<!--mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.3</version>
<!--jdbc-->
        </dependency>
        <dependency>
		    <groupId>org.springframework.boot</groupId>
		    <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
<!--mysql-->
        <dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>

第二步 配置yml文件

spring:
  datasource:
    username: root
    password: 123456
    #serverTimezone 时区
    url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    driver-class-name: com.mysql.cj.jdbc.Driver

#整合mybatis
mybatis:
  #别名设置
  type-aliases-package: com.muyu.pojo
  #设置xml文件mapper的位置  classpath：代表的是resources
  mapper-locations: classpath:mybatis/mapper/*.xml

@Mapper
public interface UserMapper {
	List<User> queryUserList();

@Service
public class BookServiceImpl implements BookService {

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.muyu.mapper.UserMapper">
  
</mapper>

<insert id="addBook" parameterType="Book">
        insert into bms_book(bname,author,type,inventory) VALUES(#{book.bname},#{book.author},#{book.type},#{book.inventory})
    </insert>