本文实例讲述了jQuery+json实现的简易Ajax调用。分享给大家供大家参考，具体如下：
Userservlet.java代码：
package com.iss.servlet;
import org.json.JSONException;
import org.json.JSONObject;
import com.iss.pojo.User;
import com.iss.util.JSONUtil;
public class UserServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
//list 添加对象
List userList = new ArrayList();
User user1 = new User("张三", "男", "18");
User user2 = new User("李四", "男", "19");
User user3 = new User("王五", "男", "20");
userList.add(user1);
userList.add(user2);
userList.add(user3);
PrintWriter out = response.getWriter();
String str = null;
try {
//帐号密码如果匹配则把list 返回给界面
if (request.getParameter("userName").equals("jquery")
&& request.getParameter("password").equals("ajax")) {
str = JSONObject.quote(JSONUtil.toJSONString(userList));
}
out.print(str);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("str "+str);
out.flush();
out.close();
}
}
Html代码：
帐号 jquery 密码 ajax 查询到的数据 <>UserServlet 记得要导入 工具类 JSONStringObject JSONUtil
jsp 要导入 jquery.js和 json.js
希望本文所述对大家jQuery程序设计有所帮助。
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