public class JsonExtracter {

    public static void main(String[] args) {

        String s = "{\"name\":\"a\",\"family\":[\"張三\",\"李四\"]}";
JSONObject jsonObject = JSON.parseObject(s);
//注意：family中的內容帶有中括號[]，所以要轉化為JSONArray型別的物件
JSONArray family = jsonObject.getJSONArray("family");
        for (int 
 
i = 0; i < family.size(); i++) {
            //提取出family中的所有
String s1 = (String) family.get(i);
System.out.println("currentFamily:" + s1);
}
    }