问题
I am using hibernate 4.1.5.Final and Spring 3.1.2 Release and Jboss 7.1 . I have written all named queries in a class with @NamedQuery annotation but entity manager not creating named query . i am posting the stacktrace and 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 {
}
回答1:
I have written all named queries in a class with @NamedQuery annotation
You have not mentioned clearly the type of class that you are referring in the above statement? You would need to write named queries in Entity class (class annotated with @Entity annotation).
UPDATE:
I am somewhat now confused about your class DBNamedQuery. You said you are using one class to put all named queries. My understanding is you are using this class to write named queries for all the entities of your application. If that is correct how can you use @Entity annotation on your class DBNamedQuery because it is not really a jpa entity?
A class that contains @NamedQuery annotation should be a managed entity. And I suspect your class DBNamedQuery is not.
To identify the problem I suggest check in the logs if that is a manged entity. If you cannot do that then EntityManger gives you and API to check that during runtime contains(java.lang.Object entity).
On a related note, if you are using annotation then for JPA Named Queries are part of jpa entity. Using xml gives you a flexibility to store in a separate file.
回答2:
hi i got your problem instead of creating a class why not u create a xml file for named query like Queries.hbm.xml like as follow
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<!-- Query For User TO -->
<query name="loadUserByUsername">from User u where u.username = ?</query>
</hibernate-mapping>
keep this xml file in resources folder and in your applicationContext-enterprise-config.xml file write it as follow
<property name="mappingResources">
<list>
<value>/resources/hbms/Queries.hbm.xml</value>
</list>
</property>
so it will work fine.
Edit Well It's Depends how You Call it in your DAO Layer. You have to call like =>
public int executeNamedQuery(String namedQuery, String namedParams[], Object params[]) throws DatabaseException {
int result = 0;
Session session = getSession();
final String methodName = "executeNamedQuery";
try {
session.beginTransaction();
Query q = session.getNamedQuery(namedQuery);
if (namedParams != null) {
for (int i = 0; i < namedParams.length; i++) {
q.setParameter(namedParams[i], params[i]);
}
}
result = q.executeUpdate();
session.getTransaction().commit();
logger.debug("{} :: {} = {}", new Object[] { methodName, "No. of objects affected", result });
} catch (HibernateException e) {
session.getTransaction().rollback();
final String message = "Couldn't execute the named query " + namedQuery;
logger.error("{} :: {}", new Object[] { methodName, message, e });
throw new DatabaseException(getClass(), methodName, message, e);
} finally {
closeSession();
}
return result;
}
Note: 1) namedQuery means name of query in Queries.hbm.xml file. 2) namedParams[] means parameters name for Query. 3) params means value for parameters .
回答3:
Check if your entity class DBNamedQuery is in the package com.project.entities as you configured in the ApplicationContext.xml file
回答4:
I think it is because of name miss match. The name which is declare in @NamedQuery in not match with the name which is called that query.
e.g
@NamedQuery(name = "AAAA", query = ... ) //must be same the name which call that query
public void some() {
Query q = em.createNamedQuery("AAAA");
}
回答5:
Adding the annotation scanning in the persistence.xml solved the issue for me
<property name="hibernate.archive.autodetection" value="class, hbm" />
Even i tried giving the package scan in my entity manager like below also didnt work
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(getDataSource());
//em.setPackagesToScan("com.comp.proj.domain");
em.setPersistenceUnitName(PERSISTENCE_UNIT_NAME);
em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
return em;
}
来源：https://stackoverflow.com/questions/14152582/java-lang-illegalargumentexception-named-query-not-found-entity-manager-not-cr