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DispatchActionDemo

    博客分类：
  • J2EE
StrutsJavaJSPApacheSQL 
阅读更多

DispatchAction 的作用就是在一个action 中可以个管理（启用）多个action，比原来使用的时候一个action对应一个表单要方便快捷 实用。下面举个小例子来说明DispatchAction的用法

4 个jsp 页面  reg2.jsp  mima.jsp   reg2ok.jsp  mimaok.jsp 

reg2.jsp 
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>

<body>
<form id="form1" name="form1" method="post" action="m.do?cc=reg2">
  <p>往&nbsp;action里面的&nbsp; reg2 里面跳转 </p>
  <p>
    <label>
    <input type="submit" name="Submit" value="提交" />
    </label>
  </p>
</form>
</body>
</html>




mima.jsp 
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>

<body>
<form id="form1" name="form1" method="post" action="m.do?cc=mima">
  <p>往 action 里面的mima 跳转</p>
  <p>
    <label>
    <input type="submit" name="Submit" value="提交" />
    </label>
  </p>
  <p>&nbsp;  </p>
</form>
</body>
</html>


reg2ok.jsp 
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>

<body>
reg2&nbsp;跳转成功
</body>
</html>



mimaok.jsp 
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>

<body>
mima 跳转成功 
</body>
</html>


1 个 action 

package action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;


public class MAction extends DispatchAction {

	public ActionForward reg2(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		// TODO Auto-generated method stub
		return mapping.findForward("ok1");
	}
	
	public ActionForward mima(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		// TODO Auto-generated method stub
		return mapping.findForward("ok2");
	}
}



Struts-config.xml 
<?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>
  <data-sources />
  <form-beans />
  <global-exceptions />
  <global-forwards />
  <action-mappings >
    <action path="/m" type="action.MAction" parameter="cc">
      <forward name="ok1" path="/reg2.jsp" />
      <forward name="ok2" path="/mimaok.jsp" />
    </action>

  </action-mappings>

  <message-resources parameter="com.yourcompany.struts.ApplicationResources" />
</struts-config>

注意<action path="/m" type="action.MAction" parameter="cc">
里面的 parameter 参数










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