期待 IDENT，找到“：”

如何解决期待 IDENT，找到“：”

我正在为我的 Spring 项目构建本机查询。任何人都知道问题是什么？

@Query(value = "SELECT e.first_name as firstName,e.last_name as lastName,jh.start_date as startDate,jh.end_date as endDate," +
                "j.job_title as jobName,d.department_name as departmentName FROM JOB_HISTORY jh " +
                "JOIN JOBS j ON jh.JOB_ID = j.JOB_ID " +
                "JOIN DEPARTMENTS d ON JH.DEPARTMENT_ID = d.DEPARTMENT_ID " +
                "JOIN EMPLOYEES e ON jh.EMPLOYEE_ID = e.EMPLOYEE_ID " +
                "ORDER BY jh.:sortBy :orderBy")
        List<EmployeeJobView> getAllEmployeeJob(String sortBy,String orderBy);

org.hibernate.hql.internal.ast.QuerySyntaxException：期待 IDENT， 在第 1 行第 348 列附近找到“：” [SELECT e.first_name 作为 firstName， e.last_name 作为 lastName，jh.start_date 作为 startDate，jh.end_date 作为 endDate，j.job_title 作为 jobName，d.department_name 作为部门名称 从 JOB_HISTORY jh JOIN JOBS j ON jh.JOB_ID = j.JOB_ID JOIN DEPARTMENTS d ON JH.DEPARTMENT_ID = d.DEPAR TMENT_ID JOIN EMPLOYEES e ON jh.EMPLOYEE_ID = e.EMPLOYEE_ID ORDER BY jh.:sortBy :orderBy]

解决方法

如果我猜对了，我会使用 SPeL 重写最后一行：

def update(self,request,pk,**kwargs):
        """
        Update Instance
        """
        try:
            partial = kwargs.pop('partial',False)
            instance = self.get_custom_queryset(request).filter(id=pk)
            core_user = User.objects.using(request.user.db).filter(email=request.user.email).first()

            serializer = self.write_serializer_class(
                data=request.data,partial=partial,context={"db": request.user.db,"core_user": core_user},)
            if serializer.is_valid():
                # extract many to many data
                tags = serializer.validated_data.pop('tags',None)
                attachments = serializer.validated_data.pop('attachments',None)
                # update values
                instance.update(**serializer.validated_data)
                instance.first().save()
                if getattr(instance,'_prefetched_objects_cache',None):
                    # If 'prefetch_related' has been applied to a queryset,we need to
                    # forcibly invalidate the prefetch cache on the instance.
                    instance._prefetched_objects_cache = {}
                # save many2many data
                if tags:
                    # delete all current tags to avoid duplications
                    instance.first().tags.set([])
                    # iterate and add
                    for tag_id in tags:
                        tag = Tag.objects.using(request.user.db).filter(pk=tag_id).first()
                        instance.first().tags.add(tag)
                if attachments:
                    # delete all current legal_files to avoid duplications
                    instance.first().attachments.set([])
                    # iterate and add
                    for attachment_id in attachments:
                        attachment = base_models.Attachment.objects.using(request.user.db).filter(
                            pk=attachment_id).first()
                        instance.first().attachments.add(attachment)

                instance.first().save(using=request.user.db,update_fields=['created'])

                return Response(self.read_serializer_class(instance[0],many=False).data)
            else:
                # No correct data passed (TODO: Register log?)
                return Response(
                    serializer.errors,status=status.HTTP_406_NOT_ACCEPTABLE)

        except Exception as e:
            # TODO: Unknown error,must be logged
            return Response(
                str(e),status=status.HTTP_500_INTERNAL_SERVER_ERROR)

正如 Simon Martinelli 所提到的，您应该使用 "ORDER BY jh.?#{[0]} ?#{[1]}" 。

另请参阅此处的 SPeL 和 JPA 指南https://spring.io/blog/2014/07/15/spel-support-in-spring-data-jpa-query-definitions。