Field userMapper in org.sang.service.UserService required a bean of type 'org.sang.mapper.UserMapper' that could not be found.

[isSmallStudent]

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 2018-08-10 14:35:47.147 ERROR 58216 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :

---

APPLICATION FAILED TO START

---

Description:

Field userMapper in org.sang.service.UserService required a bean of type 'org.sang.mapper.UserMapper' that could not be found.

Action:

Consider defining a bean of type 'org.sang.mapper.UserMapper' in your configuration.

Process finished with exit code 1

[Ozal220]

在application类上添加注解：@MapperScan(basePackages = "org.sang.mapper")

[zuoee]

下载下来就改了下配置文件，报错，刚学习spring boot，什么原因报错？

[zuoee]

需要在启动类的@EnableAutoConfiguration或@SpringBootApplication中添加exclude = {DataSourceAutoConfiguration.class}，排除此类的autoconfig。启动以后就可以正常运行。

以上，网搜的，改好后运行，也报了题主同样的错误，但是加了楼上的注解，错误更多了。。。

package org.sang;

import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration; import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class}) @EnableScheduling//开启定时任务支持 @MapperScan(basePackages = "org.sang.mapper") public class BlogserverApplication {

public static void main(String[] args) {
    SpringApplication.run(BlogserverApplication.class, args);
}

}

[zuoee]

resources文件夹右击 mark directory as resources root，看了之前关闭的问题，IEDEA这样操作解决了。

[wanxu2019]

@zuoee 我也遇到这个问题，发现是因为资源文件没被打包，从IDE层面去设置不如从代码层面去修改，我的解决方案是：在pom文件标签内增加一个资源节点： <resource> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> </resource>

[zau11berer]

更新mybatis框架到2.0.0之后，项目即可以运行

尝试过close上的做法，没有作用，而且看文件夹格式和pom文件，resource Root作者应该是已经修改过了