【发布时间】：2018-11-23 09:24:50
【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，它会显示第一个查询的错误，该查询可以完美找到，如果我删除第二个查询，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;
....
【问题讨论】：
-
Foo没有属性courierId，只有courier。除非您的Courier类具有属性id，否则异常会准确地告诉您问题所在。 -
但我不明白为什么如果我删除第二个查询它会起作用。
findByCourierIds。这是我的问题，在我添加第二个查询之前，它能够从courier表映射courierId
标签： java mysql spring spring-data-jpa spring-data