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JSON数据与list集合之间的转换及使用

捡历史的小木板 2022-03-22 阅读 56
javajson

1、将list集合转为JSON数据字符串

List<User> userinfoList  = new  ArrayList<User>();
		userinfoList .add("hello");
		userinfoList .add("world");
String tmp = JsonUtil.toJson(userinfoList);

2、将JSON数据转为list集合

String tmp =  '[{"name":"六子","sex":"女","Age":20,"hobby":["化妆","美术","甄嬛传","吃鸡"],"normal":true},{"name":"会计","sex":"男","Age":21,"hobby":["吃鸡","吃鸡"],"normal":false}]';
List<User> userinfoList = JSONArray.parseArray(tmp, User.class);

3、遍历集合转为JSON字符串

for (int j = 0; j < userinfoList.size(); j++) {
	User userinfo= userinfoList.get(j);
	tmp = JsonUtil.toJson(userinfo);
	System.out.println(tmp );	
}
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