java - SPEL 表达式不适用于@Query 中的#{#entityName}

Question

以下查询有效:

@Query("select o from Employee o where o.tenant.id = ?#{context.tenantId}")

@Query("select o from #{#entityName} o where o.tenant.id = 1")

但如果我同时使用这两个表达式，则会在启动时抛出异常。

@Query("select o from #{#entityName} o where o.tenant.id = ?#{context.tenantId}")

异常堆栈跟踪:

Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1007E:(pos 0): Property or field 'context' cannot be found on null
at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:222)
at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:93)
at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:81)
at org.springframework.expression.spel.ast.CompoundExpression.getValueRef(CompoundExpression.java:51)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:87)
at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:131)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:299)
at org.springframework.expression.common.CompositeStringExpression.getValue(CompositeStringExpression.java:89)
at org.springframework.expression.common.CompositeStringExpression.getValue(CompositeStringExpression.java:136)
at org.springframework.data.jpa.repository.query.ExpressionBasedStringQuery.renderQueryIfExpressionOrReturnQuery(ExpressionBasedStringQuery.java:71)
at org.springframework.data.jpa.repository.query.ExpressionBasedStringQuery.<init>(ExpressionBasedStringQuery.java:48)
at org.springframework.data.jpa.repository.query.AbstractStringBasedJpaQuery.<init>(AbstractStringBasedJpaQuery.java:57)
at org.springframework.data.jpa.repository.query.SimpleJpaQuery.<init>(SimpleJpaQuery.java:55)
at org.springframework.data.jpa.repository.query.JpaQueryFactory.fromMethodWithQueryString(JpaQueryFactory.java:70)
at org.springframework.data.jpa.repository.query.JpaQueryFactory.fromQueryAnnotation(JpaQueryFactory.java:51)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$DeclaredQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:137)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:202)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:80)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:357)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:192)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:239)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:225)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1627)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1564)

我做错了什么还是这是一个错误？使用 spring-data-jpa 1.7.1 和 1.8.0-snapshot 进行测试。

Answer 1

这是一个错误，我已经在着手修复。我提交了 https://jira.spring.io/browse/DATAJPA-629跟踪这个。编辑:我为 JIRA 问题添加了一个修复程序 - 你介意试一试吗？