SpringBoot出错:Consider defining a bean of type ‘com.mapper.UserMapper‘

SpringBoot出错:Consider defining a bean of type ‘com.mapper.UserMapper’

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com.service.impl中的userMapper字段。UserServiceImpl需要一个类型为“com.mapper”的bean。找不到UserMapper。

原因:传统ssm整合需要开启扫描mapper包,而你注入@Service没有扫描到mapper包

解决办法在控制类加@MapperScan("")

@SpringBootApplication
@MapperScan(basePackages = "com.gec.mapper" )
public class UserApp
{
    public static void main( String[] args )
    {

        SpringApplication.run(UserApp.class,args);
//        System.out.println( "Hello World!" );
    }
}