JSP+jquery使用ajax方式调用json的实现方法
本文实例讲述了JSP+jQuery使用Ajax方式调用JSON的实现方法，在这里分享给大家以供大家参考，具体的实现以及代码如下所示：
前台：
<script type="text/javascript" src="jquery-1.5.1.min.js"></script><script type="text/javascript"> //test function test(uid) { if(confirm("确定该用户操作"+uid+"吗？")) { var date = new Date(); var param = {uid:uid}; jQuery.get("test.jsp?para=" + date, param, function(data){ if(data != null) { var result = data.result; //alert("data==="+data); if(result == 1) { alert("操作失败"); } if(result == 0) { alert("操作失败。"); //document.location.href = document.location; //window.location.reload(); } } }); } }</script><a href="#">submit</a>后台：
test.jsp：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%response.setContentType("application/x-json;charset=UTF-8");String uid=request.getParameter("uid");int ret=0;String result = "{\"result\":" + ret + "}";out.print(result);%>注意：返回json格式
如{"result":0}
需要设置 ：
代码如下:
response.setContentType("application/x-json;charset=UTF-8");jsp+jquery+ajax+json
Person、Address 2个类描述一个人，用ajax把数据取回显示在页面上，在DemoServlet里组装数据，项目用到的文件
json-lib-2.1-jkd15.jar
commons-lang-2.1.jar
commons-logging.jar
commons-collections-3.2.jar
commons-beanutils.jar
jquery.js
json.js
下面是详细代码：
Person:
public class Person implements java.io.Serializable{ private String name; private String sex; private Integer age; private Address address; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public Address getAddress() { return address; } public void setAddress(Address address) { this.address = address; } }Address:
public class Address implements java.io.Serializable{ private String province; private String city; private String country; public Address() { } public Address(String province, String city, String country){ this.province =province; this.city = city; this.country = country; } public String getProvince() { return province; } public void setProvince(String province) { this.province =province; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getCountry() { return country; } public void setCountry(String country) { this.country = country; } }DemoServlet:
import java.io.IOException; import java.util.ArrayList; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import org.wncnke.json.pojo.Address; import org.wncnke.json.pojo.Person; public class DemoServlet extends HttpServlet{ @Override protected void doGet(HttpServletRequest request,HttpServletResponse response) throwsServletException, IOException { doPost(request, response); } @Override protected void doPost(HttpServletRequest request,HttpServletResponse response) throwsServletException, IOException { response.setContentType("text/xml;charset=utf-8"); response.setHeader("Cache-Control","no-cache"); try{ Personperson1 = new Person(); person1.setName("小王"); person1.setSex("女"); person1.setAge(23); person1.setAddress(newAddress("辽宁省","大连市","高新园区")); List<Person> list = new ArrayList<Person>(); list.add(person1); try{ //取集合 JSONArray jsonArray = JSONArray.fromObject(list); JSONObject jsonObject = new JSONObject(); jsonObject.put("person", jsonArray); response.getWriter().write(jsonObject.toString()); } catch(IOException e) { e.printStackTrace(); } }catch(Exception e){ e.printStackTrace(); } } }web.xml:
<?xml version="1.0"encoding="UTF-8"?> <web-app xmlns="http://caucho.com/ns/resin" xmlns:resin="http://caucho.com/ns/resin/core"> <display-name>json</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>DemoServlet</servlet-name> <servlet-class>org.wncnke.json.servlet.DemoServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>DemoServlet</servlet-name> <url-pattern>/demoServlet</url-pattern> </servlet-mapping> </web-app>index.jsp:
view plaincopy to clipboardprint?<%@ page language="java" 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%>"> <mce:script language="javascript" src="script/jquery.js"mce_src="script/jquery.js"></mce:script> <mce:script language="javascript" src="script/json.js"mce_src="script/json.js"></mce:script> <mce:script language="javascript"><!-- function addPerson(){ $.getJSON("demoServlet",null,function call(data){ var list = data.person; $.each(list, function(i, p){ var row =$("#tr").clone(); row.find("#name").text(p.name); row.find("#age").text(p.age); row.find("#sex").text(p.sex); row.find("#address").text(p.address.province + p.address.city +p.address.country); row.appendTo("#tbody"); }); }); } // --></mce:script> </head> <body> <input type="button" value="JsonView"onClick="addPerson();"> <div> <tableborder="1"> <tr> <td>Name</td> <td>Sex</td> <td>Age</td> <td>Address</td> </tr> <tbody> <trid="tr"> <td></td> <td></td> <td></td> <td></td> </tr> </tbody> </table> </div> </body> </html>