//JSONObject

public static void main(String[] args) {

String jsonObjectStr = "{'name':'张三','age':30}";

JSONObject jsonObject = new JSONObject(jsonObjectStr);

System.out.println("name:"+jsonObject.get("name")+",age:"+jsonObject.get("age"));

}

//JSONArray

public static void main(String[] args) {

String jsonArrayStr = "[{'name':'张三'},{'name':'李四'}]";

JSONArray jsonArray = new JSONArray(jsonArrayStr);

for(int i= 0;i<jsonArray.length();i++){

JSONObject jsonObject = jsonArray.getJSONObject(i);

System.out.println(jsonObject.get("name"));

}

}