Ajax示例

1：页面JS

var url = "./user.action?id=xxx&mdmd=xxx";

$.get(url,{
        "action1":"",
        "value":obj.value,
        "tmp":+Math.random()
    },function(data){
     var v_data = jQuery.parseJSON(data);
     v_List = v_data;
     for(var v_i=0; v_i < v_data.length; v_i++){
      var o = document.createElement("option");
      document.saveForm.userId.options.add(o);
      o.value=v_data[v_i].id;
      o.innerHTML=v_data[v_i].name;
      if(document.saveForm._userId.value == v_data[v_i].id){
       o.selected = "true";
       changeUserType(document.saveForm.userId);
      }
     }
   });

 

2:java

import net.sf.json.JSONArray ;

List<User> userList = new ArrayList<User> ();
 
String jsonStr = JSONArray.fromObject(userList.toArray(new User[userList.size()])).toString();
response.setContentType("text/plain;charset=UTF-8");
try {
 response.getWriter().write(jsonStr);
} catch (Exception e) {
 e.printStackTrace();
}

 

3:示例2

json-1.7.1.jar
import  com.google.gson.Gson;

String objectStr = request.getParameter("Str");
Gson gson = new Gson();
if(null == objectStr || "".equals(objectStr)){
    objectStr = "";
}
String objectStr2 = URLDecoder.decode(objectStr,"UTF-8");
//从PAD发过来的字符串传成VO list
AbcVo abcVo = gson.fromJson(objectStr2, AbcVo.class);

 

Gson gson = new Gson();
//把vo列表对象改成string发到PAD
String ObjectStr = gson.toJson(o);
  

AbcVo.java
//VO对象
public class AbcVo {
 
 private User u;
 
 private List<dept> deptList; 
 
 private Long userId;
 private String deptName;

//getters setters
}