SpringBoot配置MyBatis-Plus实现增删查改

		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>2.2.0</version>
		</dependency>
		<!--MySQL数据库连接驱动-->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus-boot-starter</artifactId>
			<version>3.4.1</version>
		</dependency>

#数据库连接池设置
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=123456
 
#mybatis的相关配置
mybatis.mapper-locations=classpath:mapper/*.xml

package com.entity;
 
import com.baomidou.mybatisplus.annotation.*;
import lombok.Data;
 
/**
 * 用户信息实体类
 */
@Data
@TableName("users")
public class UserEntity {
    /**
     * 用户名
     */
    @TableField("username")
    @TableId
    private String username;
    /**
     * 昵称
     */
    @TableField("pickname")
    private String pickname;
    /**
     * 密码
     */
    @TableField("password")
    private String password;
    /**
     * 性别
     */
    @TableField("sex")
    private String sex;
}

package com.mapper;
 
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.entity.UserEntity;
import org.apache.ibatis.annotations.Mapper;
 
/**
 * 用户信息dao层
 */
@Mapper
public interface UserMapper extends BaseMapper<UserEntity> {
}

package com.service;
 
import com.baomidou.mybatisplus.extension.service.IService;
import com.entity.UserEntity;
 
public interface UserService extends IService<UserEntity> {
}

package com.service.impl;
 
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.entity.UserEntity;
import com.mapper.UserMapper;
import com.service.UserService;
import org.springframework.stereotype.Service;
 
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper,UserEntity> implements UserService  {
}

package com.controller;
 
import com.entity.UserEntity;
import com.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
 
import java.util.List;
 
@RestController
public class UserController {
    @Autowired
    private UserService userService;
 
    /**
     * 获取所有用户数据
     *
     * @return
     */
    @GetMapping("/getList")
    public List<UserEntity> getList() {
        return userService.list();
    }
 
    /**
     * 插入用户数据
     *
     * @return
     */
    @PostMapping("/create")
    public boolean create(@RequestBody UserEntity userEntity) {
        return userService.save(userEntity);
    }
 
    /**
     * 更新用户数据
     *
     * @return
     */
    @PutMapping("/update")
    public boolean update(@RequestBody UserEntity userEntity) {
        return userService.updateById(userEntity);
    }
 
    /**
     * 删除用户数据
     *
     * @return
     */
    @DeleteMapping("/delete/{username}")
    public boolean delete(@PathVariable("username") String username) {
        return userService.removeById(username);
    }
}