Server Apache Tomcat v7.0 at localhost failed to start.

本文介绍在使用 Eclipse 创建 Servlet 类时遇到的映射冲突问题。由于 IDE 自动生成了 @WebServlet 注解,因此在 web.xml 中重复配置 servlet-mapping 会导致 Apache 启动失败。文章提供了详细的解决步骤。

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原因:eclipse在新建servlet类时,会自动注入servlet-mapping【@WebServlet("/MappingDemo2")】,此时不应在WEB-INF下的web.xml文件中再进行servlet-mapping的配置,否则会apache启动错误

解决办法:两种配置servlet-mapping的方法只能存在一个,不然就会报错






七月 17, 2025 5:08:23 下午 org.apache.catalina.startup.TldConfig execute 信息: 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. 七月 17, 2025 5:08:25 下午 org.apache.catalina.core.ContainerBase addChildInternal 严重: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/pty]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1984) at java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:750) Caused by: java.lang.NullPointerException at java.util.Objects.requireNonNull(Objects.java:203) at java.util.Arrays$ArrayList.<init>(Arrays.java:3813) at java.util.Arrays.asList(Arrays.java:3800) at com.pty.pa.license.service.PtyAppLicenseServiceImpl.checkRepetitionFile(PtyAppLicenseServiceImpl.java:508) at com.pty.pa.license.service.PtyAppLicenseServiceImpl.loadLicense(PtyAppLicenseServiceImpl.java:176) at com.pty.pa.license.ModuleEnvironmentProperty.postProcessEnvironment(ModuleEnvironmentProperty.java:30) at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:100) at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:86) at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131) at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82) at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:63) at java.util.ArrayList.forEach(ArrayList.java:1259) at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117) at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111) at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62) at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:362) at org.springframework.boot.SpringApplication.run(SpringApplication.java:320) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:173) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:153) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:95) at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:174) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5632) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 10 more 七月 17, 2025 5:08:25 下午 org.apache.catalina.startup.HostConfig deployWAR 严重: Error deploying web application archive /var/lib/tomcat/webapps/pty.war java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/pty]] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:903) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1984) 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:750) 七月 17, 2025 5:08:25 下午 org.apache.catalina.startup.HostConfig deployWAR 信息: Deployment of web application archive /var/lib/tomcat/webapps/pty.war has finished in 23,253 ms 七月 17, 2025 5:08:25 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["http-bio-8080"] 七月 17, 2025 5:08:25 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["ajp-bio-8009"] 七月 17, 2025 5:08:25 下午 org.apache.catalina.startup.Catalina start 信息: Server startup in 23329 ms 帮忙分析一下问题
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