springboot整合mybatis

1.配置文件版

1.配置数据源

spring.datasource.username=root
spring.datasource.password=fuck
spring.datasource.url=jdbc:mysql://localhost:3306/mybatis
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

2.mapper文件的位置

mybatis.mapper-locations=classpath:/mappers/*.xml

3.指定起别名的类

mybatis.type-aliases-package=com.entities

4.在主程序中扫描Dao接口

@SpringBootApplication
@MapperScan("com.mapper")
public class HelloWorldMainApplication {
    public static void main(String[] args) {
        SpringApplication.run(HelloWorldMainApplication.class,args);
    }
}

2.注解版

1.配置数据源

spring.datasource.username=root
spring.datasource.password=fuck
spring.datasource.url=jdbc:mysql://localhost:3306/mybatis
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

2.指定起别名的类

mybatis.type-aliases-package=com.entities

3.在主程序中扫描Dao接口

@SpringBootApplication
@MapperScan("com.mapper")
public class HelloWorldMainApplication {
    public static void main(String[] args) {
        SpringApplication.run(HelloWorldMainApplication.class,args);
    }
}

4.在Dao接口上编写sql语句

 @Select("select *  from person")
    public List<Person> getAll();