Apache Tiles 간단한 응용 프로그램을 만들 때 예외가 발생했습니다.

Question

첫 번째 Tiles 웹 페이지를 만들려고합니다. 나는 this tutorial를 사용하고 모든 CONFIGS 완료 후 나는이 예외를 받고 있어요 :

java.lang.NullPointerException 
    at org.apache.tiles.access.TilesAccess.getContainer(TilesAccess.java:124) 
    at org.apache.tiles.access.TilesAccess.getContainer(TilesAccess.java:107) 
    at org.apache.tiles.access.TilesAccess.getCurrentContainer(TilesAccess.java:174) 
    at org.apache.tiles.template.InsertDefinitionModel.execute(InsertDefinitionModel.java:95) 
    at org.apache.tiles.jsp.taglib.InsertDefinitionTag.doTag(InsertDefinitionTag.java:254) 
    at org.apache.jsp.menu.menu_jsp._jspx_meth_tiles_005finsertDefinition_005f0(menu_jsp.java:92) 
    at org.apache.jsp.menu.menu_jsp._jspService(menu_jsp.java:65) 
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) 
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) 
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 

나는 타일 - defs.xml을 만들어 내 web.xml의 모든 CONFIGS을 추가했다.

Answer 1

동일한 튜토리얼을 살펴 보면서 누락 된 구성을 발견했습니다. web.xml이 추가 :

<listener> 
    <listener-class>org.apache.tiles.web.startup.simple.SimpleTilesListener</listener-class> 
</listener> 

이 리스너는 응용 프로그램의 시작을 추적하고 (여기 만해야 주요 타일 설정 : /WEB-INF/tiles.xml) 기본 방식에 타일을 구성합니다이 기본 구성에 하드 코딩까지한다.