spring-data-jpa

问题 I have entity Market and Event . Market entity has a column: @ManyToOne(fetch = FetchType.EAGER) private Event event; Next I have a repository: public interface MarketRepository extends PagingAndSortingRepository<Market, Long> { } and a projection: @Projection(name="expanded", types={Market.class}) public interface ExpandedMarket { public String getName(); public Event getEvent(); } using REST query /api/markets?projection=expanded&sort=name,asc I get successfully the list of markets with

问题 I have an application where the user will be uploading an excel file(.xlsx or .csv) with more than 10,000 rows with a single column "partId" containing the values to look for in database I will be reading the excel values and store it in list object and pass the list as parameter to the Spring Boot JPA repository find method that builds IN clause query internally: // Read excel file stream = new ByteArrayInputStream(file.getBytes()); wb = WorkbookFactory.create(stream); org.apache.poi.ss

问题 I have an application where the user will be uploading an excel file(.xlsx or .csv) with more than 10,000 rows with a single column "partId" containing the values to look for in database I will be reading the excel values and store it in list object and pass the list as parameter to the Spring Boot JPA repository find method that builds IN clause query internally: // Read excel file stream = new ByteArrayInputStream(file.getBytes()); wb = WorkbookFactory.create(stream); org.apache.poi.ss

问题 I have an application where the user will be uploading an excel file(.xlsx or .csv) with more than 10,000 rows with a single column "partId" containing the values to look for in database I will be reading the excel values and store it in list object and pass the list as parameter to the Spring Boot JPA repository find method that builds IN clause query internally: // Read excel file stream = new ByteArrayInputStream(file.getBytes()); wb = WorkbookFactory.create(stream); org.apache.poi.ss

问题 Hi what I am trying to achieve is to get SQL native query result map into my DTO in java spring jpa repository, how do I do this properly? I try several code, but it does not work, here is what I tried: First try : @Repository public interface StockRepository extends RevisionRepository<Stock, Long, Integer>, JpaRepository<Stock, Long> { @Query(value = "SELECT stock_akhir.product_id AS productId, stock_akhir.product_code AS productCode, SUM(stock_akhir.qty) as stockAkhir " + "FROM book_stock

问题 I want to use spring data repository interface to execute native queries - I think this way is the simplest because of low complexity. But when extending interface ex. CrudRepository<T, ID> I need to write T - my entity, which is not available. My native queries does not return any concrete entity, so what is the best way to create spring repository without entity? 回答1: CrudRepository or JpaRepository were not designed to work without an <Entity,ID> pair. You are better off creating a custom

问题 I'm trying to convert the input timestamp which will be in the string format to cloud timestamp with the help of a Spring Data Rest custom converter which is not working. Need an help on the same in understanding why custom converters are not invoked. Input: http://localhost:8080/apipromocentral/promotions RequestBody : {"startDateTime": "2019-11-07 15:53:00"} POJO: @ApiModel @Data @AllArgsConstructor @Table(name = "PROMOTIONS") public class Promotion { /** * promotion id */ @ApiModelProperty

问题 I'm trying to convert the input timestamp which will be in the string format to cloud timestamp with the help of a Spring Data Rest custom converter which is not working. Need an help on the same in understanding why custom converters are not invoked. Input: http://localhost:8080/apipromocentral/promotions RequestBody : {"startDateTime": "2019-11-07 15:53:00"} POJO: @ApiModel @Data @AllArgsConstructor @Table(name = "PROMOTIONS") public class Promotion { /** * promotion id */ @ApiModelProperty

问题 I get this error when I try run my project. After many hours of search I found out why this happens, but I have no idea how to exclude one from exporting the package. java.lang.module.ResolutionException: Modules spring.aop and aopalliance export package org.aopalliance.intercept to module spring.beans It is my first time with Spring in general (I need JPA for CRUD I'm working now with Hibernate). I used Intellij IDEA's "Add Framework..." function in order to add Spring Data JPA. My Maven pom

问题 I get this error when I try run my project. After many hours of search I found out why this happens, but I have no idea how to exclude one from exporting the package. java.lang.module.ResolutionException: Modules spring.aop and aopalliance export package org.aopalliance.intercept to module spring.beans It is my first time with Spring in general (I need JPA for CRUD I'm working now with Hibernate). I used Intellij IDEA's "Add Framework..." function in order to add Spring Data JPA. My Maven pom