动态Action的实现:
在下面用的是只用一个Action 来处理多个Form 的业务处理：
它的原理是：1利用一个隐藏的文本域传一个方法名：然后调用Action中相映的方法：而这个Action一定是一个DispatchAction 代码如下：
package com.struts.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.action.DynaActionForm;
import org.apache.struts.actions.DispatchAction;
public class LoginAction extends DispatchAction {
public ActionForward love(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
DynaActionForm da=(DynaActionForm)form;
System.out.println(da.get("name")+" I love you ！");
return null;
}
public ActionForward dislike(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
DynaActionForm da=(DynaActionForm)form;
System.out.println(da.get("name")+" I dislike you ！");
return null;
}
public ActionForward miss(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
DynaActionForm da=(DynaActionForm)form;
System.out.println(da.get("name")+" I miss you ！");
return null;
}
}
而在jsp中的页面中的代码如下：
<%@ page language="java" pageEncoding="utf-8"%>
<%@ 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 LoginForm form</title>
<script type="text/javascript">
<!--
function _action(_value){
document.forms[0].method.value=_value;
document.forms[0].submit();
}
//-->
</script>
</head>
<body>
<html:form action="/login">
<html:text property="name"/>
<html: hidden property="method"/>
姓名<input type="button" name="" value="love" onclick="_action(this.value)"/>
<input type="button" name="" value="dislike" onclick="_action(this.value)"/>
<input type="button" name="" value="miss" onclick="_action(this.value)"/>
</html:form>
</body>
</html>
如上是一个的一个hidden
然后在struts-config.xml中的配置中如下代码：标明hidden:
<action-mappings >
<action
attribute="loginForm"
input="/form/login.jsp"
name="loginForm"
path="/login"
parameter="method"
scope="request"
type="com.struts.action.LoginAction" />
</action-mappings>
在上面的parameter指定hidden
超链接访问如：<a herf="index.do?mehto=login"></a>