根据头盔编号判断头盔二维码是否存在。

ebike-operate/src/main/java/com/cdzy/ebikeoperate/controller/EbikeHelmetQrcodeController.java

@@ -4,6 +4,7 @@ import com.cdzy.common.model.JsonResult;
 import com.cdzy.ebikeoperate.model.dto.request.ReqEbikeHelmetQrcodeBatchDto;
 import com.cdzy.ebikeoperate.model.dto.request.ReqEbikeHelmetQrcodeDto;
 import com.mybatisflex.core.paginate.Page;
+import com.mybatisflex.core.query.QueryWrapper;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.beans.factory.annotation.Autowired;
 import com.cdzy.ebikeoperate.model.pojo.EbikeHelmetQrcode;
@@ -101,5 +102,22 @@ public class EbikeHelmetQrcodeController {
         Page<EbikeHelmetQrcode> pageRecords = ebikeHelmetQrcodeService.getPageRecords(reqEbikeHelmetQrcodeDto);
         return JsonResult.success(pageRecords);
     }
-
+    /**
+     * 根据头盔编号判断头盔二维码是否存在。
+     *
+     * @param helmetCode 头盔二维码
+     * @return JsonResult 包含查询结果的响应
+     */
+    @GetMapping("/checkhelmetCodeExistence")
+    public JsonResult<?> checkhelmetCodeExistence(@RequestParam(name = "helmetCode") String helmetCode) {
+        try {
+            QueryWrapper queryWrapper = new QueryWrapper();
+            queryWrapper.eq("helmet_code", helmetCode);
+            long count = ebikeHelmetQrcodeService.count(queryWrapper);
+            return JsonResult.success(count);
+        } catch (Exception e) {
+            // 记录异常信息
+            return JsonResult.failed("查询失败，请稍后再试");
+        }
+    }
 }