struts-config.xml有关问题---在线讨论。

Question

1，struts-config.xml
<struts-config>
  <action-mappings >
   <action path="/index" type="com.person.info.UserInfoAction"
    scope="request" parameter="method">
    <forward name="success" path="/jsp/personshow.jsp"/>
    <forward name="failed" path="/jsp/personshow.jsp"/>
   </action>  
   </action-mappings>
</struts-config>
2,jsp页面：
<form name="form1" method="post" action="/index.do?method=userinfo">
3，出现错误：
HTTP Status 404 - /index.do--------------------------------------------------------------------------------type Status reportmessage /index.dodescription The requested resource (/index.do) is not available.
--------------------------------------------------------------------------------Apache Tomcat/5.5.9
4，为什么出现上面的问题呢？-------请指教！

Answer 1

<form name="form1" method="post" action="/index.do?method=userinfo"> 
去掉 "/"就可以了

Answer 2

因为.在普通的<form>里面 / 并不能代表你的 根路径.
除非是<html:form> 

Answer 3

去掉后执行，变成下面错误了
HTTP Status 500 - No action instance for path /index could be created--------------------------------------------------------------------------------type Status reportmessage No action instance for path /index could be createddescription The server encountered an internal error (No action instance for path /index could be created) that prevented it from fulfilling this request.
--------------------------------------------------------------------------------Apache Tomcat/5.5.9

Answer 4

No action instance for path /index could be created
这段是指你的index页面中没有包含action
而你在struts－config中定义了action的路径是index页面
struts-config> 
   <action-mappings > 
   <action path="/index" type="com.person.info.UserInfoAction" 
    scope="request" parameter="method"> 
     <forward name="success" path="/jsp/personshow.jsp"/> 
     <forward name="failed" path="/jsp/personshow.jsp"/> 
   </action>   
    </action-mappings> 
</struts-config>
把path指向你的action所在页面

Answer 5

在页面上import action后，还是报出：
HTTP Status 500 - No action instance for path /index could be created--------------------------------------------------------------------------------type Status reportmessage No action instance for path /index could be createddescription The server encountered an internal error (No action instance for path /index could be created) that prevented it from fulfilling this request.
--------------------------------------------------------------------------------Apache Tomcat/5.5.9
继续求教！！！！

Answer 6

上面的问题已经解决了，但是现在系统又报出：
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: Action[/index] does not contain specified method (check logs)
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NoSuchMethodException: Action[/index] does not contain specified method (check logs)
org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:264)
org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.9 logs.请教各位！！！

Answer 7

你的  action  中的 check logs 方法有问题啊。

Answer 8

<form name="form1" method="post" action="${pageContext.request.contextPath}/index.do?method=userinfo">  
这样改下试试

Answer 9

我的action中根本就没有check log方法啊。

Answer 10

package com.person.info.action;
import java.sql.SQLException;
import org.apache.log4j.*;
import org.apache.struts.actions.*;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.*;
import com.person.info.server.*;
public class UserInfoAction  extends DispatchAction{

public final static Logger logger =Logger.getLogger(UserInfoAction.class);
/*
 * 验证用户登录时的密码正确性；
 * auth by liudb
 * parameter userinfo 
 */
  public ActionForward validLogin(ActionForm form,ActionMapping mapping,HttpServletRequest
  request,HttpServletResponse response)throws Exception{
  System.out.println("222222222222222");
  logger.info("Test here...");
  System.out.println("1111111111111111");
  String name=request.getParameter("name");
      String password=request.getParameter("mypass");  
      UserInfoService user = new UserInfoService();
if(user.validUser(name, password)){
return mapping.findForward("success");
}
else{
return mapping.findForward("failed");   
}
  }
}

Answer 11

<form name="form1" method="post" action="/index.do?method=userinfo"> 
没看见你的UserInfoAction里面有userinfo方法阿

Answer 12

刚才是改了。现在是这样的：
<form name="form1" method="post" action="index.do?method=validLogin">

Answer 13

后台：
信息: Server startup in 3203 ms
2008-04-21 14:56:36,765 [http-8080-Processor24] ERROR org.apache.struts.actions.DispatchAction - Action[/index] does not contain method named 'validLogin'
java.lang.NoSuchMethodException: com.person.info.action.UserInfoAction.validLogin(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
at java.lang.Class.getMethod(Class.java:1581)
at org.apache.struts.actions.DispatchAction.getMethod(DispatchAction.java:347)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:255)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
2008-04-21 14:56:36,781 [http-8080-Processor24] WARN  org.apache.struts.action.RequestProcessor - Unhandled Exception thrown: class java.lang.NoSuchMethodException
2008-04-21 14:56:36,781 [http-8080-Processor24] ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/myinfo].[action] - Servlet.service() for servlet action threw exception
java.lang.NoSuchMethodException: Action[/index] does not contain specified method (check logs)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:264)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)前台（jsp页面）：
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: Action[/index] does not contain specified method (check logs)
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NoSuchMethodException: Action[/index] does not contain specified method (check logs)
org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:264)
org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.9 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.9

Answer 14

<form name="form1" method="post" action="${pageContext.request.contextPath}/index.do?method=validLogin">   这样改下！看看

Answer 15

index与webroot是同一级目录哦~~

Answer 16

public ActionForward validLogin(ActionForm form,ActionMapping mapping,HttpServletRequest 
  request,HttpServletResponse response)==>public ActionForward validLogin(ActionMapping mapping,ActionForm form,HttpServletRequest 
  request,HttpServletResponse response)注意看错误信息的java.lang.NoSuchMethodException: com.person.info.action.UserInfoAction.validLogin(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) ，你前面两个参数顺序倒了

Answer 17

刚才问题没有了，现在还是出现以前的那个问题：
2008-04-21 15:20:05,906 [http-8080-Processor25] ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/myinfo].[action] - Servlet.service() for servlet action threw exception
java.lang.NoSuchMethodException: Action[/index] does not contain specified method (check logs)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:264)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
at org.apache.struts.actions.MappingDispatchAction.execute(MappingDispatchAction.java:169)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
请指教！！！

Answer 18

问题解决，原因是DispatchAction和MappingDispatchAction还是有区别的，
谢谢以上的各位同仁

Answer 19

form里的请求路径带上你的web moduel名在跟/index.do...