JavaWeb项目打包部署之后,如果web-inf/lib下面有jar包增加/更新了,我需要重新编译吗?

问题如下,还请各位大牛为本人指点迷津,本人感恩戴德。

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JavaWeb项目打包部署之后,如果web-inf/lib下面有jar包增加/更新了,我需要重新编译吗?
还是不需要编译,直接就可以用增加/更新的jar包呢?

2个回答

编译是为了把jar包、java文件、html文件等进行汇总,顺便对java文件进行编译成class文件,如果lib目录下更新了jar包,原来的war包又不会自动把jar包放进去,所以,如果新放进去的jar包,还没java文件用到,那么可以不用重新编译,如果已经用到了,那就需要编译

如果更新的jar包在你做的东西里面有用到就要重新编译,反之不用

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<groupId>com.sun.mail</groupId> <artifactId>javax.mail</artifactId> <version>1.5.6</version> </dependency> </dependencies> <!-- 插件配置 --> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <configuration> <warName>leron</warName> <webResources> <resource> <directory>${basedir}/src/main/resources/lib</directory> <targetPath>WEB-INF/lib</targetPath> <filtering>false</filtering> <includes> <include>**/*.jar</include> </includes> </resource> </webResources> </configuration> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>utf8</encoding> </configuration> </plugin> </plugins> </build> </project> ```

Java Web开发新手请教个问题(eclipse第三方jar的正确导入方式)

比如我导入第三方jar包, 我在JSP页面用了这个包,eclipse编译倒是通过。但浏览器弹出来就显示XXX cannot be resolved to a type. 我是这样导入的:右击项目,Build Path-->Libraries-->Add External JARS,还有我把该jar包也放在项目中的WEB-INF的Lib文件下了,还是没用。 凡是用到第三方包,eclipse编译都通过,浏览器跳出来的都是XXX cannot be resolved to a type. 只要不用到第三方包,都不会出问题,我确定Tomcat没问题的。 <%page import=""%>方面确定没问题的。 ![图片说明](https://img-ask.csdn.net/upload/201603/02/1456914023_89851.png) 以上我导入了mail.jar和activation.jar包,在JSP页面写道: Session mailSession = Session.getDefaultInstance(properties); 最后eclipse编译没报错,但是浏览器却如下该结果: ![图片说明](https://img-ask.csdn.net/upload/201603/02/1456914236_797075.png)

java web 项目报这错误怎么解决呢....

java.sql.SQLException: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1078) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:975) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:920) at com.mysql.jdbc.ConnectionImpl.buildCollationMapping(ConnectionImpl.java:1074) at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:3590) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2531) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346) at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:146) at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:211) at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:140) at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:785) at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:140) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1358) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1412) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:606) 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.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1681) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1620) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:320) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1456) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1197) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:320) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107) at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:641) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:148) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1114) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1017) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1014) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:957) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:855) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)

javaweb+tomcat 启动报错

严重: The ServletContentInitializer [# Licensed to the Apache Software Foundation (ASF) under one or more] could not be created java.lang.ClassNotFoundException: # Licensed to the Apache Software Foundation (ASF) under one or more at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:344) at org.apache.catalina.startup.ContextConfig.getServletContainerInitializer(ContextConfig.java:1652) at org.apache.catalina.startup.ContextConfig.processServletContainerInitializers(ContextConfig.java:1562) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1270) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1113) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1671) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 十月 25, 2017 3:03:59 下午 org.apache.catalina.startup.ContextConfig processServletContainerInitializers 严重: Failed to process JAR found at URL [jar:file:/F:/apache-tomcat-7.0.42_empty/webapps/newWechatMarketing/WEB-INF/lib/tomcat-embed-websocket-8.5.11.jar!/] for ServletContainerInitializers for context with name [/newWechatMarketing]

在阿里云上部署java项目后,浏览器访问不了?

在阿里云上部署java项目后,用浏览器访问网页显示如下错误:![图片说明](https://img-ask.csdn.net/upload/201903/14/1552556167_258315.png) 声明: 在网上也查了许多资料: 1,有说是阿里云安全规则配置哪里没设置![图片说明](https://img-ask.csdn.net/upload/201903/14/1552556313_933513.png)![图片说明](https://img-ask.csdn.net/upload/201903/14/1552556324_255015.png)![图片说明](https://img-ask.csdn.net/upload/201903/14/1552556330_9396.png) 可是还是没用 2,然后根据网上说的看下tomcat日志: ``` Using CATALINA_BASE: /usr/java/tomcat7 Using CATALINA_HOME: /usr/java/tomcat7 Using CATALINA_TMPDIR: /usr/java/tomcat7/temp Using JRE_HOME: /usr Using CLASSPATH: /usr/java/tomcat7/bin/bootstrap.jar:/usr/java/tomcat7/bin/tomcat-juli.jar Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Server version: Apache Tomcat/7.0.93 Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Server built: Feb 16 2019 17:13:17 UTC Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Server number: 7.0.93.0 Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: OS Name: Linux Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: OS Version: 2.6.32-754.11.1.el6.x86_64 Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Architecture: amd64 Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Java Home: /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.211.x86_64/jre Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: JVM Version: 1.7.0_211-mockbuild_2019_03_11_17_56-b00 Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: JVM Vendor: Oracle Corporation Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: CATALINA_BASE: /usr/java/tomcat7 Mar 14, 2019 2:56:22 PM org.apache.catalina.startup.VersionLoggerListener log INFO: CATALINA_HOME: /usr/java/tomcat7 Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Command line argument: -Djava.util.logging.config.file=/usr/java/tomcat7/conf/logging.properties Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Command line argument: -Djdk.tls.ephemeralDHKeySize=2048 Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Command line argument: -Dignore.endorsed.dirs= Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Command line argument: -Dcatalina.base=/usr/java/tomcat7 Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Command line argument: -Dcatalina.home=/usr/java/tomcat7 Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.VersionLoggerListener log INFO: Command line argument: -Djava.io.tmpdir=/usr/java/tomcat7/temp Mar 14, 2019 2:56:23 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib Mar 14, 2019 2:56:23 PM org.apache.coyote.AbstractProtocol init INFO: Initializing ProtocolHandler ["http-bio-8080"] Mar 14, 2019 2:56:23 PM org.apache.coyote.AbstractProtocol init SEVERE: Failed to initialize end point associated with ProtocolHandler ["http-bio-8080"] java.net.BindException: Address already in use (Bind failed) <null>:8080 at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:414) at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:728) at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:452) at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:119) at org.apache.catalina.connector.Connector.initInternal(Connector.java:978) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.core.StandardService.initInternal(StandardService.java:560) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:840) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.startup.Catalina.load(Catalina.java:660) at org.apache.catalina.startup.Catalina.load(Catalina.java:685) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:253) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:427) Caused by: java.net.BindException: Address already in use (Bind failed) at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) at java.net.ServerSocket.bind(ServerSocket.java:375) at java.net.ServerSocket.<init>(ServerSocket.java:237) at java.net.ServerSocket.<init>(ServerSocket.java:181) at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49) at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:401) ... 17 more Mar 14, 2019 2:56:23 PM org.apache.catalina.core.StandardService initInternal SEVERE: Failed to initialize connector [Connector[HTTP/1.1-8080]] org.apache.catalina.LifecycleException: Failed to initialize component [Connector[HTTP/1.1-8080]] at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107) at org.apache.catalina.core.StandardService.initInternal(StandardService.java:560) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:840) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.startup.Catalina.load(Catalina.java:660) at org.apache.catalina.startup.Catalina.load(Catalina.java:685) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:253) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:427) Caused by: org.apache.catalina.LifecycleException: Protocol handler initialization failed at org.apache.catalina.connector.Connector.initInternal(Connector.java:980) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) ... 12 more Caused by: java.net.BindException: Address already in use (Bind failed) <null>:8080 at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:414) at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:728) at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:452) at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:119) at org.apache.catalina.connector.Connector.initInternal(Connector.java:978) ... 13 more Caused by: java.net.BindException: Address already in use (Bind failed) at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) at java.net.ServerSocket.bind(ServerSocket.java:375) at java.net.ServerSocket.<init>(ServerSocket.java:237) at java.net.ServerSocket.<init>(ServerSocket.java:181) at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49) at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:401) ... 17 more Mar 14, 2019 2:56:23 PM org.apache.coyote.AbstractProtocol init INFO: Initializing ProtocolHandler ["ajp-bio-8009"] Mar 14, 2019 2:56:23 PM org.apache.coyote.AbstractProtocol init SEVERE: Failed to initialize end point associated with ProtocolHandler ["ajp-bio-8009"] java.net.BindException: Address already in use (Bind failed) <null>:8009 at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:414) at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:728) at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:452) at org.apache.catalina.connector.Connector.initInternal(Connector.java:978) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.core.StandardService.initInternal(StandardService.java:560) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:840) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.startup.Catalina.load(Catalina.java:660) at org.apache.catalina.startup.Catalina.load(Catalina.java:685) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:253) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:427) Caused by: java.net.BindException: Address already in use (Bind failed) at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) at java.net.ServerSocket.bind(ServerSocket.java:375) at java.net.ServerSocket.<init>(ServerSocket.java:237) at java.net.ServerSocket.<init>(ServerSocket.java:181) at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49) at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:401) ... 16 more Mar 14, 2019 2:56:23 PM org.apache.catalina.core.StandardService initInternal SEVERE: Failed to initialize connector [Connector[AJP/1.3-8009]] org.apache.catalina.LifecycleException: Failed to initialize component [Connector[AJP/1.3-8009]] at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107) at org.apache.catalina.core.StandardService.initInternal(StandardService.java:560) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:840) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) at org.apache.catalina.startup.Catalina.load(Catalina.java:660) at org.apache.catalina.startup.Catalina.load(Catalina.java:685) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:253) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:427) Caused by: org.apache.catalina.LifecycleException: Protocol handler initialization failed at org.apache.catalina.connector.Connector.initInternal(Connector.java:980) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) ... 12 more Caused by: java.net.BindException: Address already in use (Bind failed) <null>:8009 at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:414) at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:728) at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:452) at org.apache.catalina.connector.Connector.initInternal(Connector.java:978) ... 13 more Caused by: java.net.BindException: Address already in use (Bind failed) at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) at java.net.ServerSocket.bind(ServerSocket.java:375) at java.net.ServerSocket.<init>(ServerSocket.java:237) at java.net.ServerSocket.<init>(ServerSocket.java:181) at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49) at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:401) ... 16 more Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 1420 ms Mar 14, 2019 2:56:23 PM org.apache.catalina.core.StandardService startInternal INFO: Starting service Catalina Mar 14, 2019 2:56:23 PM org.apache.catalina.core.StandardEngine startInternal INFO: Starting Servlet Engine: Apache Tomcat/7.0.93 Mar 14, 2019 2:56:23 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive /usr/java/tomcat7/webapps/survey.war Mar 14, 2019 2:56:23 PM org.apache.catalina.loader.WebappClassLoaderBase validateJarFile INFO: validateJarFile(/usr/java/tomcat7/webapps/survey/WEB-INF/lib/servlet-api.jar) - jar not loaded. See Servlet Spec 3.0, section 10.7.2. Offending class: javax/servlet/Servlet.class Mar 14, 2019 2:56:24 PM org.apache.catalina.deploy.WebXml setVersion WARNING: Unknown version string [3.1]. Default version will be used. Mar 14, 2019 2:56:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/core is already defined Mar 14, 2019 2:56:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/fmt is already defined Mar 14, 2019 2:56:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/sql is already defined Mar 14, 2019 2:56:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/xml is already defined Mar 14, 2019 2:56:26 PM org.apache.catalina.startup.TldConfig execute INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Parsing configuration file [struts-default.xml] Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Unable to locate configuration files of the name struts-plugin.xml, skipping Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Parsing configuration file [struts-plugin.xml] Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Parsing configuration file [struts.xml] Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.ObjectFactory) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.FileManager) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.impl.XWorkConverter) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.TextProvider) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.ActionProxyFactory) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.conversion.ObjectTypeDeterminer) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (org.apache.struts2.dispatcher.mapper.ActionMapper) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (jakarta) for (org.apache.struts2.dispatcher.multipart.MultiPartRequest) Mar 14, 2019 2:56:26 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (org.apache.struts2.views.freemarker.FreemarkerManager) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (org.apache.struts2.components.UrlRenderer) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.validator.ActionValidatorManager) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.ValueStackFactory) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.reflection.ReflectionProvider) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.reflection.ReflectionContextFactory) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.util.PatternMatcher) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (org.apache.struts2.dispatcher.StaticContentLoader) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (com.opensymphony.xwork2.UnknownHandlerManager) Mar 14, 2019 2:56:27 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger info INFO: Choosing bean (struts) for (org.apache.struts2.views.util.UrlHelper) Mar 14, 2019 2:56:27 PM org.apache.catalina.core.StandardContext startInternal SEVERE: One or more Filters failed to start. Full details will be found in the appropriate container log file Mar 14, 2019 2:56:27 PM org.apache.catalina.core.StandardContext startInternal SEVERE: Context [/survey] startup failed due to previous errors Mar 14, 2019 2:56:27 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deployment of web application archive /usr/java/tomcat7/webapps/survey.war has finished in 3,963 ms Mar 14, 2019 2:56:27 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 4088 ms Mar 14, 2019 2:56:27 PM org.apache.catalina.core.StandardServer await SEVERE: StandardServer.await: create[localhost:8005]: java.net.BindException: Address already in use (Bind failed) at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) at java.net.ServerSocket.bind(ServerSocket.java:375) at java.net.ServerSocket.<init>(ServerSocket.java:237) at org.apache.catalina.core.StandardServer.await(StandardServer.java:444) at org.apache.catalina.startup.Catalina.await(Catalina.java:799) at org.apache.catalina.startup.Catalina.start(Catalina.java:745) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428) Mar 14, 2019 2:56:27 PM org.apache.coyote.AbstractProtocol pause INFO: Pausing ProtocolHandler ["http-bio-8080"] Mar 14, 2019 2:56:27 PM org.apache.coyote.AbstractProtocol pause INFO: Pausing ProtocolHandler ["ajp-bio-8009"] Mar 14, 2019 2:56:27 PM org.apache.catalina.core.StandardService stopInternal INFO: Stopping service Catalina Mar 14, 2019 2:56:27 PM org.apache.coyote.AbstractProtocol stop INFO: Stopping ProtocolHandler ["http-bio-8080"] Mar 14, 2019 2:56:27 PM org.apache.coyote.AbstractProtocol destroy INFO: Destroying ProtocolHandler ["http-bio-8080"] Mar 14, 2019 2:56:27 PM org.apache.coyote.AbstractProtocol stop INFO: Stopping ProtocolHandler ["ajp-bio-8009"] Mar 14, 2019 2:56:27 PM org.apache.coyote.AbstractProtocol destroy INFO: Destroying ProtocolHandler ["ajp-bio-8009"] ``` 看了下是说tomcat端口占用? 杀掉tomcat后还是没作用 求各位大佬帮个帮忙 谢谢

这种错怎么解决突然报的404 导入之前的项目或者都复制过来都不报错 新建一个jsp页面就报404

7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server.服务器版本: Apache Tomcat/9.0.19 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server.构建: Apr 12 2019 14:22:48 UTC 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server version number: 9.0.19.0 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Name: Windows 10 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS.版本: 10.0 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: 结.造: amd64 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Java 环境变量: C:\Program Files\Java\jre-9.0.4 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM 版本: 9.0.4+11 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM.供应商: Oracle Corporation 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_BASE: E:\mybatis\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_HOME: E:\mytomcat\apache-tomcat-9.0.19 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.base=E:\mybatis\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.home=E:\mytomcat\apache-tomcat-9.0.19 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dwtp.deploy=E:\mybatis\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps 7月 24, 2019 9:10:26 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dfile.encoding=UTF-8 7月 24, 2019 9:10:26 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]. 7月 24, 2019 9:10:26 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. 7月 24, 2019 9:10:26 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] 7月 24, 2019 9:10:26 下午 org.apache.catalina.core.AprLifecycleListener initializeSSL 信息: OpenSSL successfully initialized [OpenSSL 1.1.1a 20 Nov 2018] 7月 24, 2019 9:10:26 下午 org.apache.coyote.AbstractProtocol init 信息: 初始化协议处理器 ["http-nio-8080"] 7月 24, 2019 9:10:27 下午 org.apache.coyote.AbstractProtocol init 信息: 初始化协议处理器 ["ajp-nio-8009"] 7月 24, 2019 9:10:27 下午 org.apache.catalina.startup.Catalina load 信息: 服务器在[1,274]毫秒内初始化 7月 24, 2019 9:10:27 下午 org.apache.catalina.core.StandardService startInternal 信息: Starting service [Catalina] 7月 24, 2019 9:10:27 下午 org.apache.catalina.core.StandardEngine startInternal 信息: Starting Servlet engine: [Apache Tomcat/9.0.19] 7月 24, 2019 9:10:27 下午 org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom 警告: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [171] milliseconds. 7月 24, 2019 9:10:32 下午 org.apache.catalina.core.ApplicationContext log 信息: No Spring WebApplicationInitializer types detected on classpath 7月 24, 2019 9:10:33 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。 7月 24, 2019 9:10:33 下午 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring root WebApplicationContext 7月 24, 2019 9:13:04 下午 org.apache.ibatis.mapping.VendorDatabaseIdProvider getDatabaseId 严重: Could not get a databaseId from dataSource java.sql.SQLException: Connections could not be acquired from the underlying database! at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529) at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128) at org.apache.ibatis.mapping.VendorDatabaseIdProvider.getDatabaseProductName(VendorDatabaseIdProvider.java:76) at org.apache.ibatis.mapping.VendorDatabaseIdProvider.getDatabaseName(VendorDatabaseIdProvider.java:61) at org.apache.ibatis.mapping.VendorDatabaseIdProvider.getDatabaseId(VendorDatabaseIdProvider.java:49) at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:395) at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:295) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4682) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5150) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1377) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1367) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:902) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1377) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1367) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(Unknown Source) 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 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492) Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source. at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319) at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557) at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525) ... 50 more WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by org.apache.ibatis.reflection.Reflector (file:/E:/mybatis/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/aa/WEB-INF/lib/mybatis-3.2.2.jar) to method java.lang.Object.finalize() WARNING: Please consider reporting this to the maintainers of org.apache.ibatis.reflection.Reflector WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release 7月 24, 2019 9:13:05 下午 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring FrameworkServlet 'springmvc' 7月 24, 2019 9:13:06 下午 org.apache.coyote.AbstractProtocol start 信息: 开始协议处理句柄["http-nio-8080"] 7月 24, 2019 9:13:06 下午 org.apache.coyote.AbstractProtocol start 信息: 开始协议处理句柄["ajp-nio-8009"] 7月 24, 2019 9:13:06 下午 org.apache.catalina.startup.Catalina start 信息: Server startup in [159,538] milliseconds web配置文件 <?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>SpringMybatisOa</display-name> <!-- dwr --> <servlet> <servlet-name>dwr_invoker</servlet-name> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class> <init-param> <param-name>crossDomainSessionSecurity</param-name> <param-value>false</param-value> </init-param> <init-param> <param-name>debug</param-name> <param-value>true</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>dwr_invoker</servlet-name> <url-pattern>/dwre/*</url-pattern> </servlet-mapping> <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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springconfig/*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</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:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <mvc:annotation-driven/><!-- 启动注解方式的mvc --> <context:component-scan base-package="action"/><!-- 扫描该包下所有类加载到容器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/"/> <property name="suffix" value=".jsp"/> </bean> </beans> 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> 在线等 急!!!

java web 数据库驱动加载问题!求助!

这段代码总是抛出异常,意思大概是加载数据库驱动时异常,我只复制了第一句 java.lang.ClassNotFoundException: com.MYSQL.jdbc.Driver 我百度后,网上说是导包的问题 在web工程下要把数据驱动包放到WebContent\WEB-INF\lib目录下 我放进去后,并且web工程右键build path 选择了这个jar包 然后把jsp文件run on server后出现的异常 包头需要倒入java什么包呢,我导入了 .lang.*,.util.*,.sql.*, 怎么弄都不行,求大神帮助! ``` try{ Class.forName("com.MYSQL.jdbc.Driver"); } catch (ClassNotFoundException e){ System.out.println("加载数据库驱动时异常!"); e.printStackTrace(); } Connection con = null; con = DriverManager.getConnection("jdbc:MYSQL://localhost:3306/RJGC","root","root"); Statement stat = con.createStatement(); ResultSet res = stat.executeQuery("select * from zhsj"); ```

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