首页 > Web开发 > 详细

使用fastJSON解析HashMap中的数据

时间:2017-05-09 10:37:43      阅读:714      评论:0      收藏:0      [点我收藏+]
import java.util.HashMap;  
 import java.util.Iterator;  
 import java.util.Map;  
 import java.util.Map.Entry;  
 import java.util.Set;  
  
 import com.alibaba.fastjson.JSON;  
 import com.alibaba.fastjson.TypeReference;  
  
  
public class Demo {  
    public static void main(String[] args) {  
        Map<String, Student> map = new HashMap<String, Student>();  
        Student stu1 = new Student("1", "莎拉波娃");  
        Student stu2 = new Student("2", "布沙尔");  
        Student stu3 = new Student("3", "哈勒普");  
  
  
        map.put("00011", stu1);  
        map.put("00012", stu2);  
        map.put("00013", stu3);  
  
  
        objectToStr(map);  
        String str = "{‘00011‘:{‘id‘:‘1‘,‘name‘:‘silei‘},‘00012‘:{‘id‘:‘2‘,‘name‘:‘布沙尔‘},‘00013‘:{‘id‘:‘3‘,‘name‘:‘哈勒普‘}}";  
        strToObject(str);  
    }  
  
  
    public static void strToObject(String str) {  
        Map<String, Student> map = (Map<String, Student>) JSON.parseObject(str, new TypeReference<Map<String, Student>>() {  
        });  
        Set<Entry<String, Student>> m = map.entrySet();  
        Iterator<Entry<String, Student>> it = m.iterator();  
        while (it.hasNext()) {  
            Entry<String, Student> en = it.next();  
            String id = en.getKey();  
            Student stu = en.getValue();  
            System.out.println(stu.getId() + "===" + stu.getName());  
        }  
        System.out.println(map.size());  
    }  
  
    // 把对象转换成JSON字符串  
    public static void objectToStr(Map map) {  
        String str = JSON.toJSONString(map);  
        System.out.println(str);  
    }  
}  

 

使用fastJSON解析HashMap中的数据

原文:http://www.cnblogs.com/mjbrian/p/6829097.html

(0)
(0)
   
举报
评论 一句话评论(0
关于我们 - 联系我们 - 留言反馈 - 联系我们:wmxa8@hotmail.com
© 2014 bubuko.com 版权所有
打开技术之扣,分享程序人生!