后台返回json对象：
package com.sawshaw.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.alibaba.fastjson.JSONObject;
@Controller
@RequestMapping("/hello")
public class HelloController {
@RequestMapping("/greeting")
@ResponseBody
public String greeting(){
JSONObject js=new JSONObject();
js.put("id", "myId");
js.put("content", "mycontent");
return js.toJSONString();
}
}
前台解析：
$(document).ready(function() {
$.ajax({
url: "hello/greeting"
}).then(function(data) {
var obj=JSON.parse(data);
//或者var obj=eval（"("+data+")");解析
console.log(obj.id);
$('.greeting-id').append(obj.id);
$('.greeting-content').append(obj.content);
});
});
</script>
后台返回数组数据的：
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int user_id = Integer.parseInt(request.getParameter("user_id"));
User user;
try {
user = service.queryUserById(user_id);
if (user != null) {
response.getWriter().print(user.getUser_name() + "," + user.getUser_phone() + "," + user.getUser_email() + "," + user.getUser_adress());
} else {
response.getWriter().print("false");
}
} catch (SQLException e) {
e.printStackTrace();
}
}
前台解析：
<script>
$(function(){
var id=getUrlParam("id").replace(/\+/g," ");
$("#u_id").val(id);
$.ajax({
url : 'queryByUserId',
type : 'get',
contentType : 'text/html',
data : {user_id:id}
}).done(function(data) {
if(data!=false){
var arr=data.split(",");
if(arr[0]!="null"){
$("#u_name").val(arr[0]);
}
if(arr[1]!="null"){
$("#u_phone").val(arr[1]);
}
if(arr[2]!="null"){
$("#u_email").val(arr[2]);
}
if(arr[3]!="null"){
$("#u_adress").val(arr[3]);
}
}else{
alert("查找用户失败");
}
}).fail(function(data) {
}).always(function() {
console.log("complete");
});
$("#updateSubmit").click(function(){
if($("#u_name").val()==""){
alert("用户名不为空");
}
});
});
function getUrlParam(name){
var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象
var r = window.location.search.substr(1).match(reg); //匹配目标参数
if (r!=null) return unescape(r[2]); return null; //返回参数值
}
</script>
后台返回json数组的：
@WebServlet(urlPatterns = "/userQueryOrder")
public class OrderUserQueryOrderServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
OrderService service = new OrderServiceImpl();
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
HttpSession session = request.getSession();
User user = (User) session.getAttribute("user");
int user_id = user.getUser_id();
try {
List<Order> list = service.userQueryOrder(user_id);
JSONArray orderList = JSONArray.fromObject(list);
response.getWriter().println(orderList);
} catch (Exception e) {
e.printStackTrace();
}
}
前台解析：
$.ajax({
url : 'userQueryOrder',
type : 'get',
dataType : 'json',
contentType:'text/html'
}).done(function(data) {
//var json=eval（"("+data+")");
for(var i=0;i<data.length;i++){
$("#orderList").append("<table>"
+"<tr class='order_detail'>"
+"<td class='order_id'>"+ data[i].order_id+"</td>"
+"<td class='order_price'>"+data[i].order_price+"</td>"
+"<td class='order_time'>"+(parseInt(data[i].order_time.year)+1900)+"-"+(parseInt(data[i].order_time.month)+1)+"-"+(data[i].order_time.date)+" "+(parseInt(data[i].order_time.hours)+1)+":"+(data[i].order_time.minutes)+":"+(data[i].order_time.seconds)+"</td>"
+"</tr>"
+"</table>"
+"<table class='orderDetail' style='display:none;'>"
+"<tr>"
+"<td>商品名</td>"
+"<td>价格(元)</td>"
+"<td>数量</td>"
+"</tr>"
+"</table>"
+"<div class='XX'>"
+"</div>");
}
}).fail(function(data) {
