使用Java获取Json中的数据简单示例

String jsonString = "{'name':'卢本伟','age':24}";
JSONObject json = JSON.parseObject(jsonString);
String name = json.getString("name");
int age = json.getIntValue("age");
System.out.println(name);
System.out.println(age);

String jsonString = "{'Hero':{'name':'Fizz','position':'Mid','charactor':'killer'}}";
JSONObject jsonObject = JSON.parseObject(jsonString);
JSONObject Hero = jsonObject.getJSONObject("Hero");
String name = Hero.getString("name");
String position = Hero.getString("position");
String charactor = Hero.getString("charactor");
System.out.println(name + "..." + position + "..." + charactor);

String jsonString = "{'nickNames':['五五开','芦苇','white']}";
JSONObject jsonObject = JSON.parseObject(jsonString);
JSONArray nickNames = jsonObject.getJSONArray("nickNames");
for(Object nickName:nickNames){
    System.out.println(nickName);
}

String jsonString = "{'Honors':[{'year':2011,'name':'TGA总决赛冠军'},{'year':2013,'name':'S3全球总决赛中国区冠军'},{'year':2013,'name':'S3全球总决赛亚军'}]}";
JSONObject jsonObject = JSON.parseObject(jsonString);
JSONArray honors = jsonObject.getJSONArray("Honors");
for(int i=0; i<honors.size(); i++){
    JSONObject honor = (JSONObject) honors.get(i);
    int year = honor.getIntValue("year");
    String name = honor.getString("name");
    System.out.println(year + "..." + name);
}

public class JsonExtracter {
    public static void main(String[] args) {
        String s = "{\"name\":\"a\",\"family\":[\"张三\",\"李四\"]}";
        JSONObject jsonObject = JSON.parseObject(s);

        //注意：family中的内容带有中括号[]，所以要转化为JSONArray类型的对象
        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);
        }
    }