ajax异步刷新

前台js

 1 <script type="text/javascript">
 2 
 3   function getLands() {
 4   
 5       $.ajax({
 6         url:"httpserver.do?doPost&userQygs="+$("#userQygs").val(),
 7         type:"POST",
 8         dataType:"text",
 9       
10         success:function(data){
11        
12          if(data==null||data==""){
13             
14             alert("目前没有地块可供选择，请先绘制地块！");
15             location.href ="gpadd.do?toArcgis&state=1";
16          }else{
17        
18             var lands=data.split(",");
19          
20            //获得前台的div  
21            var insertDiv = document.getElementById("land");  
22            //定义向前台插入的内容为空  
23            insertDiv.innerHTML = "";  
24            var chkinfo;  
25            var chkDIV;  
26            //var txtinfo;  
27            //解析从服务器获得的数据,循环添加复选框  
28            for (var i = 0; i < lands.length-1; i++) {  
29                //为每一个复选框创建一个DIV  
30                chkDIV = document.createElement("div");  
31                //每一个复选框用input创建，类型为checkBox  
32                chkinfo = document.createElement("input");  
33                chkinfo.name = "landDkbh";  
34                chkinfo.id = "landDkbh";  
35                chkinfo.type = "checkbox";  
36               // chkinfo.onclick = test;  
37                //将每一个chinesename为复选框赋值  
38                chkinfo.value = lands[i];  
39               //将复选框添加到Div中  
40                chkDIV.appendChild(chkinfo);  
41                //为Div设置样式  
42                chkDIV.style.height = "50px";  
43                chkDIV.style.width = "150px";  
44                chkDIV.style.float = "left";  
45                chkDIV.align = "left";  
46                chkDIV.appendChild(document.createTextNode(lands[i]));  
47                //将创建的div添加到前台预留的DIV下  
48                insertDiv.appendChild(chkDIV);          
49            }  
50            }
51         }
52     });
53  
54  }

后台

 1 package org.lq.ssm.gp.controller;
 2 
 3 import java.io.IOException;
 4 import java.io.PrintWriter;
 5 
 6 import javax.annotation.Resource;
 7 import javax.servlet.ServletException;
 8 import javax.servlet.http.HttpServlet;
 9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11 
12 import org.lq.ssm.gp.service.LandUserBiz;
13 import org.springframework.stereotype.Controller;
14 import org.springframework.web.bind.annotation.RequestMapping;
15 @SuppressWarnings("serial")
16 @Controller
17 @RequestMapping("httpserver.do")
18 public class httpserverController extends HttpServlet{
19     
20     @Resource(name="landUserAction")
21     private LandUserBiz landUserBiz;
22     
23     
24     public void doGet(HttpServletRequest request, HttpServletResponse response)
25             throws ServletException, IOException {
26     
27         response.setContentType("text/html;charset=gbk");
28         response.setHeader("Cache-Control", "no-cache");
29         response.setCharacterEncoding("gbk");
30         PrintWriter out=response.getWriter();
31         request.setCharacterEncoding("gbk");
32         //获取搜索框输入的内容
33       
34         String userqygs=request.getParameter("userQygs");
35         userqygs=new String(userqygs.getBytes("iso-8859-1"), "gbk");
36         System.out.println("区域："+userqygs);
37       
38         String res=landUserBiz.getLands(userqygs);
39         System.out.println("字符串："+res);
40         //response.getWriter().write(res);
41         out.write(res);
42      
43       
44     }
45 
46     @RequestMapping(params="doPost")
47     public void doPost(HttpServletRequest request, HttpServletResponse response)
48             throws ServletException, IOException {
49        
50         doGet(request, response);
51 
52     }
53 
54 
55     public LandUserBiz getLandUserBiz() {
56         return landUserBiz;
57     }
58 
59 
60     public void setLandUserBiz(LandUserBiz landUserBiz) {
61         this.landUserBiz = landUserBiz;
62     }
63     
64    
65 }