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POWhat's causing this NPE when I request an action?
 

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  1. POWhat's causing this NPE when I request an action?
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    <p>This error was not there when I first run my program,then I tried some experiment to get the flow of MVC architecture but now it is showing me this exception.</p> <p>I guess the problem is when I request via subscribe button it will go to <code>struts.xml</code> where it will look for action. The problem is in package tag what should be there </p> <pre><code>java.lang.NullPointerException org.apache.struts2.impl.StrutsActionProxy.getErrorMessage(StrutsActionProxy.java:69) com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185) org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63) org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39) com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:501) org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:432) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) java.lang.Thread.run(Thread.java:619) </code></pre> <p><strong><code>struts.xml</code>:</strong></p> <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"&gt; &lt;struts&gt; &lt;constant name="struts.devMode" value="true" /&gt; /*This package*/ &lt;package name="Struts2Ex2" extends="struts.default"&gt; &lt;action name="test" class="MyPack.Verify" method="execute"&gt; &lt;result name="success"&gt;/Test2/WelcomeHome.jsp&lt;/result&gt; &lt;/action&gt; &lt;/package&gt; &lt;/struts&gt; </code></pre>
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    1. CO**I got the soloution in package tag it should be** 'extends="struts-default"' instead **'extends="struts.default"'**
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    2. COPlease answer the question with an answer, not a comment.
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      1. USDave Newton
 

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