diff --git a/java/src/main/java/com/hzu/bookingsystem/service/impl/UserCourseServiceImpl.java b/java/src/main/java/com/hzu/bookingsystem/service/impl/UserCourseServiceImpl.java
new file mode 100644
index 0000000..5f4505b
--- /dev/null
+++ b/java/src/main/java/com/hzu/bookingsystem/service/impl/UserCourseServiceImpl.java
@@ -0,0 +1,51 @@
+package com.hzu.bookingsystem.service.impl;
+
+
+import com.hzu.bookingsystem.bean.UserCourseBean;
+import com.hzu.bookingsystem.repository.UserCourseRepository;
+import com.hzu.bookingsystem.service.UserCourseService;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import javax.annotation.Resource;
+import java.util.List;
+
+@Service
+public class UserCourseServiceImpl implements UserCourseService{
+
+    @Resource
+    private UserCourseRepository usercourseRepository;
+
+    @Override
+    public UserCourseBean add(UserCourseBean usercourse) {
+        return usercourseRepository.save(usercourse);
+    }
+
+    @Override
+    public List<UserCourseBean> findAll() {
+        return usercourseRepository.findAll();
+    }
+
+    @Override
+    public List<UserCourseBean> findAllByUidAndYearAndSemester(Integer u_id,String year,Integer semester)
+    {
+        return usercourseRepository.findByUIdAndYearAndSemester(u_id,year,semester);
+    }
+
+   @Override
+    public UserCourseBean findById(Integer uc_id) {
+        return usercourseRepository.findByUcId(uc_id);
+    }
+
+    @Override
+    public UserCourseBean update(UserCourseBean usercourse) {
+        return usercourseRepository.save(usercourse);
+    }
+
+    @Override
+    @Transactional
+    public void deleteByUcId(Integer uc_id) {
+        usercourseRepository.deleteByUcId(uc_id);
+    }
+
+}