JSON and POJO Mutual transfer,list<t> and JSON

JSON and POJO

    Import Com.alibaba.fastjson.JSONObject;    Import Org.slf4j.Logger;    Import Org.slf4j.LoggerFactory;        /** * Object Pojo and JSON cross-transfer * * @author MXN * @create 2018-09-05 14:35 */public class Jsonutil {        public static final Logger Logger = Loggerfactory.getlogger (Jsonutil.class);         /** * JSON to POJO * @param POJO * @param tclass * @param <T> * @return */public static <T> T getObject (String pojo, class<t> tclass) {try {ret            Urn Jsonobject.parseobject (Pojo, Tclass);            } catch (Exception e) {logger.error (Tclass + "Go JSON failed");        } return null;        }/** * Pojo to JSON * @param tresponse * @param <T> * @return * *            public static <T> string Getjson (T tresponse) {string pojo = jsonobject.tojsonstring (tresponse);    return Pojo;    }    } 

List and JSON

import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONArray;import java.util.List;/** * List集合和JSON互转工具类 * @author mxn * @create 2018-09-05 14:45 */public class JsonListUtil {    /**     * List<T> 转 json     * @param ts     * @param <T>     * @return     */    public static <T> String listToJson(List<T> ts){        return JSON.toJSONString(ts);    }    /**     * json 转 List<T>     * @param jsonStr     * @param tClass     * @param <T>     * @return     */    public static <T> List<T> jsonToList(String jsonStr, Class<T> tClass) {        return JSONArray.parseArray(jsonStr, tClass);    }}

Test Pojo and JSON

import org.junit.Test;import org.seckill.entity.Seckill;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * @author mxn * @create 2018-09-05 14:40 */public class JsonUtilTest {    public static final Logger logger = LoggerFactory.getLogger(JsonUtilTest.class);        @Test    public void method1() {        Seckill seckill = new Seckill();        seckill.setName("Iphone X");        String json = JsonUtil.getJson(seckill);        logger.info("JsonUtilTest.method1 info={}",json);        Seckill object = JsonUtil.getObject(json, Seckill.class);        logger.info("JsonUtilTest.method1 info={}",object.getName());    }}

List and JSON

Import Org.junit.before;import org.junit.test;import Org.seckill.entity.seckill;import Org.slf4j.Logger;import Org.slf4j.loggerfactory;import java.util.arraylist;import java.util.list;/** * @author MXN * @create 2018-09-05 14:48 * * public class Jsonlistutiltest {public static final Logger Logger = Loggerfactory.getlogger (Jsonlistutiltest.class)        ;    Private list<seckill> List = new arraylist<seckill> ();    Private String jsonstr; @Before public void Beforemethod () {for (int i = 0; i < 5; i++) {Seckill Seckill = new Seckill ()            ;            Seckill.setname ("iphone" + i);        List.add (Seckill); } jsonstr = "[{\" name\ ": \" iphone 0\ ", \" Number\ ": 0,\" seckillid\ ": 0},{\" name\ ": \" iphone 1\ ", \" Number\ ": 0,\" seckillid\ ": 0},{\" name\ ": \" iphone 2\ ", \" Number\ ": 0,\" seckillid\ ": 0},{\" name\ ": \" iphone 3\ ", \" Number\ ": 0,\" seckillid\ ": 0},{    \ "name\": \ "iphone 4\", \ "Number\": 0,\ "seckillid\": 0}] "; } @Test public void Method () {STring s = Jsonlistutil.listtojson (list);    Logger.info ("Jsonlistutiltest.method info={}", s); } @Test public void Method2 () {list<seckill> seckills = jsonlistutil.jsontolist (Jsonstr, Seckill.class        );        for (Seckill seckill:seckills) {logger.info ("Jsonlistutiltest.method2 info={}", Seckill.getname ()); }    }}

Pojo

Import java.util.date;/** * @author MXN * @create 2018-05-17 15:36 */public class Seckill {private Long seckillid;    private String name;    private int number;    Private Date StartTime;    Private Date EndTime;    Private Date Createtime;    Public long Getseckillid () {return seckillid;    } public void Setseckillid (long seckillid) {this.seckillid = Seckillid;    } public String GetName () {return name;    } public void SetName (String name) {this.name = name;    } public int GetNumber () {return number;    } public void Setnumber (int number) {this.number = number;    Public Date GetStartTime () {return startTime;    } public void Setstarttime (Date startTime) {this.starttime = StartTime;    Public Date Getendtime () {return endTime;    } public void Setendtime (Date endTime) {this.endtime = EndTime;    Public Date Getcreatetime () {return createtime; } public void Setcreatetime (Date createtime) {this.createtime = Createtime;                } @Override Public String toString () {return "seckill{" + "seckillid=" + Seckillid +                ", Name= ' + name + ' \ ' +", number= "+ number +", starttime= "+ StartTime +    ", endtime=" + EndTime + ", createtime=" + Createtime + '} '; }}

JSON and POJO,list<t> and JSON cross-transfer