Field service in com.sinoyd.base.controller.BaseController required a single bean, but 20 were found
參考博文 Mapper接口應添加@Mapper注解 service類應該添加@Service注解 ...
原文：Field baseMapper in com.baomidou.mybatisplus.extension.service.impl.ServiceImpl required a single bean, but xx were found:
在學習使用 mybatis plus 時，遇到一個奇怪的異常 如 代碼一： 代碼一： 該錯誤怎么解決，求大佬指點 ...
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【記錄】Field required a single bean, but 2 were found:
in com.alibaba.xxx required a single bean, but 2 were found: ...
Field in required a single bean, but 2 were found:
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Field amqpTemplate in * required a single bean, but 3 were found:
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MyBatis Plus:No qualifying bean of type 'com.baomidou.mybatisplus.mapper.BaseMapper
' available: expected single matching bean but found 4
'com.baomidou.mybatisplus.mapper.BaseMapper<?>' available: expecte ...
Field configService in com.rr.web.controller.common.CaptchaController required a single bean, but 2 were found: SPRING-BOOT 啟動 錯誤
如圖所示 我用的是mybatis-plus. + mybatis 問題所在就是包掃描 @MapperScan(basePackages = "com.rr") 問題解決 精確包掃描的范圍 @MapperScan(basePackages = "com.rr.*.mapper") ...
Field adminMapper in com.course.service.impl.AdminServiceImpl required a bean of type 'com.course.mapper.AdminMapper' that could not be found
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解決：Field xxMapper in xx.service.impl.xxServiceImpl required a bean of type 'xx.mapper.xxMapper'
1、啟動 SpringBoot項目報錯，使用的是Springboot、Spring、Mybatis連接Mysql數據庫，啟動SpringBoot項目報錯，錯誤如下所示： 2. 報錯原因 ...