解析json

import net.sf.json.JSONArray;

import net.sf.json.JSONObject;

Object

String nana="{'username':'a','password':'123'}";

        JSONObject jsonObject = JSONObject.fromObject(nana);

        String name = jsonObject.getString("username");

        System.out.println(name);

Array

String details="[{'username':'a','password':'123'},{'username':'b','password':'321'}]";

        JSONArray array = JSONArray.fromObject(details);

        Object[] obj = new Object[array.size()];

        for(int i = 0; i < array.size(); i++){

            Object object=array.getJSONObject(i).get("username");

            System.out.println(object);

        }