完成RoomService类编写，通过单元测试

src/main/java/cn/mafangui/hotel/entity/Room.java

@@ -102,4 +102,20 @@ public class Room {
     public void setUpdateTime(Date updateTime) {
         this.updateTime = updateTime;
     }
+
+    @Override
+    public String toString() {
+        return "Room{" +
+                "roomId=" + roomId +
+                ", roomNumber='" + roomNumber + '\'' +
+                ", typeId=" + typeId +
+                ", roomType='" + roomType + '\'' +
+                ", roomPrice=" + roomPrice +
+                ", roomDiscount=" + roomDiscount +
+                ", roomStatus=" + roomStatus +
+                ", remark='" + remark + '\'' +
+                ", createTime=" + createTime +
+                ", updateTime=" + updateTime +
+                '}';
+    }
 }

src/main/java/cn/mafangui/hotel/mapper/RoomMapper.java

@@ -1,7 +1,10 @@
 package cn.mafangui.hotel.mapper;
 
 import cn.mafangui.hotel.entity.Room;
+import org.springframework.stereotype.Component;
 
+import java.util.List;
+@Component
 public interface RoomMapper {
     int deleteByPrimaryKey(Integer roomId);
 
@@ -14,4 +17,10 @@ public interface RoomMapper {
     int updateByPrimaryKeySelective(Room record);
 
     int updateByPrimaryKey(Room record);
+
+    List<Room> selectByType(Integer typeId);
+
+    List<Room> selectByStatus(Integer roomStatus);
+
+    List<Room> selectAll();
 }

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

@@ -6,13 +6,11 @@ import java.util.List;
 
 
 public interface RoomService {
-    int addRoom(Room room);
-    int deleteRoom(int roomId);
-    int deleteRoom(String roomNumber);
-    int updateRoom(Room room);
-    Room findById(int roomId);
-    Room findByNumber(String roomNumber);
-    List<Room> findByStatus(String status);
-    List<Room> findByType(String typeName);
-    List<Room> findAll();
+    int insert(Room room);
+    int delete(int roomId);
+    int update(Room room);
+    Room selectById(int roomId);
+    List<Room> selectByStatus(int roomStatus);
+    List<Room> selectByType(int typeId);
+    List<Room> selectAll();
 }

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

@@ -0,0 +1,50 @@
+package cn.mafangui.hotel.service.impl;
+
+import cn.mafangui.hotel.entity.Room;
+import cn.mafangui.hotel.mapper.RoomMapper;
+import cn.mafangui.hotel.service.RoomService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class RoomServiceImpl implements RoomService {
+    @Autowired
+    private RoomMapper roomMapper;
+
+    @Override
+    public int insert(Room room) {
+        return roomMapper.insertSelective(room);
+    }
+
+    @Override
+    public int delete(int roomId) {
+        return roomMapper.deleteByPrimaryKey(roomId);
+    }
+
+    @Override
+    public int update(Room room) {
+        return roomMapper.updateByPrimaryKeySelective(room);
+    }
+
+    @Override
+    public Room selectById(int roomId) {
+        return roomMapper.selectByPrimaryKey(roomId);
+    }
+
+    @Override
+    public List<Room> selectByStatus(int roomStatus) {
+        return roomMapper.selectByStatus(roomStatus);
+    }
+
+    @Override
+    public List<Room> selectByType(int typeId) {
+        return roomMapper.selectByType(typeId);
+    }
+
+    @Override
+    public List<Room> selectAll() {
+        return roomMapper.selectAll();
+    }
+}