1.1.1 给User实体类添加校验

package com.geji.pojo;



import com.fasterxml.jackson.annotation.JsonIgnore;
import jakarta.validation.constraints.Email;
import jakarta.validation.constraints.NotEmpty;
import jakarta.validation.constraints.NotNull;
import jakarta.validation.constraints.Pattern;
import lombok.Data;

import java.time.LocalDateTime;
//lombok  在编译阶段,为实体类自动生成setter  getter toString
// pom文件中引入依赖   在实体类上添加注解
@Data
public class User {
    @NotNull
    private Integer id;//主键ID
    private String username;//用户名
    @JsonIgnore//让springmvc把当前对象转换成json字符串的时候,忽略password,最终的json字符串中就没有password这个属性了
    private String password;//密码


    @NotEmpty
    @Pattern(regexp = "^\\S{1,10}$")
    private String nickname;//昵称

    @NotEmpty
    @Email
    private String email;//邮箱
    private String userPic;//用户头像地址
    private LocalDateTime createTime;//创建时间
    private LocalDateTime updateTime;//更新时间
}

1.1.1 UserController中添加update方法

    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user) {
        userService.update(user);
        return Result.success();
    }

1.1.2 UserService中添加update接口

package com.geji.service;

import com.geji.pojo.User;

public interface UserService {
    //根据用户名查找用户
    User findByUserName(String username);

    //根据用户名和密码注册
    void register(String username, String password);

    void update(User user);
}

1.1.3 UserServiceImpl中添加update实现类

    @Override
    public void update(User user) {
        user.setUpdateTime(LocalDateTime.now());
        userMapper.update(user);
    }

1.1.4 UserMapper中添加update方法

package com.geji.mapper;

import com.geji.pojo.User;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

@Mapper
public interface UserMapper {
    //根据用户名查询用户
    @Select("select * from user where username=#{username}")
    User findByUserName(String username);

    //添加
    @Insert("insert into user(username,password,create_time,update_time)" +
            " values(#{username},#{password},now(),now())")
    void add(String username, String password);

    @Update("update user set nickname=#{nickname},email=#{email},update_time=#{updateTime} where id=#{id}")
    void update(User user);

}

1.1.5 使用postman测试