使用 JPA 和 @Queries 的 Spring Data

Question

我有一个 SpringBoot 应用程序和一个从 PagingAndSortingRepository 扩展的界面

用这个方法

@Query(value = "select cp.price, cp.update_date from t_hotel_price cp where cp.hotel_id = ?1 and cp.update_date between ?2 and NOW() order by cp.price ASC LIMIT 1", nativeQuery = true)
Object[] getMaxPriceAndDate (Long hotelId, Date aggregationDate);

来自 JunitTests

Object[] priceAndDate = hotelPriceService.getMaxPriceAndDate(currency.getId(),DateUtils.weeklyDate());  

        System.out.println 
            (priceAndDate[0]);

        System.out.println 
            (priceAndDate[1]);

期望 priceAndDate[0] 中的价格和 priceAndDate[1] 中的日期

但是我得到了一个java.lang.ArrayIndexOutOfBoundsException: 1

Answer 1

请看下面的修改代码：

方法：

@Query(value = "select cp.price, cp.update_date from t_hotel_price cp where cp.hotel_id = ?1 and cp.update_date between ?2 and NOW() order by cp.price ASC LIMIT 1", nativeQuery = true)
List<Object> getMaxPriceAndDate (Long hotelId, Date aggregationDate);

JunitTests：

List<Object> priceAndDates = hotelPriceService.getMaxPriceAndDate(currency.getId(),DateUtils.weeklyDate());  
Object[] priceAndDate = (Object[])priceAndDates.get(0);

        System.out.println 
            (priceAndDate[0]);
        System.out.println 
            (priceAndDate[1]);

希望对你有帮助..