Eclipse配置Tomcat完成后，启动tomcat报错，求解

之前一直用的是MyEclipse，对Eclipse不熟悉，今天在Eclipse配置Tomcat的时候出现各种问题： 1、tomcat最后配成了，启动却报错了，不知什么原因，求解！ 2、Eclipse中还是没有Server的！！！怎么配置呢？网上关于这个比较少，求大神指导 （其中，Eclipse是3.5.2标准版，tomcat 是7.0版本，对应的tomcat关联插件是3.2.1版本， jdk是1.6版本） 下面是具体报错的信息： Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory at org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:49) Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 1 more

tomcat启动报错，求解

tomcat启动报错，但不影响程序运行 Exception loading sessions from persistent storage java.lang.ClassCastException: java.lang.String cannot be cast to java.io.ObjectStreamClass

Springboot 用外置Tomcat启动报错

用Springboot的方式启动不报错 但现在要求外置Tomcat启动 报如下错误 求解求解 ``` 31-Dec-2019 17:21:01.956 严重 [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/jrm]] at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) 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:705) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:970) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1841) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.socket.server.standard.ServletServerContainerFactoryBean#0' defined in file [D:\apache-tomcat-8.5.49\webapps\jrm\WEB-INF\classes\spring\spring-websocket.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: A ServletContext is required to access the javax.websocket.server.ServerContainer instance at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:741) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388) at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:155) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:135) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:87) at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5154) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ... 10 more Caused by: java.lang.IllegalStateException: A ServletContext is required to access the javax.websocket.server.ServerContainer instance at org.springframework.util.Assert.state(Assert.java:73) at org.springframework.web.socket.server.standard.ServletServerContainerFactoryBean.afterPropertiesSet(ServletServerContainerFactoryBean.java:99) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706) ... 29 more 31-Dec-2019 17:21:01.958 严重 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR 部署 Web 应用程序 archive [D:\apache-tomcat-8.5.49\webapps\jrm.war] 时出错 java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/jrm]] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:747) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:970) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1841) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) ```

web项目可以正常启动，但是打成war包放到tomcat中启动就报错？？？

用servlet写了一个小型项目，简单的实现了几个功能，没有使用任何框架，但是在maven中引入了spring依赖，因为用JDBCTemplate访问的数据库。 问题：项目写完后正常启动，但是打成war包放到Tomcat中启动就报错。错误信息显示：Cound not open ServletContext resource[\]; 个人见解：我没有使用框架，不需要配置web.xml,但是它启动就要访问web.xml，所以现在比较尴尬，不知道这个web.xml该怎么配。 求解：

springboot项目在tomcat启动报错，求解

2017/12/28-21:18:13 [localhost-startStop-1] INFO org.springframework.context.support.DefaultLifecycleProcessor- Starting beans in phase 2147483647 2017/12/28-21:18:13 [localhost-startStop-1] INFO com.ch.tri.SpringBootStartApplication- Started SpringBootStartApplication in 6.201 seconds (JVM running for 9.985) 28-Dec-2017 21:18:13.166 严重 [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file 28-Dec-2017 21:18:13.173 严重 [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal Context [/WebIThings-0.0.1-SNAPSHOT] startup failed due to previous errors 2017/12/28-21:18:13 [localhost-startStop-1] INFO org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext- Closing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@221ff7bd: startup date [Thu Dec 28 21:18:07 CST 2017]; root of context hierarchy 2017/12/28-21:18:13 [localhost-startStop-1] INFO org.springframework.context.support.DefaultLifecycleProcessor- Stopping beans in phase 2147483647 2017/12/28-21:18:13 [localhost-startStop-1] INFO org.springframework.context.support.DefaultLifecycleProcessor- Stopping beans in phase 1073741823 2017/12/28-21:18:13 [localhost-startStop-1] INFO org.springframework.integration.mqtt.inbound.MqttPahoMessageDrivenChannelAdapter- stopped inbound 2017/12/28-21:18:13 [localhost-startStop-1] INFO org.springframework.context.support.DefaultLifecycleProcessor- Stopping beans in phase 0

ssm项目部署tomcat问题

自己建立了spring+springmvc+mybatis整合的小项目，用的是maven。目录如下图 maven--update project 操作后就能正常启动tomcat，但是会报java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener，查了百度，说是tomcat下的项目没有lib，然后照着操作，properties-->add maven dependencies ，操作完查看tomcat下的项目web—Inf下有lib，但是启动tomcat又报错。报错如图。然后我试着又maven ---> update project ，启动没问题，但是tomcat下的项目目录又没了lib包。 至今找不到问题，求解？另外为什么能tomcat启动了，然后我locatlhost：8080/TestProject/index.jsp 报了404 。无从下手，小白求指导

tomcat启动闪退 jdk出错 求大神帮帮忙！

我买的阿里云服务器 jdk tomcat MySQL 配置好后taomcat启动闪退，百度了下说我jdk配置错了 我仔细看了没有配置错 重启阿里云服务器 cmd输入javac 一切正常 然后我在启动tomcat闪退 以后我在去cmd输入Javac 就报错了 贴上报错信息 求解为什么

【JAVA】tomcat启动项目报错，求解

完全看不懂，求解 ``` 警告: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [155] milliseconds. 十一月 21, 2018 4:29:44 下午 org.apache.catalina.core.StandardContext resourcesStart 严重: Error starting static Resources java.lang.IllegalArgumentException: Document base C:\Users\user\jamie\eclipse-workspace-stbflsc\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\back-product-web does not exist or is not a readable directory at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:136) at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:5286) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5477) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1707) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1697) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) 十一月 21, 2018 4:29:44 下午 org.apache.catalina.core.ContainerBase startInternal 严重: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/back-product-web2]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1243) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1707) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1697) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/back-product-web2]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) ... 6 more Caused by: org.apache.catalina.LifecycleException: Error in resourceStart() at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5478) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 6 more 十一月 21, 2018 4:29:44 下午 org.apache.catalina.core.ContainerBase startInternal 严重: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1243) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:444) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:758) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.startup.Catalina.start(Catalina.java:710) 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:294) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1707) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1697) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1254) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 6 more Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/back-product-web2]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1243) ... 8 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/back-product-web2]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) ... 6 more Caused by: org.apache.catalina.LifecycleException: Error in resourceStart() at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5478) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 6 more 十一月 21, 2018 4:29:44 下午 org.apache.catalina.startup.Catalina start 严重: The required Server component failed to start so Tomcat is unable to start. org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.startup.Catalina.start(Catalina.java:710) 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:294) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:758) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 7 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:444) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 9 more Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1254) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 11 more Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1243) ... 13 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1707) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1697) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1254) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 6 more Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/back-product-web2]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1243) ... 8 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/back-product-web2]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) ... 6 more Caused by: org.apache.catalina.LifecycleException: Error in resourceStart() at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5478) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 6 more 十一月 21, 2018 4:29:44 下午 org.apache.coyote.AbstractProtocol pause 信息: Pausing ProtocolHandler ["http-bio-8080"] 十一月 21, 2018 4:29:44 下午 org.apache.coyote.AbstractProtocol pause 信息: Pausing ProtocolHandler ["ajp-bio-8009"] 十一月 21, 2018 4:29:44 下午 org.apache.catalina.core.StandardService stopInternal 信息: Stopping service Catalina 十一月 21, 2018 4:29:44 下午 org.apache.coyote.AbstractProtocol destroy 信息: Destroying ProtocolHandler ["http-bio-8080"] 十一月 21, 2018 4:29:44 下午 org.apache.coyote.AbstractProtocol destroy 信息: Destroying ProtocolHandler ["ajp-bio-8009"] ```

gateway启动报错 应该是依赖冲突的问题 求解

gateway启动报错 No qualifying bean of type 'org.springframework.http.codec.ServerCodecConfigurer' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {} spring-boot-starter-web和gateway冲突已经去掉了 父pom也检查过了还是不行。 下面是pom文件 gateway的pom ``` <?xml version="1.0" encoding="UTF-8"?> <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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.zc</groupId> <artifactId>ZC-Z-Server-Gateway</artifactId> <version>1.0.0</version> <name>ZC-Z-Server-Gateway</name> <description>网关服务</description> <properties> <java.version>1.8</java.version> <spring.security.oauth2.autoconfigure>2.1.3.RELEASE</spring.security.oauth2.autoconfigure> <spring-cloud.version>Greenwich.SR1</spring-cloud.version> <!--<alibaba.fastjson>1.2.56</alibaba.fastjson>--> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-gateway</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-webflux</artifactId> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.security/spring-security-core --> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-core</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>com.zc</groupId> <artifactId>ZC-Common</artifactId> <version>1.0.0</version> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </exclusion> <exclusion> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> ``` common的pom ``` <?xml version="1.0" encoding="UTF-8"?> <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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.zc</groupId> <artifactId>ZC-Common</artifactId> <version>1.0.0</version> <name>ZC-Common</name> <description>公共应用模块</description> <packaging>jar</packaging> <properties> <java.version>1.8</java.version> <mybatis.plus.boot>3.0.7.1</mybatis.plus.boot> <alibaba.fastjson>1.2.56</alibaba.fastjson> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <spring.security.oauth2.autoconfigure>2.1.3.RELEASE</spring.security.oauth2.autoconfigure> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-redis --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> <version>2.1.3.RELEASE</version> </dependency> <dependency> <groupId>com.zc</groupId> <artifactId>ZC-Entity</artifactId> <version>1.0.0</version> <exclusions> <exclusion> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <!--<dependency>--> <!--<groupId>org.springframework.boot</groupId>--> <!--<artifactId>spring-boot-starter-data-redis</artifactId>--> <!--</dependency>--> <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter --> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>${mybatis.plus.boot}</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>${alibaba.fastjson}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/io.jsonwebtoken/jjwt --> <dependency> <groupId>io.jsonwebtoken</groupId> <artifactId>jjwt</artifactId> <version>0.9.1</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.security.oauth.boot/spring-security-oauth2-autoconfigure --> <dependency> <groupId>org.springframework.security.oauth.boot</groupId> <artifactId>spring-security-oauth2-autoconfigure</artifactId> <version>${spring.security.oauth2.autoconfigure}</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> </dependencies> <!--统一插件配置版本管理 TODO--> <build> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <!--指定编译时的jdk版本--> <configuration> <source>${java.version}</source> <target>${java.version}</target> </configuration> </plugin> </plugins> </build> </project> ``` entity的pom ``` <?xml version="1.0" encoding="UTF-8"?> <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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.zc</groupId> <artifactId>ZC-Entity</artifactId> <version>1.0.0</version> <name>ZC-Entity</name> <description>实体类</description> <packaging>jar</packaging> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> </properties> <dependencies> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus</artifactId> <version>3.0.7.1</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.validation/validation-api --> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>2.0.1.Final</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.23</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.9.0</version> <scope>compile</scope> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.2</version> </dependency> </dependencies> <!--统一插件配置版本管理 TODO--> <build> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <!--指定编译时的jdk版本--> <configuration> <source>${java.version}</source> <target>${java.version}</target> </configuration> </plugin> </plugins> </build> </project> ```

Tomcat6启动时 mysql报错？求解

<pre name="code" class="xml">2012-10-30 15:04:00 Commons Daemon procrun stdout initialized 15:04:17,546 WARN JDBCExceptionReporter:77 - SQL Error: 0, SQLState: null 15:04:17,562 ERROR JDBCExceptionReporter:78 - Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YES)) 15:04:17,562 WARN SettingsFactory:117 - Could not obtain connection metadata org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YES)) at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1225) at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880) at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81) at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:84) at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:805) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:745) at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:134) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1143) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1110) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:431) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:254) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:144) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:251) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:163) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:281) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:241) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardHost.start(StandardHost.java:840) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) 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.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Caused by: java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:917) at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3974) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1282) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142) at com.mysql.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:773) at com.mysql.jdbc.JDBC4Connection.&lt;init&gt;(JDBC4Connection.java:46) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282) at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38) at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:294) at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1247) at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1221) ... 35 more </pre> <p> </p>

----MyEclipse关联Tomcat报错 --

Plug-in "com.genuitec.eclipse.ast.deploy.core" was unable to instantiate class "com.genuitec.eclipse.ast.deploy.core.ui.ServerView". MyEclipse 关联Tomcat启动本来OK的，因为电脑上配置了 tomcat7w.exe 启动，后来MyEclipse中怎么都不能关联Tomcat了......求解....  

Tomcat项目部署成功，但是启动时项目没有启动，也没有报错，仍然跑空猫

  一张是运行情况的图，一张是tomcat配置的图，把项目加载到tomcat中了，但是始终跑的是空猫，0.5秒tomcat就运行好了，访问项目就是404。。。求解啊，该怎么解决这个问题呢

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Sring mvc +mybatis部署tomcat导致tomcat启动假死

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springboot 项目在本地启动正常，maven打包运行包如下错误，在项目中去掉 @KafkaListener注解打包运行不会报错，怀疑是jar依赖的问题，求解！

[2019-11-25 14:53:48.299][main][KEY:] INFO- Stopping service [Tomcat] -[org.apache.juli.logging.DirectJDKLog:log] [DirectJDKLog.java:180] [2019-11-25 14:53:48.499][localhost-startStop-2][KEY:] WARN- The web application [ROOT] appears to have started a thread named [logback-1] but ha s failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.base@11.0.3/jdk.internal.misc.Unsafe.park(Native Method) java.base@11.0.3/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234) java.base@11.0.3/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) java.base@11.0.3/java.lang.Thread.run(Thread.java:834) -[org.apache.juli.logging.DirectJDKLog:log] [DirectJDKLog.java:180] [2019-11-25 14:53:48.503][localhost-startStop-2][KEY:] WARN- The web application [ROOT] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.base@11.0.3/java.lang.Object.wait(Native Method) java.base@11.0.3/java.util.TimerThread.mainLoop(Timer.java:553) java.base@11.0.3/java.util.TimerThread.run(Timer.java:506) -[org.apache.juli.logging.DirectJDKLog:log] [DirectJDKLog.java:180] [2019-11-25 14:53:48.504][localhost-startStop-2][KEY:] WARN- The web application [ROOT] appears to have started a thread named [com.alibaba.nacos .naming.client.listener] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.base@11.0.3/jdk.internal.misc.Unsafe.park(Native Method) java.base@11.0.3/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234) java.base@11.0.3/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123) java.base@11.0.3/java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:458) com.alibaba.nacos.client.naming.core.EventDispatcher$Notifier.run(EventDispatcher.java:114) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) java.base@11.0.3/java.lang.Thread.run(Thread.java:834) -[org.apache.juli.logging.DirectJDKLog:log] [DirectJDKLog.java:180] [2019-11-25 14:53:48.508][localhost-startStop-2][KEY:] WARN- The web application [ROOT] appears to have started a thread named [com.alibaba.nacos .naming.beat.sender] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.base@11.0.3/jdk.internal.misc.Unsafe.park(Native Method) java.base@11.0.3/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234) java.base@11.0.3/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) java.base@11.0.3/java.lang.Thread.run(Thread.java:834) -[org.apache.juli.logging.DirectJDKLog:log] [DirectJDKLog.java:180] [2019-11-25 14:53:48.514][localhost-startStop-2][KEY:] WARN- The web application [ROOT] appears to have started a thread named [com.alibaba.nacos .naming.beat.sender] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.base@11.0.3/jdk.internal.misc.Unsafe.park(Native Method) java.base@11.0.3/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194) java.base@11.0.3/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2081) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) java.base@11.0.3/java.lang.Thread.run(Thread.java:834) -[org.apache.juli.logging.DirectJDKLog:log] [DirectJDKLog.java:180] [2019-11-25 14:53:48.525][localhost-startStop-2][KEY:] WARN- The web application [ROOT] appears to have started a thread named [com.alibaba.nacos .naming.failover] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.base@11.0.3/jdk.internal.misc.Unsafe.park(Native Method) java.base@11.0.3/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234) java.base@11.0.3/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) java.base@11.0.3/java.lang.Thread.run(Thread.java:834) -[org.apache.juli.logging.DirectJDKLog:log] [DirectJDKLog.java:180] [2019-11-25 14:53:48.531][localhost-startStop-2][KEY:] WARN- The web application [ROOT] appears to have started a thread named [com.alibaba.nacos .naming.push.receiver] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.base@11.0.3/java.net.DualStackPlainDatagramSocketImpl.socketReceiveOrPeekData(Native Method) java.base@11.0.3/java.net.DualStackPlainDatagramSocketImpl.receive0(DualStackPlainDatagramSocketImpl.java:124) java.base@11.0.3/java.net.AbstractPlainDatagramSocketImpl.receive(AbstractPlainDatagramSocketImpl.java:181) java.base@11.0.3/java.net.DatagramSocket.receive(DatagramSocket.java:814) java.base@11.0.3/java.net.AbstractPlainDatagramSocketImpl.receive(AbstractPlainDatagramSocketImpl.j java.base@11.0.3/java.net.DatagramSocket.receive(DatagramSocket.java:814) com.alibaba.nacos.client.naming.core.PushReceiver.run(PushReceiver.java:73) java.base@11.0.3/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) java.base@11.0.3/java.util.concurrent.FutureTask.run(FutureTask.java:264) java.base@11.0.3/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Scheduled java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) java.base@11.0.3/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) java.base@11.0.3/java.lang.Thread.run(Thread.java:834) -[org.apache.juli.logging.DirectJDKLog:log]

部署servlet后，启动tomcat失败

写了一个简单的servlet，部署到tomcat，在cmd中直接启动遇到报错，以下贴上三条我觉得可能比较重要的提示信息，求解，谢谢！ 27-Feb-2016 22:25:10.849 SEVERE [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]] -------------------------------------------------------------------- Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping ------------------------------------------------------------------------- 27-Feb-2016 22:25:10.852 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Error deploying web application directory C:\javawork\testservlet\apache-tomcat-8.0.30-windows-x64\apache-tomcat-8.0.30\webapps\ROOT java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]] --------------------------------------------- 另外，下面是我的web.xml文件配置： <servlet> <servlet-name>UseServlet</servlet-name> <servlet-class>UseServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>UseServlet</servlet-name> <servlet-pattern>/UseServlet</servlet-pattern> </servlet-mapping>

JMX 连接器服务器通信错误

本地启动服务，就报错； 错误: JMX 连接器服务器通信错误: service:jmx:rmi://SKY-20170526VUG 求大神指导，有说是windown的问题，杀毒软件的额问题，，重启了不行，360卸载了，不行，tomcat重新从官网下载的，不行，求解

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严重: Exception sending context initialized event to listener instance of class org.springframework.web.util.Log4jConfigListener java.lang.IllegalArgumentException: Invalid 'log4jConfigLocation' parameter: class path resource [log4j.properties] cannot be resolved to URL because it does not exist 求解 折腾了一下午

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