springboot pojo对象日期属性的问题

@JsonFormat(timezone = DateUtils.TIMEZONE, pattern = DateUtils.DATE_TIME_FORMATE)
private Date date;

package com.xxx.firstboot.domain;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class User {
    private int id;
    private String username = "";//设置默认值
    private String password = "";//设置默认值
}

    @ApiOperation("添加用户/测试POJO默认值")
    @RequestMapping(value="/addUserWithNoParam",method=RequestMethod.POST)
    public boolean addUserWithNoParam() {
        return userService.addUserWithNoParam(new User());//只新建，不设值
    }

    public boolean addUserWithNoParam(User user){
        return userDao.insertUserWithUserParam(user)>0?true:false;
    } 

    public int insertUserWithUserParam(User user){
        return userMapper.insertUserWithUserParam(user);
    }

    @Insert("INSERT INTO tb_user(username, password) VALUES(#{username},#{password})")
    public int insertUserWithUserParam(User user);