Two implementation methods of spring boot scan mapper interface class

1. Method 1: use annotation @ mapper

Add annotation on all mapper interfaces @ mapper; spring boot starts annotation auto scanning.

The following is the Default scan configuration of spring boot. When auto scan is started, all custom beans will be automatically scanned

2. Method 2: use annotation @ mapperscan

Add the annotation @ mapperscan to the springboot startup class to mark the package path of Dao. Once and for all, recommended!!

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@MapperScan(basePackages = {""})
public class MpServiceProviderApplication {
    public static void main(String[] args) { .class, args);


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