一、问题

使用了Mybatis generator自动生成的bean和mapper
写完service层和controller层后运行报错A component required a bean of type 'XXService' that could not found

二、解决方式

在springBoot主入口函数Application里添加注释@MapperScan("com.SF.data.dao")
括号里为自己的mapper路径

@SpringBootApplication
@MapperScan("com.SF.data.dao")
public class Shoppingweb01Application {public static void main(String[] args) {SpringApplication.run(Shoppingweb01Application.class, args);}}

三、产生原因

mapper文件位置和service文件位置不是父子层关系（同级）导致扫描时没有将sercive注入

四、一些试错

使用过@ComponentScan来进行包扫描、运行时确实不会报错了但数据出不来
可能是springboot在容器里找到了此组件但不知道交给谁去做解析

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【已解决】A component required a bean of type ‘XXService‘ that could not found

一、问题

二、解决方式

三、产生原因

四、一些试错

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