Spring Data JPA - 在日期之前和之后构建查询

Question

我是 Java JPA 的新手 - Spring Boot。我想创建一个 JPA 查找来计算两个日期之间的行数。

我需要一个数字来显示过去 28 天内加入的成员数量。所以像 10.

但也会得到一个值，表示与上个月的差异 - 所以 +4% - 或 -2% - 所以我想这将是 count1/count2 * 100 = 差异。您将如何检测极性 - 那么评估它是负极还是正极？

目前我有这样的东西

long countByRegisteredDateAfter(Date thresholdDate) throws Exception;

但可能需要更像这样的东西

long countByRegisteredBeforeDateAfter(Date thresholdDate1, Date thresholdDate2)
    throws Exception;

也许还有像这样更精细的调整

long countByRegisteredBeforeAndDateAfterAndRole(Date thresholdDate1, Date thresholdDate2, String role)
    throws Exception;

到目前为止的代码：

            // 28 days ago
            Calendar thresholdPast28 = Calendar.getInstance();
            thresholdPast28.set(Calendar.HOUR_OF_DAY,0);
            thresholdPast28.set(Calendar.MINUTE,0);
            thresholdPast28.set(Calendar.SECOND,0);
            thresholdPast28.add(Calendar.DATE,-28);

            java.util.Date thresholdPast28Date = thresholdPast28.getTime();
            Long countLast28Days = (Long) tblLoginRepository.countByRegisteredDateAfter(thresholdPast28Date);

            System.out.println("countLast28Days " + countLast28Days);


            // 56 days ago
            Calendar thresholdPast56 = Calendar.getInstance();
            thresholdPast56.set(Calendar.HOUR_OF_DAY,0);
            thresholdPast56.set(Calendar.MINUTE,0);
            thresholdPast56.set(Calendar.SECOND,0);
            thresholdPast56.add(Calendar.DATE,-28);

            java.util.Date thresholdPast56Date = thresholdPast56.getTime();
            Long countLast56Days = (Long) tblLoginRepository.countByRegisteredDateAfter(thresholdPast56Date);

            System.out.println("countLast56Days " + countLast56Days);

Answer 1

我有点困惑，因为主题指出您想尝试查找之前和之后的日期，而稍后您想要将它们介于两者之间。不过要在尝试之间获取日期：

long countByRegisteredDateBetween(Date thresholdDate1, Date thresholdDate2)

或者在第二个例子中

long countByRegisteredDateBetweenAndRole(Date thresholdDate1, Date thresholdDate2, String role)

并尝试前后对比：

long countByRegisteredDateBeforeAndRegisteredDateAfter(Date thresholdDate1, Date thresholdDate2)

与角色案例类似

Spring Data JPA - 在日期之前和之后构建查询

Spring Data JPA - building a query before and after date

java

spring

jpql

spring-data-jpa