@Configuration
//注意，由于MapperScannerConfigurer执行的比较早，所以必须有下面的注解
//MyBatisConfig.class是一个包含了SqlSessionFactory配置的类
@AutoConfigureAfter(MyBatisConfig.class)
public class MyBatisMapperScannerConfig {

    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer() {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
        mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
        mapperScannerConfigurer.setBasePackage("tk.mybatis.springboot.mapper");
        Properties properties = new Properties();
        properties.setProperty("mappers", "tk.mybatis.springboot.util.MyMapper");
        properties.setProperty("notEmpty", "false");
        properties.setProperty("IDENTITY", "MYSQL");
        //这里使用的通用Mapper的MapperScannerConfigurer，所有有下面这个方法
        mapperScannerConfigurer.setProperties(properties);
        return mapperScannerConfigurer;
    }

}