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java - 无法创建查询元模型 Spring Data JPA 存储库（奇怪的行为）

问题描述

我的 JPA 存储库中出现意外错误。由于与 JPA 相关的异常，Spring 无法创建 repo bean。

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fooRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Could not create query metamodel for method public abstract com.xxxxx.entities.Foo com.xxxxx.repositories.FooRepository.findByCourierId(java.lang.Long)!
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

Caused by: java.lang.IllegalArgumentException: Could not create query metamodel for method public abstract com.xxxxx.entities.Foo com.xxxxx.repositories.FooRepository.findByCourierId(java.lang.Long)!
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:97)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:206)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:73)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:367)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:190)
Caused by: java.lang.IllegalArgumentException: Unable to locate Attribute  with the the given name [courierId] on this ManagedType [com.xxxxx.core.models.XXXObject]

我的回购代码如下：

public interface FooRepository extends XXXRepository<Foo> {

    Foo findByCourierId(Long courierId);

    @Query("SELECT CA " +
        "FROM Foo CA " +
        "WHERE CA.courier.id IN (?1)")
    List<Foo> findByCourierIds(List<Long> courierIds);
}

现在奇怪的是，在添加第二种方法之前，它会为第一个查询显示错误，该查询在添加第二种方法之前可以完美找到，如果我删除第二个查询，则代码可以正常工作。

实体的代码是这样的

@Entity
public class Foo extends XXXObject {

    @OneToOne
    @JoinColumn(name = "courier_id")
    private Courier courier;
....

标签： javamysqlspringspring-data-jpaspring-data

解决方案

代替

public interface FooRepository extends XXXRepository<Foo> {

你可以使用 JPARepository

 public interface FooRepository extends JpaRepository<Foo, Long> {

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