fast json

json字符串 转 map/array

map: public static JSONObject parseObject(String text)
arary: public static JSONArray parseArray(String text)

String arrStr = "[{"addr":"Pudong Shanghai","age":18,"name":"jack"},{"addr":"JingAn Shanghai","age":18,"name":"rose"}]";
String objStr = "{"addr":"Pudong Shanghai","age":18,"name":"jack"}";
JSONObject jsonObject = JSON.parseObject(objStr);
JSONArray jsonArr = JSON.parseArray(arrStr);

字符串 转 对象

String jsonStr = "{"addr":"Pudong Shanghai","age":18,"name":"jack"}";
Person per = JSON.parseObject(jsonStr, Person.class);
System.out.println(per);

object、数组、map 转 json字符串

public static String toJSONString(Object object)

 Person jack = new Person("jack", 18, "Pudong Shanghai");
 String str = JSON.toJSONString(jack);