jquery为下拉框添加option(3)

        response.setContentType("application/json;charset=gbk");  
        response.setCharacterEncoding("gbk");  
        PrintWriter pw = response.getWriter();  
        pw.write(JSONUtils.valueToString(json));  
        pw.flush(); 
        } 
        return null; 
    } 
public void setLoginService(LoginService loginService) { 
    this.loginService = loginService; 
} 
    public static void main(String[] args) { 
        String testStr =  
"{ \"employees\":[{\"user_id\": 841 , \"user_name\":\"EnidChen\"},{\"user_id\": \"1445\" , \"user_name\":\"JulieZhu\"},{\"user_id\": \"1447\" , \"user_name\":\"JasonMa\"}]}"; 
     
         www.2cto.com
        System.out.println(testStr); 
        Map json = (Map) JSONSerializer.toJSON(testStr); 
        List employees = (List) json.get("employees"); 
        System.out.println(employees.size()); 
        Map json2 = (Map) JSONSerializer.toJSON(employees.get(0)); 
         
        System.out.println(json2.get("user_id")); 
        System.out.println(json2.get("user_name")); 
         
    } 
} 

摘自 xinghui_liu的专栏