SEVERE : 시작시 tomcat8에서 하위 컨테이너가 실패했습니다.

Question

간단한 sevlet 프로그램을 작성했습니다. 내가 바람둥이에 같은 것을 배포하려고 할 때 나는 아래의 오류를 얻고있다.

주석을 삭제하여 시도했습니다.

SEVERE: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Trial]] 
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:916) 
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:868) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) 
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[/Trial]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
... 6 more 
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> firstTest in servlet mapping 
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3104) 
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:3079) 
at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1368) 
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1172) 
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:767) 
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:302) 
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:5074) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 6 more 

Sep 19, 2014 9:51:45 PM org.apache.catalina.core.ContainerBase startInternal 
SEVERE: 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:916) 
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:760) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.startup.Catalina.start(Catalina.java:625) 
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:351) 
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) 
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:924) 
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:868) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 6 more 

Sep 19, 2014 9:51:45 PM org.apache.catalina.startup.Catalina start 
SEVERE: 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:154) 
at org.apache.catalina.startup.Catalina.start(Catalina.java:625) 
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:351) 
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:760) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 7 more 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 9 more 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924) 
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 11 more 

Sep 19, 2014 9:51:45 PM org.apache.coyote.AbstractProtocol pause 
INFO: Pausing ProtocolHandler ["http-nio-8080"] 
Sep 19, 2014 9:51:45 PM org.apache.coyote.AbstractProtocol pause 
INFO: Pausing ProtocolHandler ["ajp-nio-8009"] 
Sep 19, 2014 9:51:45 PM org.apache.catalina.core.StandardService stopInternal 
INFO: Stopping service Catalina 
Sep 19, 2014 9:51:45 PM org.apache.coyote.AbstractProtocol destroy 
INFO: Destroying ProtocolHandler ["http-nio-8080"] 
Sep 19, 2014 9:51:45 PM org.apache.coyote.AbstractProtocol destroy 
SEVERE: Failed to destroy end point associated with ProtocolHandler ["http-nio-8080"] 
java.lang.NullPointerException 
at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:307) 
at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:482) 
at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:795) 
at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:531) 
at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023) 
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305) 
at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:588) 
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305) 
at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:850) 
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305) 
at org.apache.catalina.startup.Catalina.start(Catalina.java:629) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAcc 

서블릿 코드는 다음과 같습니다. 서버가 응용 프로그램없이 정상적으로 시작됩니다.

import java.io.IOException; 
import javax.servlet.ServletException; 
import javax.servlet.annotation.WebServlet; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 

/** 
* Servlet implementation class MyServlet 
*/ 

public class MyServlet extends HttpServlet { 
private static final long serialVersionUID = 1L; 

    /** 
    * Default constructor. 
    */ 
    public MyServlet() { 
     // TODO Auto-generated constructor stub 
    } 

/** 
    * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) 
    */ 
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
    // TODO Auto-generated method stub 
} 

/** 
    * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) 
    */ 
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
    // TODO Auto-generated method stub 
} 

} 

Answer 1

중첩 스택 추적에서이 메시지를 보았습니까?

Caused by: java.lang.IllegalArgumentException: 
    Invalid <url-pattern> firstTest in servlet mapping 

잘못된 url-pattern을 가진 web.xml에는 servlet-mapping 요소가 있습니다. 해당 파일에서 문제를 찾으십시오.

Answer 2

URL 패턴이 잘못되었습니다. XML 파일 확인