web10 动态action的应用
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用Struts提供的动态action，处理添加用户信息请求及更新用户信息请求
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1、创建web项目，jwrm03-dongtaiAction，拷贝Struts包到lib，web.xml中注册Struts2的过滤器。（详见web08）
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2、创建UserAction的Action对象，并在这个Action对象中编写add（），update（）
package com.aikan66.action; import com.opensymphony.xwork2.ActionSupport; /* * 用户action * @auther cpy */ public class UserAction extends ActionSupport{ private static final long serialVersionUID=1L; //提示信息 private String info; //添加用户信息 public String add() throws Exception{ info="添加用户信息"; return "add"; } //更新用户信息 public String update() throws Exception{ info="更新用户信息"; return "update"; } public String getInfo(){ return info; } public void setInfo(String info){ this.info=info; } }
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3、配置struts.xml。
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <!-- 声明包 --> <package name="myPackage" extends="struts-default"> <!-- 定义action --> <action name="userAction" class="com.aikan66.action.UserAction"> <!-- 添加信息成功后的映射页面 --> <result name="add">user_add.jsp</result> <!-- 更新信息成功后的映射页面 --> <result name="update">user_update.jsp</result> </action> </package> </struts>
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4、创建user_add.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@ taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'user_add.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <font color="red"> <s:property value="info"/> </font> </body> </html>
类似创建user_update.jsp文件
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@ taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'user_update.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <font color="red"> <s:property value="info"/> </font> </body> </html>
index.jsp中添加超级链接
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@ taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <a href="userAction!add">添加用户信息</a><p> <a href="userAction!update">更新用户信息</a><br> </body> </html>
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5、部署，访问http://localhost:8080/jwrm03-dongtaiAction/index.jsp
点击“添加用户信息”
点击“更新用户信息”
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完毕
