java - java.lang.IllegalArgumentException:找不到命名查询。(实体管理器未创建NamedQuery)

我正在使用hibernate 4.1.5.Final和Spring 3.1.2 Release和Jboss 7.1。我已经在具有@NamedQuery批注的类中编写了所有命名查询，但是实体管理器未创建命名查询。我发布了stacktrace和context.xml

  09:58:49,695 ERROR [stderr] (http-localhost-127.0.0.1-8080-2) java.lang.IllegalArgumentException: Named query not found: validateLoginHash
    09:58:49,770 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at org.hibernate.ejb.AbstractEntityManagerImpl.createNamedQuery(AbstractEntityManagerImpl.java:642)
    09:58:49,772 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
    09:58:49,774 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    09:58:49,777 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at java.lang.reflect.Method.invoke(Method.java:597)
    09:58:49,779 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:365)

    09:58:49,782 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at $Proxy30.createNamedQuery(Unknown Source)

    09:58:49,784 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)

    09:58:49,785 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

    09:58:49,788 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at java.lang.reflect.Method.invoke(Method.java:597)

    09:58:49,790 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)

    09:58:49,793 ERROR [stderr] (http-localhost-127.0.0.1-8080-2)   at $Proxy30.createNamedQuery(Unknown Source)

ApplicationContext.xml

<bean id="jpaDialect" class="org.springframework.orm.jpa.vendor.HibernateJpaDialect"/>
    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">


        <property name="dataSource" ref="dataSource" />
        <property name="jpaDialect" ref="jpaDialect"/>
        <property name="packagesToScan" value="com.project.entities"/>


        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="showSql" value="false" />
                <property name="generateDdl" value="false" />
                <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
            </bean>
        </property>

<!--        <property name="persistenceUnitName" value="Project" /> -->
        <property name="persistenceXmlLocation" value="classpath:META-INF/jpa-persistence.xml"/>

        <property name="loadTimeWeaver">
            <bean
                class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
        </property>

    </bean>

     <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName" value="java:jboss/datasources/MySqlDS"/>
    </bean>


    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
        <property name="dataSource" ref="dataSource" />
    </bean>

jpa-persistence.xml

<persistence>
    <persistence-unit name="Project" transaction-type="RESOURCE_LOCAL" >


        <provider>org.hibernate.ejb.HibernatePersistence</provider>
         <non-jta-data-source>java:jboss/datasources/MySqlDS</non-jta-data-source>
<!--         <properties>  -->
<!--           <property name="jboss.as.jpa.providerModule" value="hibernate3-bundled" />        -->
<!--           </properties>          -->

    </persistence-unit>

</persistence>

DBNamedQuery.java

@Entity
@NamedQueries( {

@NamedQuery(name = ... , query = ... ),
@NamedQuery(name = ..., query = ...),

.....More named queries

})

public class DBNamedQuery {


}

最佳答案

I have written all named queries in a class with @NamedQuery annotation

您没有在上面的陈述中明确提到您要引用的类的类型吗？您将需要在Entity类(用@Entity注释注释的类)中编写命名查询。

更新:
我现在对您的类DBNamedQuery感到困惑。您说您正在使用一个类来放置所有命名查询。我的理解是您正在使用此类为应用程序的所有实体编写命名查询。如果那是正确的，因为它不是真正的jpa实体，如何在类@Entity上使用DBNamedQuery注释？

包含@NamedQuery批注的类应为托管实体。而且我怀疑您的类DBNamedQuery不是。

为了确定问题，我建议在日志中检查这是否是受管理的实体。如果您不能做到这一点，那么EntityManger将为您和API提供在运行时检查contains(java.lang.Object entity)的方法。

与此相关的是，如果您使用注释，则对于JPA，命名查询是jpa实体的一部分。使用xml可让您灵活地存储在单独的文件中。