fastjson组件的使用

package test;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.parser.Feature;
import com.alibaba.fastjson.serializer.SerializerFeature;

public class TestFastjson {
    public static void main(String[] args) {
        String json = "{\"ts\":\"123\",\"table\":\"TEST\",\"after\":{\"id\":\"1122\",\"name\":\"hello\",\"score\":[\"10\",\"20\",\"30\"]}}";
        //1.判断是否是json格式
        isJson(json);
        //json格式正确

        //2.美化展示json数据
        pretty(json);
//        {
//            "ts":"123",
//                "table":"TEST",
//                "after":{
//            "id":"1122",
//                    "name":"hello",
//                    "score":[
//                        "10",
//                        "20",
//                        "30"
//		            ]
//            }
//        }

        //3.解析json对象
        JSONObject jo = JSON.parseObject(json, Feature.OrderedField);
        System.out.println(jo);
        //{"ts":"123","table":"TEST","after":{"id":"1122","name":"hello","score":["10","20","30"]}}

        //4.解析json元素
        System.out.println(jo.getString("table"));
        //TEST
        System.out.println(jo.getString("after"));
        //{"id":"1122","name":"hello","score":["10","20","30"]}
    }


    public static void isJson(String json) {
        try {
            JSON.toJSONString(JSON.parseObject(json, Feature.OrderedField), true);
            System.out.println("json格式正确");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("json格式不规范: " + json);
        }

    }


    public static void pretty(String json) {
        JSONObject jo = JSON.parseObject(json);
        System.out.println(JSON.toJSONString(JSON.parseObject(json, Feature.OrderedField), true));
    }
}