最近在自學Java，在用hibernate框架啟動一個項目的時候報標題上的錯誤，百度各種方式嘗試之后仍然沒有解決，幾乎崩潰，最后查到可能是因為servelet文件已添加注解，web.xml又重新配置了servlet，導致兩個servlet發生沖突，最后經過嘗試，已解決。真是豁然開朗。回想下當時的場景，當時在創建servlet文件時，它是自動添加注解的，這個時候就不需要在web.xml配置，新手沒辦法呀，只能硬生生的去找錯誤。下面把詳細錯誤貼出來記錄，也可以幫助到后期在遇到這個錯誤的萌新們。
十一月 27, 2018 10:34:31 上午 org.apache.tomcat.util.digester.SetPropertiesRule begin
警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:hibernate_crm' did not find a matching property.
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Server version: Apache Tomcat/7.0.90
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Server built: Jul 2 2018 17:05:37 UTC
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Server number: 7.0.90.0
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: OS Name: Windows 7
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: OS Version: 6.1
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Architecture: amd64
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Java Home: C:\Program Files\Java\jre1.8.0_181
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: JVM Version: 1.8.0_181-b13
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: JVM Vendor: Oracle Corporation
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: CATALINA_BASE: E:\GFworkspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: CATALINA_HOME: C:\Users\fj\Desktop\apache-tomcat-7.0.90
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dcatalina.base=E:\GFworkspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dcatalina.home=C:\Users\fj\Desktop\apache-tomcat-7.0.90
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dwtp.deploy=E:\GFworkspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Djava.endorsed.dirs=C:\Users\fj\Desktop\apache-tomcat-7.0.90\endorsed
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dfile.encoding=GBK
十一月 27, 2018 10:34:31 上午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre1.8.0_181\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre1.8.0_181/bin/server;C:/Program Files/Java/jre1.8.0_181/bin;C:/Program Files/Java/jre1.8.0_181/lib/amd64;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files\Java\jdk1.7.0_51\bin;C:\Program Files\Java\jdk1.7.0_51\jre\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\VisualSVN Server\bin;C:\Program Files\TortoiseSVN\bin;D:\IDM Computer Solutions\UltraEdit;D:\My Sql\bin\bin;D:\My Sql\bin;C:\Users\fj\AppData\Local\Programs\Python\Python36-32\Scripts\;C:\Users\fj\AppData\Local\Programs\Python\Python36-32\;D:\eclipse官網版本;;.
十一月 27, 2018 10:34:31 上午 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["http-bio-8080"]
十一月 27, 2018 10:34:31 上午 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["ajp-bio-8009"]
十一月 27, 2018 10:34:31 上午 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1402 ms
十一月 27, 2018 10:34:31 上午 org.apache.catalina.core.StandardService startInternal
信息: Starting service Catalina
十一月 27, 2018 10:34:31 上午 org.apache.catalina.core.StandardEngine startInternal
信息: Starting Servlet Engine: Apache Tomcat/7.0.90
十一月 27, 2018 10:34:36 上午 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.
十一月 27, 2018 10:34:36 上午 org.apache.catalina.core.ContainerBase startInternal
嚴重: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/hibernate_crm]]
at java.util.concurrent.FutureTask.report(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1241)
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$StartChild.call(ContainerBase.java:1702)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1692)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/hibernate_crm]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
... 6 more
Caused by: java.lang.IllegalArgumentException: The servlets named [AddCustomerServlet] and [cn.itheima.web.AddCustomerServlet] are both mapped to the url-pattern [/AddCustomerServlet] which is not permitted
at org.apache.catalina.deploy.WebXml.addServletMapping(WebXml.java:293)
at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2448)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2123)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2084)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2076)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2076)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2076)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1293)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:388)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5566)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
... 6 more
十一月 27, 2018 10:34:36 上午 org.apache.catalina.core.ContainerBase startInternal
嚴重: 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(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1241)
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:705)
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: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:1702)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1692)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1249)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
... 6 more
十一月 27, 2018 10:34:36 上午 org.apache.catalina.startup.Catalina start
嚴重: 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:705)
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: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:1249)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
... 11 more
十一月 27, 2018 10:34:36 上午 org.apache.coyote.AbstractProtocol pause
信息: Pausing ProtocolHandler ["http-bio-8080"]
十一月 27, 2018 10:34:36 上午 org.apache.coyote.AbstractProtocol pause
信息: Pausing ProtocolHandler ["ajp-bio-8009"]
十一月 27, 2018 10:34:36 上午 org.apache.catalina.core.StandardService stopInternal
信息: Stopping service Catalina
十一月 27, 2018 10:34:36 上午 org.apache.coyote.AbstractProtocol destroy
信息: Destroying ProtocolHandler ["http-bio-8080"]
十一月 27, 2018 10:34:36 上午 org.apache.coyote.AbstractProtocol destroy
信息: Destroying ProtocolHandler ["ajp-bio-8009"]