Struts2 数据标签（一）在JSP页面中访问action类中数据-优快云博客

package com.wl.control.tagsAction;

import com.opensymphony.xwork2.ActionSupport;

public class RunAction extends ActionSupport {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String execute() throws Exception {

        return "runaction";
    }

}

3.新建JSP页面

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib uri="/struts-tags" prefix="s" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
     name的值是：
     <s:property value="#parameters.name"/>
  </body>
</html>

4.修改struts.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC 
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
   <package name="Struts2.1" extends="struts-default">
       <action name="runaction" class="com.wl.control.tagsAction.RunAction">
           <result name="runaction">/controlTags/runaction.jsp</result>
       </action>
   </package>
</struts>

5.创建使用Action标签的JSP页面

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib uri="/struts-tags" prefix="s" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
     显示runaction.jsp中的内容并且输出name参数的值：
     <br/>
     <s:action name="runaction" executeResult="true"></s:action>
     <br/>
     显示runaction.jsp中的内容并且不输出name参数的值：
     <br/>
     <s:action name="runaction" executeResult="true" ignoreContextParams="true"></s:action>
     <br/>
     仅仅调用runaction，不显示结果：
     <br/>
     <s:action name="runaction"></s:action>
     <br/>

  </body>
</html>

注释：[color=red][b]s:action标签的属性executeResult值为True时，代表返回一个结果页面在JSP页面中显示；s:action标签属性ignoreContextParams值为True时，代表忽略URL中的参数。[/b][/color]
6.运行结果

[img]http://dl.iteye.com/upload/attachment/382164/ec11f771-0c45-3ddf-89b0-5bb0ee1be822.png[/img]