src/main/java/com/campus/water/controller/web/DeviceStatusController.java

@@ -100,24 +100,20 @@ public class DeviceStatusController {
     }
 
     @GetMapping("/by-status")
-    @Operation(summary = "按状态查询设备", description = "根据状态查询设备列表")
+    @Operation(summary = "按状态查询设备", description = "根据状态和设备类型查询设备列表")
     public ResponseEntity<ResultVO<List<Device>>> getDevicesByStatus(
-    @RequestParam String status,
-    @RequestParam(required = false) String areaId,
-    @RequestParam(required = false) String deviceType) {
-
-    // 添加默认值处理
-    if (deviceType == null || deviceType.isEmpty()) {
-        deviceType = "water_maker"; // 默认值
-    }
+            @RequestParam String status,
+            @RequestParam(required = false) String areaId,
+            @RequestParam(required = false) String deviceType) { // 保留设备类型参数，去除默认值
 
-    try {
-        List<Device> devices = deviceStatusService.getDevicesByStatus(status, areaId, deviceType);
-        return ResponseEntity.ok(ResultVO.success(devices));
-    } catch (Exception e) {
-        return ResponseEntity.ok(ResultVO.error(500, "查询设备失败: " + e.getMessage()));
+        try {
+            // 调用服务层方法时传递所有参数（包括可能为null的deviceType）
+            List<Device> devices = deviceStatusService.getDevicesByStatus(status, areaId, deviceType);
+            return ResponseEntity.ok(ResultVO.success(devices));
+        } catch (Exception e) {
+            return ResponseEntity.ok(ResultVO.error(500, "查询设备失败: " + e.getMessage()));
+        }
     }
-}
 
 
     @GetMapping("/status-count")

src/main/java/com/campus/water/mapper/DeviceRepository.java

@@ -41,4 +41,7 @@ public interface DeviceRepository extends JpaRepository<Device, String> {
 
     // 根据制水机ID查询关联的供水机
     List<Device> findByParentMakerIdAndDeviceType(String parentMakerId, Device.DeviceType deviceType);
+
+    // 按状态和区域查询（无设备类型筛选）
+    List<Device> findByStatusAndAreaId(Device.DeviceStatus status, String areaId);
 }

src/main/java/com/campus/water/service/DeviceStatusServiceImpl.java

@@ -76,8 +76,24 @@ public class DeviceStatusServiceImpl implements DeviceStatusService {
     @Override
     public List<Device> getDevicesByStatus(String status, String areaId, String deviceType) {
         Device.DeviceStatus targetStatus = Device.DeviceStatus.valueOf(status);
-        Device.DeviceType targetType = Device.DeviceType.valueOf(deviceType);
-        return deviceRepository.findByStatusAndAreaIdAndDeviceType(targetStatus, areaId, targetType);
+
+        // 处理设备类型参数（允许为null）
+        Device.DeviceType targetType = null;
+        if (deviceType != null && !deviceType.isEmpty()) {
+            targetType = Device.DeviceType.valueOf(deviceType);
+        }
+
+        // 根据设备类型是否为null执行不同查询
+        if (targetType != null) {
+            return deviceRepository.findByStatusAndAreaIdAndDeviceType(targetStatus, areaId, targetType);
+        } else {
+            // 仅按状态和区域查询（如果有区域ID）
+            if (areaId != null && !areaId.isEmpty()) {
+                return deviceRepository.findByStatusAndAreaId(targetStatus, areaId);
+            } else {
+                return deviceRepository.findByStatus(targetStatus);
+            }
+        }
     }
 
     @Override