# 에러 메세지

심각: ContainerBase.addChild: start: 
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/my_first_web_app]]
 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
 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.deployDescriptor(HostConfig.java:656)
 at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1635)
 at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
 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: java.lang.IllegalArgumentException: Invalid <url-pattern> hello.do in servlet mapping
 at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3245)
 at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3220)
 at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1367)
 at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1351)
 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)
 ... 10 more

5월 29, 2014 5:41:48 오후 org.apache.catalina.startup.HostConfig deployDescriptor
심각: Error deploying configuration descriptor C:\Program Files\Apache Software Foundation\Tomcat 7.0\conf\Catalina\localhost\my_first_web_app.xml
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/my_first_web_app]]
 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:904)
 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.deployDescriptor(HostConfig.java:656)
 at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1635)
 at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
 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)

# 해결 방법

소스의 WEB-INF 폴더에 있는 web.xml 내용중

<servlet-mapping>의 <url-pattern>에 "/"가 빠진경우 발생

  <servlet>
    <servlet-name>hello_servlet</servlet-name>
    <servlet-class>foo.HelloServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>hello_servlet</servlet-name>
    <url-pattern>hello.do</url-pattern>
  </servlet-mapping>

를

  <servlet>
    <servlet-name>hello_servlet</servlet-name>
    <servlet-class>foo.HelloServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>hello_servlet</servlet-name>
    <url-pattern>/hello.do</url-pattern>
  </servlet-mapping>

로 변경하면 된다.

# 이글은 블러그 통합을 위해 http://savour75.tistory.com/14 에서 이행해온 글입니다.

출처: http://savour.tistory.com/315?category=715762 [사랑향기-아이들의 키만큼 커져가는 행복(포항)]