循环依赖问题

出现场景

== 两个Service互相注入（字段注入或构造器注入）或者复杂的Bean之间的相互引用==

1.在记录service中注入了课表service

@Service
@RequiredArgsConstructor
public class LearningRecordServiceImpl extends ServiceImpl<LearningRecordMapper, LearningRecord> implements ILearningRecordService {


    final ILearningLessonService lessonService;

    final CourseClient courseClient;
}

2.又在课表service中注入了记录service

@Service
@RequiredArgsConstructor
public class LearningLessonServiceImpl extends ServiceImpl<LearningLessonMapper, LearningLesson> implements ILearningLessonService {

    final LearningRecordService  learningRecordService ;
}

解决方案

1. 在其中的一个service中调用对方的mapper进行业务查询。就不要都使用对方的service，导致相互调用循环依赖。