1.添加对房间信息的简单操作

2.新增时间格式化的工具类

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

@@ -0,0 +1,18 @@
+package cn.mafangui.hotel.service;
+
+import cn.mafangui.hotel.entity.Room;
+
+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();
+}

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

@@ -0,0 +1,60 @@
+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 addRoom(Room room) {
+        return roomMapper.insert(room);
+    }
+
+    @Override
+    public int deleteRoom(int roomId) {
+        return roomMapper.deleteByPrimaryKey(roomId);
+    }
+
+    @Override
+    public int deleteRoom(String roomNumber) {
+        return roomMapper.deleteByRoomNumber(roomNumber);
+    }
+
+    @Override
+    public int updateRoom(Room room) {
+        return roomMapper.updateByPrimaryKeySelective(room);
+    }
+
+    @Override
+    public Room findById(int roomId) {
+        return roomMapper.selectByPrimaryKey(roomId);
+    }
+
+    @Override
+    public Room findByNumber(String roomNumber) {
+        return roomMapper.selectByRoomNumber(roomNumber);
+    }
+
+    @Override
+    public List<Room> findByStatus(String status) {
+        return roomMapper.selectByStatus(status);
+    }
+
+    @Override
+    public List<Room> findByType(String typeName) {
+        return roomMapper.selectByType(typeName);
+    }
+
+    @Override
+    public List<Room> findAll() {
+        return roomMapper.selectAllRoom();
+    }
+}