IllegalAccessException在使用QuerydslPredicateExecutor和JpaRepository时

Question

应用程序：

7.3

• spring-boot
• kotlin 1.6
• jdk 17 (也尝试了8和11)
• gradle 2.6.0
  • spring-data-jpa

• jpa
• kotlin
• apt
• kotlin-codegen

• querydsl 5.0

我试图将QuerydslPredicateExecutor与JpaRepository一起使用，但是当应用程序启动时，它无法使用IllegalStateException初始化，因为它无法访问生成的Q类的某些字段或方法。

不过，使用JPAQuery而不是QuerydslPredicateExecutor存储库是可行的。

任何关于什么可能是根本问题的想法都将受到欢迎。

实体

@Entity
class Workplace(
    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    var id: Long? = null,
    var name: String,
    var description: String,
    var location: String,
)

储存库：

@Repository
interface WorkplaceRepository : JpaRepository<Workplace, Long>, QuerydslPredicateExecutor<Workplace>

该处：

@Service
class WorkplaceService(
    private val workplaceRepository: WorkplaceRepository,
) {
    
    fun findAll(searchOpts: SearchOpts): Iterable<Workplace> {
        return workplaceRepository.findAll(searchOpts.toPredicate())
    }
}

失败，但有例外：

Caused by: java.lang.IllegalStateException: Could not access method or field: class org.springframework.util.ReflectionUtils cannot access a member of class <package>.QWorkplace with modifiers "private static final"

    at org.springframework.util.ReflectionUtils.handleReflectionException(ReflectionUtils.java:107) ~[spring-core-5.3.13.jar:5.3.13]
    at org.springframework.util.ReflectionUtils.getField(ReflectionUtils.java:657) ~[spring-core-5.3.13.jar:5.3.13]
    at org.springframework.data.querydsl.SimpleEntityPathResolver.lambda$createPath$0(SimpleEntityPathResolver.java:74) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at java.base/java.util.Optional.map(Optional.java:260) ~[na:na]
    at org.springframework.data.querydsl.SimpleEntityPathResolver.createPath(SimpleEntityPathResolver.java:74) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at org.springframework.data.jpa.repository.support.QuerydslJpaPredicateExecutor.<init>(QuerydslJpaPredicateExecutor.java:81) ~[spring-data-jpa-2.6.0.jar:2.6.0]
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getRepositoryFragments(JpaRepositoryFactory.java:272) ~[spring-data-jpa-2.6.0.jar:2.6.0]
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getRepositoryFragments(JpaRepositoryFactory.java:242) ~[spring-data-jpa-2.6.0.jar:2.6.0]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepositoryComposition(RepositoryFactorySupport.java:434) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:300) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:322) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at org.springframework.data.util.Lazy.getNullable(Lazy.java:230) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at org.springframework.data.util.Lazy.get(Lazy.java:114) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:328) ~[spring-data-commons-2.6.0.jar:2.6.0]
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:144) ~[spring-data-jpa-2.6.0.jar:2.6.0]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.13.jar:5.3.13]
    ... 179 common frames omitted

然而，这样做是可行的：

储存库：

@Repository
interface WorkplaceRepository : JpaRepository<Workplace, Long>

该处

@Service
class WorkplaceService(
    private val workplaceRepository: WorkplaceRepository,
    private val entityManager: EntityManager,
) {
  
    fun findAll(searchOpts: SearchOpts): Iterable<Workplace> {
        return JPAQuery<Workplace>(entityManager)
            .from(QWorkplace.workplace)
            .where(searchOpts.toPredicate())
            .fetch()
    }
}

Answer 1

我认为这与https://github.com/querydsl/querydsl/pull/3076修复的bug有关，但还没有进入发布版。