List与JSONArray互转

1.List转JSONArray

List<T> list = new ArrayList<T>();
JSONArray array= JSONArray.parseArray(JSON.toJSONString(list))；

2.JSONArray转List

JSONArray array = new JSONArray();
List<Article> list = JSONObject.parseArray(array.toJSONString(),  Article.class);

3.String转JSONArray

String str = "[{name:leixing,age:22,sex:1},{name:luo,age:18,sex:male}]";
JSONArray arr= JSONArray.parseArray(str);