在學習使用 mybatis-plus 時，遇到一個奇怪的異常 如 代碼一：
代碼一：
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2019-07-17 09:16:28.739 ERROR 9800 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: Field baseMapper in com.baomidou.mybatisplus.extension.service.impl.ServiceImpl required a single bean, but 3 were found: - miguBusiHisMapper: defined in file [D:\workspaceIdea\ywjc-refactor\target\classes\com\guoll\modules\miguProject\mapper\MiguBusiHisMapper.class] - miguBusiInfoMapper: defined in file [D:\workspaceIdea\ywjc-refactor\target\classes\com\guoll\modules\miguProject\mapper\MiguBusiInfoMapper.class] - sysUserMapper: defined in file [D:\workspaceIdea\ywjc-refactor\target\classes\com\guoll\modules\sysmanage\mapper\SysUserMapper.class] Action: Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed Process finished with exit code 1
該錯誤怎么解決，求大佬指點