Consider defining a bean of type 'com.yxf.demo.dao.IUserMapperDao' in your configuration.

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Consider defining a bean of type 'com.yxf.demo.dao.IUserMapperDao' in your configuration.

Java报错：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2019-07-14 01:11:16.132 ERROR 4216 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: Field userMapper in com.yxf.demo.service.impl.UserServiceImpl required a bean of type 'com.yxf.demo.dao.IUserMapperDao' that could not be found. The injection point has the following annotations: - @org.springframework.beans.factory.annotation.Autowired(required=true) Action: Consider defining a bean of type 'com.yxf.demo.dao.IUserMapperDao' in your configuration. Process finished with exit code 1

原因;注入bean失败。Mybatis的映射配置文件(com.yxf.demo.UserMapper.xml)必须和dao的包结构相同（com.yxf.demo.IUserDao.java）

三种解决方法：

1.调整目录结构

2.加@Mapper注解

import com.yxf.demo.entity.User; import org.apache.ibatis.annotations.Mapper; import org.springframework.stereotype.Repository; @Repository @Mapper public interface IUserMapperDao { int addUserInfo(User user); }

3.DemoApplication启动类加@MapperScan(value = "com.yxf.demo.dao")

package com.yxf.demo; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @MapperScan(value = "com.yxf.demo.dao") public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }

注意：必要时可两者一起用，等程序运行过一次后，再调试了、看去掉哪个程序可正常运行

本文标签： amptypedefiningbeanIUserMapperDao