1、准备实体类

package com.shenmazong.demotimejson.entity;

import com.fasterxml.jackson.annotation.JsonFormat;
import org.springframework.format.annotation.DateTimeFormat;

import java.util.Date;

/**
 * @author 军哥
 * @version 1.0
 * @description: 测试实体类
 * @date 2021/9/1 19:35
 */


public class DataVo {

    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date date;

    public Date getDate() {
        return date;
    }

    public void setDate(Date date) {
        this.date = date;
    }
}

2、定义congtroller

package com.shenmazong.demotimejson.entity;

import com.fasterxml.jackson.annotation.JsonFormat;
import org.springframework.format.annotation.DateTimeFormat;

import java.util.Date;

/**
 * @author 军哥
 * @version 1.0
 * @description: 测试实体类
 * @date 2021/9/1 19:35
 */


public class DataVo {

    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private Date date;

    public Date getDate() {
        return date;
    }

    public void setDate(Date date) {
        this.date = date;
    }
}

3、postman测试

4、日志输出

date1:Thu Sep 02 05:03:06 CST 2021
date2:2021-09-02 05:03:06