import com.alibaba.fastjson.JSON;

import com.alibaba.fastjson.serializer.SerializeFilter;

import com.alibaba.fastjson.serializer.SerializerFeature;

public class Util{

class Person{

private String userName;

private Long userId;

private Date createTime;

}

public void testUtil(){

Person person = new Person();

person.setUserName("yM");

person.setUserId("12");

person.setCreateTime(new Date());

List lists = new ArrayList();

lists.add(person );

SerializeConfig config = new SerializeConfig();

config.setPropertyNamingStrategy(PropertyNamingStrategy.SnakeCase);

//使用alibaba 的包

//config 是设置峰格式key转换成下滑线

//DEFAULT_GENERATE_FEATURE 时间格式化 (每次在json转换后就是时间戳了)

String st = JSON.toJSONString(lists , config ,(SerializeFilter[])null,"yyyy-MM-dd HH:mm:ss",DEFAULT_GENERATE_FEATURE,SerializerFeature.WriteDateUseDateFormat);

System.out.pringln(st):

//结果：[{"user_name":"yM","user_id":12,"create_time":"2023:04:27 11:27:00"}]

}

}

com.alibaba

druid

1.2.83

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