Java 使用Spring@query运行JPQL查询时发生异常

它抛出异常，如

org.hibernate.hql.internal.ast.QuerySyntaxException:预期关闭，在第1行附近发现“day”。

JPA不理解此MySQL函数。 因此，为了解决您的问题，您应该计算查询之外的间隔，并将间隔作为参数提供给查询。
在您的情况下，您应该设法做到这一点，因为间隔不依赖于请求表中的任何数据，而是依赖于执行查询之前的已知数据，因为您使用

：startDate

和

：endDate

参数计算间隔：

@Query("select new map(count(t.status) as allCount,sum(case when t.status='Approved' then 1 else 0 end) as approvedCount, "
        + "sum(case when t.status='Overdue'  then 1 else 0 end) as overdueCount,"
        + "sum(case when t.status='Rejected' then 1 else 0 end) as rejectedCount,"
        + "sum(case when t.status='Awaiting Approval' then 1 else 0 end) as awaitingApprovalCount,"
        + "sum(case when t.status='Not Submitted' then 1 else 0 end) as notSubmittedCount) "
        + "from Timesheet as t where t.emplId=:employeeId and (t.startDate between date_add(:startDate, interval -6 day) and date_add(:endDate,interval 6 day))"
        + "and (t.endDate between date_add(:startDate, interval -6 day) and date_add(:endDate,interval 6 day))")

在调用查询的方法中，计算日期（我使用了JodaTime作为示例）：

在查询中，用这些参数化日期替换MySql函数

Date computedStartDate = new DateTime(startdate).minusDay(6).toDate();
Date computedEndDate = new DateTime(endDate).plusDay(6).toDate();
...
// you create your query
//...
//you set these dates
 query.setParameter("computedStartDate",computedStartDate);
 query.setParameter("computedEndDate",computedEndDate);
// you execute your query

---

任何JPQL引用都会告诉您。。。“日期添加”、“间隔”、“日期”是无效的JPQL关键字。JPQL！=SQL

Date computedStartDate = new DateTime(startdate).minusDay(6).toDate();
Date computedEndDate = new DateTime(endDate).plusDay(6).toDate();
...
// you create your query
//...
//you set these dates
 query.setParameter("computedStartDate",computedStartDate);
 query.setParameter("computedEndDate",computedEndDate);
// you execute your query

@Query("select new map(count(t.status) as allCount,sum(case when t.status='Approved' then 1 else 0 end) as approvedCount, "
        + "sum(case when t.status='Overdue'  then 1 else 0 end) as overdueCount,"
        + "sum(case when t.status='Rejected' then 1 else 0 end) as rejectedCount,"
        + "sum(case when t.status='Awaiting Approval' then 1 else 0 end) as awaitingApprovalCount,"
        + "sum(case when t.status='Not Submitted' then 1 else 0 end) as notSubmittedCount) "
        + "from Timesheet as t where t.emplId=:employeeId and (t.startDate between :computedStartDate and :computedEndDate)"
        + "and (t.endDate between :computedStartDate and :computedEndDate)")