Description: Field ud in com.yjj.service.impl.UserServiceImpl required a bean of type 'com.y...

這是在用springboot時遇到的error

Description:

Field ud in com.yjj.service.impl.UserServiceImpl required a bean of type 'com.yjj.dao.UserDao' that could not be found.

Action:

Consider defining a bean of type 'com.yjj.dao.UserDao' in your configuration.

緣由：

我找到的一種緣由是在mappers文件夾下的mapper.xml文件沒有掃到com.yjj.dao這個包

因此要在Application(啓動類)上加上

@MapperScan("com.yjj.dao")註解

代碼以下：

package com.yjj.bootdemo01; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.ComponentScan; @SpringBootApplication @ComponentScan(basePackages = {"com.yjj.dao","com.yjj.service","com.yjj.controller"}) @MapperScan("com.yjj.dao") public class Bootdemo01Application { public static void main(String[] args) { SpringApplication.run(Bootdemo01Application.class, args); } }

 

原文出處：https://www.cnblogs.com/leafarmyarmy/p/10564509.html