Struts 2.x No result defined for action 異常

 

這是我跑struts2的第一個例子，跑的也夠鬱悶的，這個問題煩了我幾個鍾。。。

 

2011-5-10 10:10:17 com.opensymphony.xwork2.util.logging.commons.CommonsLogger warn 警告: Could not find action or result No result defined for action com.augur.action.LoginAction and result success  at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:364)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266)  at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)  at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)  atorg.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)  at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)  at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)  at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)  at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)  at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)  at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)  at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)  at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)  at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)  at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)  at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)  at java.lang.Thread.run(Thread.java:662)

剛開始的login.jsp頁面代碼以下

<%@ page language="java" contentType="text/html; charset=gbk"     pageEncoding="gbk"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html>   <head>     <meta http-equiv="Content-Type" content="text/html; charset=gbk">     <title>My JSP 'index.jsp' starting page</title>   </head>      <body>     <form action="login.action" method="post">         <table align="center">             <caption>用戶登陸></caption>             <tr>                 <td>用戶名：<input type="text" name="username"/></td>             </tr>             <tr>                 <td>密&nbsp;&nbsp;碼：<input type="text" name="password" /></td>             </tr>             <tr align="center">                 <td colspan="2"><input type="submit" value="登陸" name="submit"/><input type="reset" value="重置"name="reset"/></td>             </tr>         </table>     </form>   </body> </html>

LoginAction.java的代碼以下

package com.augur.action; public class LoginAction {     private String username;     private String password;               public String getUsername() {         return username;     }     public void setUsername(String username) {         this.username = username;     }     public String getPassword() {         return password;     }     public void setPassword(String password) {         this.password = password;     }     public String execute() throws Exception     {         if("1".equals(getUsername()) && "1".equals(getPassword()))         {             System.out.println("驗證經過。。。");             return "success";         }         else         {             System.out.println("驗證失敗....");             return "failure";         }     } }

struts.xml文件以下

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC      "-//Apache Software Foundation//DTD Struts Configuration 2.1/EN"     "http://struts.apache.org/dtds/struts-2.1.dtd">     <struts>                  <package name="struts2" extends="struts-default">             <action name="login" class="com.augur.action.LoginAction">                 <result name="success">/welcome.jsp</result>                 <result name="failure">/error.jsp</result>             </action>         </package>     </struts>

 這個緣由找了好久，網上說的緣由也一大堆，關於格式轉換錯誤的我以爲都不可能，這是很簡單的一個例子。全都是String 類型的，壓根可能性很低。試了好幾個方法都不行。頭大了幾個鍾。後面網上看到了login.jsp頁面裏面 form的action屬性的login.action和struts的action標籤的name屬性要對應，而且login的頭字母要大寫，也就是login.jsp裏面form的action屬性要改成Login.action，而struts.xml文件裏面的action的name 也要對應的改成Login，發現這個錯誤真的很低級。固然形成這個錯誤可能也有其餘緣由。這只是其中之一。

 

 原文地址：http://blog.chinaunix.net/uid-9554081-id-2000842.html