JBWEB000236：servlet jsp的Servlet.service（）拋出異常：java.lang.NullPointerException：value爲null

嗨，我是JBoss的新手，並嘗試在JBoss EAP 6中部署我的Web應用程序。部署成功，並嘗試訪問該應用程序時，我收到以下異常。我正在使用logback和slf4j登錄我的應用程序。誰能幫我找到這個JBWEB000236：servlet jsp的Servlet.service（）拋出異常：java.lang.NullPointerException：value爲null

12:04:12,846 INFO [org.jboss.as] (Controller Boot Thread) JBAS015874: JBoss EAP 6.2.0.GA (AS 7.3.0.Final-redhat-14) started in 37270ms - Started 185 of 245 services (59 services are passive or on-demand) 
12:19:32,799 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/SynergyClient].[jsp]] (http-/127.0.0.1:9090-1) JBWEB000236: Servlet.service() for servlet jsp threw exception: java.lang.NullPointerException: value is null 
    at org.jboss.logmanager.MDC.put(MDC.java:58) [jboss-logmanager-1.5.1.Final-redhat-1.jar:1.5.1.Final-redhat-1] 
    at org.slf4j.impl.Slf4jMDCAdapter.put(Slf4jMDCAdapter.java:32) 
    at org.slf4j.MDC.put(MDC.java:116) [slf4j-api-1.7.2.redhat-2.jar:1.7.2.redhat-2] 
    at ch.qos.logback.classic.helpers.MDCInsertingServletFilter.insertIntoMDC(MDCInsertingServletFilter.java:70) [logback-classic-1.0.13.jar:] 
    at ch.qos.logback.classic.helpers.MDCInsertingServletFilter.doFilter(MDCInsertingServletFilter.java:49) [logback-classic-1.0.13.jar:] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14] 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1] 
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_09]

來源

2014-01-20 Rajin Das

顯示java.lang.NullPointerException解決方案：值爲null

那是一個非常簡單的例外。我的建議是逐個調試傳遞給JSP的值。

您的變量value正在傳遞爲null。檢查參數的名稱是否匹配，以及對於正確的參數變量是否存在適當的吸氣/吸氣裝置

來源

2014-01-20 06:48:18

感謝Saif的答案。但我的jsp文件中沒有一個名爲value的變量。同樣的戰爭文件得到部署，並與glassfish和tomcat服務器正常工作。 –

你可以在這裏粘貼你的SynergyClient.jsp文件嗎？ –

JBWEB000236：servlet jsp的Servlet.service（）拋出異常：java.lang.NullPointerException：value爲null

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