springboot中各模块间实现bean之间互相调用（service以及自定义的bean）
https://blog.csdn.net/qq_29477175/article/details/122827446?ops_request_misc=&request_id=&biz_id=102&utm_term=springboot%E5%A4%9A%E6%A8%A1%E5%9D%97%E4%B9%8B%E9%97%B4%E5%A6%82%E4%BD%95%E8%B0%83%E7%94%A8&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-9-122827446.142^v102^pc_search_result_base3&spm=1018.2226.3001.4187
