fix

@@ -55,6 +55,9 @@ public class DinerDTO {
         @NotNull(message = "班级不能为空")
         private Integer classId;
 
+        @ApiModelProperty(value = "学号")
+        private String studentNo;
+
         @ApiModelProperty(value = "姓名")
         private String name;
     }

@@ -116,11 +116,11 @@ public class DinerServiceImpl implements DinerService {
             throw ClientEndExceptions.IncorrectRequestValue.build(ErrorCodeEnum.CLIENT_CODE_NOT_EXISTS);
         }
         final var singleClientRpcResponse = clientsByCodes.get(0);
-        if (diner.getClientId() == singleClientRpcResponse.getId() && diner.getClassId() == updateDinerDTO.getClassId() && !diner.getName().equals(updateDinerDTO.getName())) {
+        if (diner.getClientId() == singleClientRpcResponse.getId() && diner.getClassId() == updateDinerDTO.getClassId() && diner.getStudentNo().equals(updateDinerDTO.getStudentNo()) && !diner.getName().equals(updateDinerDTO.getName())) {
             mealOrderServiceRpcClient.updateDiner(loginInfo, DinerModification.newBuilder().setId(diner.getId()).setShouldUpdateName(true).setName(updateDinerDTO.getName()).build());
             return;
         }
-        final var diners = mealOrderServiceRpcClient.queryDinersByCondition(loginInfo.getEnterpriseId(), List.of(singleClientRpcResponse.getId()), List.of(updateDinerDTO.getClassId()), diner.getStudentNo());
+        final var diners = mealOrderServiceRpcClient.queryDinersByCondition(loginInfo.getEnterpriseId(), List.of(singleClientRpcResponse.getId()), List.of(updateDinerDTO.getClassId()), updateDinerDTO.getStudentNo());
         if (!diners.isEmpty()) {
             throw ClientEndExceptions.IncorrectRequestValue.build(ErrorCodeEnum.DINER_ALREADY_EXISTS);
         }