完成RoomTypeService类编写，通过单元测试

src/main/java/cn/mafangui/hotel/service/RoomTypeService.java

@@ -1,20 +1,20 @@
 package cn.mafangui.hotel.service;
 
 import cn.mafangui.hotel.entity.RoomType;
+import org.springframework.stereotype.Service;
 
 import java.util.List;
 
+@Service
 public interface RoomTypeService {
 
-    int addRoomType(RoomType roomType);
+    int insert(RoomType roomType);
 
-    int delRoomType(RoomType roomType);
+    int delete(int typeId);
 
-    int delById(int typeId);
+    int update(RoomType roomType);
 
-    int updateRoomType(RoomType roomType);
-
-    RoomType selectByName(RoomType roomType);
+    RoomType selectByName(String roomType);
 
     RoomType selectById(int typeId);
 

src/main/java/cn/mafangui/hotel/service/impl/RoomTypeServiceImpl.java

@@ -0,0 +1,46 @@
+package cn.mafangui.hotel.service.impl;
+
+
+import cn.mafangui.hotel.entity.RoomType;
+import cn.mafangui.hotel.mapper.RoomTypeMapper;
+import cn.mafangui.hotel.service.RoomTypeService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class RoomTypeServiceImpl implements RoomTypeService {
+    @Autowired
+    private RoomTypeMapper roomTypeMapper;
+
+    @Override
+    public int insert(RoomType roomType) {
+        return roomTypeMapper.insertSelective(roomType);
+    }
+
+    @Override
+    public int delete(int typeId) {
+        return roomTypeMapper.deleteByPrimaryKey(typeId);
+    }
+
+    @Override
+    public int update(RoomType roomType) {
+        return roomTypeMapper.updateByPrimaryKeySelective(roomType);
+    }
+
+    @Override
+    public RoomType selectByName(String roomType) {
+        return roomTypeMapper.selectByRoomType(roomType);
+    }
+
+    @Override
+    public RoomType selectById(int typeId) {
+        return roomTypeMapper.selectByPrimaryKey(typeId);
+    }
+
+    @Override
+    public List<RoomType> findAllType() {
+        return roomTypeMapper.selectAll();
+    }
+}