Field baseMapper in com.baomidou.mybatisplus.extension.service.impl.ServiceImpl required a single bean, but 2 were found:
若找不到很明显的错误位置 那么
大多数情况是循环注入导致的
本次出现此错误是zz-paassingle项目中
BusinessModelClientImpl中注入了IZzModelAppsService
IZzModelAppsService中注入了ProcessClient
ProcessClientImpl中注入了BusinessModelClient
导致循环注入引起该错误

在@Autowired下添加@Lazy即可解决 如下：