struts初学问题

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>  <form-beans>
<form-bean name="addform" type="ch02.AddForm" />
  </form-beans>
<action-mappings>
<action name="addform" path="/add" scope="request"
type="ch02.AddAction" >
<forward name="input" path="/ch02/add.jsp" />
<forward name="result" path="/ch02/jieguo.jsp" />
</action>
</action-mappings></struts-config>
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>package ch02;import javax.servlet.http.*;import org.apache.struts.action.*;public class AddAction extends ActionForm {
   private Calculator biz=new Calculator();
public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response){
   ActionForward af=null;
   AddForm addform=(AddForm)form;
   double resultData=biz.add(addform.getNum1(), addform.getNum2());
   request.setAttribute("result", resultData);
   af=mapping.findForward("result");
   return af;
   }
}
package ch02;import org.apache.struts.action.ActionForm;public class AddForm extends ActionForm {
   private double num1;
   private double num2;
public double getNum1() {
return num1;
}
public void setNum1(double num1) {
this.num1 = num1;
}
public double getNum2() {
return num2;
}
public void setNum2(double num2) {
this.num2 = num2;
}

}package ch02;public class Calculator {
   public double add(double a,double b){
   return a+b;
   }
   public double multiply(double a,double b){
   return a*b;
   }
}
<%@ page language="java" import="java.util.*" pageEncoding="GBK" contentType="text/html; charset=GBK" %><html>
  <head>  <title>加法器</title>
  <style type="text/css">

  </style>
  </head>

  <body>   <p class="STYLE1">加法器</p>
  <form name="form1" method="post" action="/add.do">
    <table width="60%" border="0">
      <tr>
        <td width="22%">第一个</td>
        <td width="78%"><label>
          <input type="text" name="num1">
        </label></td>
      </tr>
      <tr>
        <td>第二个</td>
        <td><input type="text" name="num2"></td>
      </tr>
      <tr>
        <td><label>
          <input type="submit" name="Submit" value="加">
        </label></td>
        <td></td>
      </tr>
    </table>
    </form>
  <p>  </p>
  </body>
</html>
提示错误
2010-5-12 23:07:09 org.apache.struts.action.RequestProcessor processMapping
严重: Invalid path was requested /ch02/addHTTP Status 404 - Invalid path was requested--------------------------------------------------------------------------------type Status reportmessage Invalid path was requesteddescription The requested resource (Invalid path was requested) is not available.
希望高手指点谢谢

解决方案 »

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path="/ch02/add.jsp"
似乎是该路径不存在
看不出。你的jsp是否放在WebContent下面？
public class AddAction extends ActionForm
继承错了public class AddAction extends Action
struts-config.xml的配置
<struts-config>
  <data-sources />
  <form-beans >
    <form-bean name="addForm" type="com.yourcompany.struts.form.AddForm" />  </form-beans>  <global-exceptions />
  <global-forwards />
  <action-mappings >
    <action
      attribute="addForm"
      input="/add.jsp"
      name="addForm"
      path="/add"
      scope="request"
      type="com.yourcompany.struts.action.AddAction">
      <forward name="result" path="/result.jsp" />
    </action>  </action-mappings>  <message-resources parameter="com.yourcompany.struts.ApplicationResources" />
</struts-config>
web.xml的配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>
action的代码
/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.yourcompany.struts.action;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;import com.yourcompany.struts.DAO.Dao;
import com.yourcompany.struts.form.AddForm;/**
* MyEclipse Struts
* Creation date: 05-13-2010
*
* XDoclet definition:
* @struts.action path="/add" name="addForm" input="/add.jsp" scope="request" validate="true"
*/
public class AddAction extends Action {
/*
* Generated Methods
*/ Dao dao=new Dao();
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
AddForm addForm = (AddForm) form;// TODO Auto-generated method stub
double result=0;

result=dao.add(addForm.getFirst(), addForm.getSecound());
if (result!=0) {
request.setAttribute("result",result);
return mapping.findForward("result");
}
return null;
}
}
Dao类的代码
package com.yourcompany.struts.DAO;/***
* 数据访问层
* 方法
* @author Administrator
*
*/
public class Dao { public double add(double a ,double b)
{
  return a+b;
}

}
add.jsp 的页面代码
<%@ page language="java" pageEncoding="GBK"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%><html>
<head>
<title>JSP for AddForm form</title>
</head>
<body>
<html:form action="/add">
第一个数 : <html:text property="first" />
<html:errors property="first" />
<br />
第二个数 : <html:text property="secound" />
<html:errors property="secound" />
<br />
<html:submit  value="加"/>
</html:form>
</body>
</html>result.jsp返回的结果页面代码
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%><html>
  <head>

    <title>结果页面</title>  </head>

  <body>
    您得到的结果是：${requestScope.result }
  </body>
</html>
给楼主的建议：
多看使用struts框架开发的成功实例项目！比较自己做的项目你会有丰富的收获的！
已经搞定了谢谢大家啊 <form name="form1" method="post" action="add.do">
改为
<form name="form1" method="post" action="../add.do">
就可以了谢谢大家对我的关注！