exchange_api:[unknown-version]: Failure to find cn.kd.exchange:exchange_parent:pom:3.0.0 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced and 'parent.relativePath' points at wrong local POM​ Project build error: Non-resolvable parent POM for cn.kd.exchange:exchange_parent:3.0.0: Failure to transfer com.kd:kd-ssm:pom:3.0.0 from http://47.89.14.116:8081/repository/maven-public/ was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact com.kd:kd-ssm:pom:3.0.0 from/to central (http://47.89.14.116:8081/repository/maven-public/): Failed to transfer http://47.89.14.116:8081/repository/maven-public/com/kd/kd-ssm/3.0.0/kd-ssm-3.0.0.pom. Error code 500, javax.servlet.ServletException: com.orientechnologies.orient.core.exception.OJVMErrorException: JVM error 'TokenMgrError : Lexical error at line 1, column 147. Encountered: "c" (99), after : "\'%\\"' occurred during data processing, storage is switched to 'read-only' mode. To prevent this exception please restart the JVM and check data consistency by calling of 'check database' command from database console.?? DB name="component" and 'parent.relativePath' points at wrong local POM​ 项目构建错误：不可解析的父POM for cn.kd.exchange:exchange_api:[unknown-version]：未能在https：//repo.maven.apache中找到cn.kd.exchange:exchange_parent:pom:3.0.0 .ORG / maven2的是在本地仓库缓存，分辨率将不会被重新尝试，直到中央的更新间隔在错误的地方POM已过或更新被迫和“parent.relativePath”点 项目构建错误：不可解析的父POM for cn.kd.exchange:exchange_parent:3.0.0：无法从http://47.89.14.116:8081/repository传输com.kd：kd-ssm：pom：3.0.0 / maven-public /被缓存在本地存储库中，直到中央的更新间隔已过或强制更新才会重新解析。原始错误：无法传输工件com.kd：kd-ssm：pom：3.0.0 from / to central（http://47.89.14.116:8081/repository/maven-public/）：无法传输http：// 47.89.14.116:8081/repository/maven-public/com/kd/kd-ssm/3.0.0/kd-ssm-3.0.0.pom。错误代码500，javax.servlet.ServletException：com.orientechnologies.orient.core.exception.OJVMErrorException：JVM错误'TokenMgrError：第1行，第147列的词法错误。遇到：“c”（99），在“\”在数据处理过程中发生％\\“ 存储切换到“只读”模式。为防止这种异常，请重新启动JVM，并通过从数据库控制台调用“check database”命令来检查数据的一致性。 DB名称=“组件”和“parent.relativePath”点错了地方POM 导入下载的Java项目 项目构建错误：不可解析的父POM for 新手求解

Spring整合Mybatis时junit控制台报错！

Spring配置文件applicationContext_common.xml: ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd" default-autowire="byName"> <!--注解扫描 --> <context:component-scan base-package="com.liangsw"/> <!-- 配置数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/> <property name="url" value="jdbc:oracle:thin:@localhost:1521:orcl"/> <property name="username" value="userscenter"/> <property name="password" value="userscenter"/> <!-- 连接池启动时的初始值 --> <property name="initialSize" value="3" /> <!-- 连接池的最大值 --> <property name="maxActive" value="300" /> <!-- 最大空闲值. --> <property name="maxIdle" value="2" /> <!-- 最小空闲值. --> <property name="minIdle" value="1" /> </bean> <!--Mybatis配置开始 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!--mybatis配置文件加载 --> <property name="configLocation" value="classpath:mybatis.cfg.xml"/> <!--mybatis映射文件加载 --> <property name="mapperLocations" value="classpath*:config/sqlmapper/*/*Mapper.xml"/> </bean> <!--Mybatis配置结束 --> </beans> ``` Junit控制台报错信息： ``` org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in file [E:\workspace\eclipse\usersCenter\usersCenter-common\target\classes\spring\applicationContext_common.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis.cfg.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'LOG4J2 '. Cause: java.lang.ClassNotFoundException: Cannot find class: LOG4J2 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:742) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) at com.liangsw.userscenter.common.test.BaseTest.init(BaseTest.java:24) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:761) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207) Caused by: org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis.cfg.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'LOG4J2 '. Cause: java.lang.ClassNotFoundException: Cannot find class: LOG4J2 at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:500) at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:380) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ... 36 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'LOG4J2 '. Cause: java.lang.ClassNotFoundException: Cannot find class: LOG4J2 at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:121) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:99) at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:494) ... 39 more Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'LOG4J2 '. Cause: java.lang.ClassNotFoundException: Cannot find class: LOG4J2 at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118) at org.apache.ibatis.builder.xml.XMLConfigBuilder.settingsElement(XMLConfigBuilder.java:266) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:114) ... 41 more Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'LOG4J2 '. 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Docker 介绍 简单的对docker进行介绍，可以把它理解为一个应用程序执行的容器。但是docker本身和虚拟机还是有较为明显的出入的。我大致归纳了一下，可以总结为以下几点： docker自身也有着很多的优点，关于它的优点，可以总结为以下几项： 安装docker 从 2017 年 3 月开始 docker 在原来的基础上分为两个分支版本: Docker CE 和 Doc...

为啥国人偏爱Mybatis，而老外喜欢Hibernate/JPA呢？

关于SQL和ORM的争论，永远都不会终止，我也一直在思考这个问题。昨天又跟群里的小伙伴进行了一番讨论，感触还是有一些，于是就有了今天这篇文。 声明：本文不会下关于Mybatis和JPA两个持久层框架哪个更好这样的结论。只是摆事实，讲道理，所以，请各位看官勿喷。 一、事件起因 关于Mybatis和JPA孰优孰劣的问题，争论已经很多年了。一直也没有结论，毕竟每个人的喜好和习惯是大不相同的。我也看...

白话阿里巴巴Java开发手册高级篇

不久前，阿里巴巴发布了《阿里巴巴Java开发手册》，总结了阿里巴巴内部实际项目开发过程中开发人员应该遵守的研发流程规范，这些流程规范在一定程度上能够保证最终的项目交付质量，通过在时间中总结模式，并推广给广大开发人员，来避免研发人员在实践中容易犯的错误，确保最终在大规模协作的项目中达成既定目标。 无独有偶，笔者去年在公司里负责升级和制定研发流程、设计模板、设计标准、代码标准等规范，并在实际工作中进行...

SQL-小白最佳入门sql查询一

不要偷偷的查询我的个人资料，即使你再喜欢我，也不要这样，真的不好；

项目中的if else太多了，该怎么重构？

介绍 最近跟着公司的大佬开发了一款IM系统，类似QQ和微信哈，就是聊天软件。我们有一部分业务逻辑是这样的 if (msgType = "文本") { // dosomething } else if(msgType = "图片") { // doshomething } else if(msgType = "视频") { // doshomething } else { // doshom...

Nginx 原理和架构

Nginx 是一个免费的，开源的，高性能的 HTTP 服务器和反向代理，以及 IMAP / POP3 代理服务器。Nginx 以其高性能，稳定性，丰富的功能，简单的配置和低资源消耗而闻名。 Nginx 的整体架构 Nginx 里有一个 master 进程和多个 worker 进程。master 进程并不处理网络请求，主要负责调度工作进程：加载配置、启动工作进程及非停升级。worker 进程负责处...

Python 编程开发 实用经验和技巧

Python是一门很灵活的语言，也有很多实用的方法，有时候实现一个功能可以用多种方法实现，我这里总结了一些常用的方法和技巧，包括小数保留指定位小数、判断变量的数据类型、类方法@classmethod、制表符中文对齐、遍历字典、datetime.timedelta的使用等，会持续更新......

YouTube排名第一的励志英文演讲《Dream(梦想)》

Idon’t know what that dream is that you have, I don't care how disappointing it might have been as you've been working toward that dream,but that dream that you’re holding in your mind, that it’s po...

“狗屁不通文章生成器”登顶GitHub热榜，分分钟写出万字形式主义大作

一、垃圾文字生成器介绍 最近在浏览GitHub的时候，发现了这样一个骨骼清奇的雷人项目，而且热度还特别高。 项目中文名：狗屁不通文章生成器 项目英文名：BullshitGenerator 根据作者的介绍，他是偶尔需要一些中文文字用于GUI开发时测试文本渲染，因此开发了这个废话生成器。但由于生成的废话实在是太过富于哲理，所以最近已经被小伙伴们给玩坏了。 他的文风可能是这样的： 你发现，...

程序员：我终于知道post和get的区别

是一个老生常谈的话题，然而随着不断的学习，对于以前的认识有很多误区，所以还是需要不断地总结的，学而时习之，不亦说乎

《程序人生》系列-这个程序员只用了20行代码就拿了冠军

你知道的越多，你不知道的越多 点赞再看，养成习惯GitHub上已经开源https://github.com/JavaFamily，有一线大厂面试点脑图，欢迎Star和完善 前言 这一期不算《吊打面试官》系列的，所有没前言我直接开始。 絮叨 本来应该是没有这期的，看过我上期的小伙伴应该是知道的嘛，双十一比较忙嘛，要值班又要去帮忙拍摄年会的视频素材，还得搞个程序员一天的Vlog，还要写BU...

程序员把地府后台管理系统做出来了，还有3.0版本！12月7号最新消息：已在开发中有github地址

第一幕：缘起 听说阎王爷要做个生死簿后台管理系统，我们派去了一个程序员…… 996程序员做的梦： 第一场：团队招募 为了应对地府管理危机，阎王打算找“人”开发一套地府后台管理系统，于是就在地府总经办群中发了项目需求。 话说还是中国电信的信号好，地府都是满格，哈哈！！！ 经常会有外行朋友问：看某网站做的不错，功能也简单，你帮忙做一下？ 而这次，面对这样的需求，这个程序员...

网易云6亿用户音乐推荐算法

网易云音乐是音乐爱好者的集聚地，云音乐推荐系统致力于通过 AI 算法的落地，实现用户千人千面的个性化推荐，为用户带来不一样的听歌体验。 本次分享重点介绍 AI 算法在音乐推荐中的应用实践，以及在算法落地过程中遇到的挑战和解决方案。 将从如下两个部分展开： AI算法在音乐推荐中的应用 音乐场景下的 AI 思考 从 2013 年 4 月正式上线至今，网易云音乐平台持续提供着：乐屏社区、UGC...

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