用户实现类/用户服务接口(测试)

IDEA/src/main/java/com/example/api/service/UserService.java

@@ -0,0 +1,4 @@
+package com.example.api.service;
+
+public interface UserService {
+}

IDEA/src/main/java/com/example/api/service/impl/UserServiceImpl.java

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+package com.example.api.service.impl;
+
+import com.example.api.service.UserService;
+import org.springframework.stereotype.Service;
+
+@Service
+public class UserServiceImpl implements UserService {
+
+}