springboot启动扫描不到dao层接口的解决方案

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScans;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@EnableSwagger2
@SpringBootApplication
@MapperScan("com.imooc2.product.**.dao")
public class ProductApplication  {//extends SpringBootServletInitializer
    public static void main(String[] args) {
        SpringApplication.run(ProductApplication.class, args);
    }
}

@ComponentScan(basePackages = {“com.imooc2.product.product”, “com.imooc2.product.category”})

@SpringBootApplication(scanBasePackages = {“com.imooc2.product.product”, “com.imooc2.product.category”})

@SpringBootApplication(scanBasePackages = {"com.imooc2.product","com.imooc2.product.**.dao"})//二选一
@ComponentScan(basePackages = {"com.imooc2.product.product", "com.imooc2.product.category"})//二选一
@MapperScan("com.imooc2.product.**.dao")
public class ProductApplication  {
    public static void main(String[] args) {
        SpringApplication.run(ProductApplication.class, args);
    }
}