<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0"  xmlns="http://java.sun.com/xml/ns/javaee"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name>  <!-- 聲明Struts2的前端控制器 --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>  <!-- 聲明Spring的ContextListener，負(fù)責(zé)上下文一加載立即創(chuàng)建BeanFactory --> <context-param> <!-- 若applicationContext.xml沒有放在WEB-INF下或者不叫這個名字，必需聲明此參數(shù) --> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value>  </context-param></web-app>

<?xml version="1.0" encoding="UTF-8" ?><!-- <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> --><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://www.yxccc.com/news/"><struts> <package name="bg" namespace="/" extends="struts-default"> <default-action-ref name="index"/> <!-- =================基礎(chǔ)跳轉(zhuǎn)====================== --> <action name="index">  <result>/WEB-INF/index.jsp</result> </action> </package></struts>

package com.fengqi.action;import java.io.IOException;import java.util.ArrayList;import java.util.List;import javax.servlet.http.HttpServletResponse;import net.sf.json.JSONArray;import org.apache.struts2.ServletActionContext;import com.google.gson.Gson;import com.opensymphony.xwork2.ActionSupport;/** * 創(chuàng)建時間：2014-10-24，ajax請求的action樣例 */public class AjaxRequestAction extends ActionSupport{ private String sex; @Override public String execute() throws Exception { return super.execute(); }  /** * ajax請求，以json格式的字符串響應(yīng)請求 */ public void ajaxString(){ System.out.println(sex); //獲取相應(yīng)Response HttpServletResponse response = ServletActionContext.getResponse();  //設(shè)置編碼方式 response.setCharacterEncoding("UTF-8");  try {  if(sex.equals("nan")){  response.getWriter().write("我是男的");  }else if(sex.equals("nv")){  response.getWriter().write("我是女的");  }else{  response.getWriter().write("男女都不是");  }  //將數(shù)據(jù)寫到頁面中 } catch (IOException e) {  e.printStackTrace(); } }  /** * ajax請求，以list的形式響應(yīng)請求，主要這里的list并不是Util的List，而是經(jīng)過轉(zhuǎn)換成指出json格式的List */ public void ajaxList(){ List<Object> list = new ArrayList<Object>(); list.add("張三"); list.add("李四"); //第一種方法：利用json-lib包中的JSONArray將List轉(zhuǎn)換成JSONArray各式。 JSONArray jsonArray = JSONArray.fromObject(list); //第二周方法：利用goole的json包將List轉(zhuǎn)換成Json對象。 Gson gson = new Gson(); String gsonList = gson.toJson(list); //獲取相應(yīng)Response HttpServletResponse response = ServletActionContext.getResponse();  //設(shè)置編碼方式 response.setCharacterEncoding("UTF-8");  try {  //將數(shù)據(jù)寫到頁面中  response.getWriter().println(jsonArray); } catch (IOException e) {  e.printStackTrace(); } } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

<package name="ajax" namespace="/ajax" extends="struts-default"><!-- =================ajax請求跳轉(zhuǎn)====================== --><action name="ajax_*" class="com.fengqi.action.AjaxRequestAction" method="ajax{1}"></action></package>

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://www.yxccc.com"><struts> <package name="bg" namespace="/admin" extends="struts-default"> <default-action-ref name="index"/> <!-- =================基礎(chǔ)跳轉(zhuǎn)====================== --> <action name="index">  <result>/WEB-INF/index.jsp</result> </action> </package> <package name="ajax" namespace="/ajax" extends="struts-default"> <!-- =================ajax請求跳轉(zhuǎn)====================== --> <action name="ajax_*" class="com.fengqi.action.AjaxRequestAction" method="ajax{1}"> </action> </package></struts>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head>  <base href="<%=basePath%>" rel="external nofollow" >    <title>ajax異步刷新樣例測試</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" /> <script src="js/jquery-2.1.1.min.js"></script> <script type="text/javascript"> $(document).ready(function() { $("#hh1").click(function(){  $.ajax({  url:"ajax/ajax_String",//請求url  data:{sex:$("#txt1").val()},  success:function(data){//請求返回的數(shù)據(jù)   $("div").html(data);//將數(shù)據(jù)打印到頁面的div中  }  }); }); $("#hh2").click(function() {  $.ajax({       url: "ajax/ajax_List",//請求url http://www.yxccc.com       //cache: false,       type: "POST", //請求頭，這里是post       datatype: 'json', //請求數(shù)據(jù)各式，這里是json格式       success: function(data,status){    data = $.parseJSON(data); //將字符串格式的數(shù)據(jù)轉(zhuǎn)換成json對象    //這里將option元素移除是考慮到如果在頁面不刷新的情況下多次請求，會產(chǎn)生數(shù)據(jù)累加，不符合業(yè)務(wù)需求,因此需先刪除在增加元素。       $("option").remove();        $("select").append("<option>請選擇</option>");//在select元素下添加option子元素。       $(data).each(function(i){ //遍歷請求相應(yīng)的data數(shù)據(jù)          $("select").append("<option>"+data[i]+"</option>");       })       }     });   }); }); </script>  </head> <body> <br>  <h2 align="center">這里是ajax請求Demo，該實例是請求Struts中的action</h2> <br>  <button id="hh1">請求返回常規(guī)字符串</button>  <button id="hh2">請求返回JSON格式的List</button><br><br>  <div>這里是div元素</div><br>  請選擇性別:<select id="txt1" name="sex">   <option>請選擇</option>   <option value="nan">男</option>   <option value="nv">女</option>  </select><br><br>    <select>  <option>select選擇</option>  </select>   </body></html>