【MyBatis-Plus】SpringBoot+MyBatis+MP & 通用CRUD

1.SpringBoot+MyBatis+MP (可以自动配置

1.创建工程
2.导入依赖
3.编写application.xml
4.编写实体类
5.编写接口
6.编写启动类
7.编写测试用例

2.通用CRUD（增删查改

1.insert()

package cn.itcast.mp.pojo;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
@TableName("tb_user")

public class User {
   

    @TableId(type = IdType.AUTO)//设置id类型为自增
    private Long id;
    private String userName;
    @TableField(select = false) //不加入查询字段
    private String password;
    private String name;
    private Integer age;
    @TableField(value = "email") //解决字段名不一致
    private String mail;

    @TableField(exist = false) //解决该字段在数据库表不存在
    private String address;

    public String getMail() {
   
        return mail;
    }

    public void setMail(String mail) {
   
        this.mail = mail;
    }

    public Long getId() {
   
        return id;
    }

    public void setId(Long id) {
   
        this.id = id;
    }

    public String getUserName() {
   
        return userName;
    }

    public void setUserName(String userName) {
   
        this.userName = userName;
    }

    public String getPassword() {
   
        return password;
    }

    public 
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