java.lang.IllegalArgumentException：未找到命名查詢（實體管理器未創建NamedQuery）

Question

我正在使用hibernate 4.1.5.Final和Spring 3.1.2 Release和Jboss 7.1。我已經使用@NamedQuery註解在類中編寫了所有命名查詢，但實體管理器未創建命名查詢。我張貼的堆棧跟蹤和context.xml的

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) 

的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中

<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 { 


} 

Answer 1

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

您沒有明確提及類的，你是在上述發言中提及的類型？您需要在Entity類（使用@Entity註解進行註釋的類）中編寫命名查詢。

更新： 我現在有點困惑你的班級DBNamedQuery。你說你正在使用一個類來放置所有命名查詢。我的理解是你正在使用這個類爲你的應用程序的所有實體編寫命名查詢。如果這是正確的，你怎麼能在你的課DBNamedQuery上使用@Entity註釋，因爲它不是一個真正的jpa實體？

包含@NamedQuery註釋的類應該是一個託管實體。我懷疑你的班級DBNamedQuery不是。

要確定問題，我建議檢查日誌，如果這是一個被管理的實體。如果你不能這樣做EntityManger給你和API檢查，在運行時contains(java.lang.Object entity)。

在相關說明中，如果您使用註釋，那麼JPA命名查詢是jpa實體的一部分。使用xml可讓您靈活地存儲在單獨的文件中。

Answer 2

檢查您的實體類DBNamedQuery是在包com.project.entities如您在的applicationContext.xml文件

Answer 3

您好我得到的，而不是創建爲什麼不ü名爲查詢創建一個XML文件中的類您的問題配置像Queries.hbm.xml像如下

<?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> 

保持這個XML文件中的資源文件夾，並在您的applicationContext企業-config.xml文件中寫如下

<property name="mappingResources"> 
    <list> 
     <value>/resources/hbms/Queries.hbm.xml</value> 
    </list> 
</property> 

所以它會正常工作。

編輯 那麼這取決於你如何在你的DAO層調用它。你必須調用像=>

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; 
    } 

注：1）namedQuery意味着Queries.hbm.xml檔案查詢的名稱。 2）namedParams []表示Query的參數名稱。 3）params表示參數的值。

Answer 4

我認爲這是因爲名字遺漏匹配。 在@NamedQuery中聲明的名稱與名爲該查詢的名稱不匹配。

如

@NamedQuery(name = "AAAA", query = ...) //must be same the name which call that query 

public void some() { 
    Query q = em.createNamedQuery("AAAA"); 
} 

Answer 5

添加在persistence.xml註釋掃描解決這個問題對我來說

<property name="hibernate.archive.autodetection" value="class, hbm" /> 

即使我試圖給包掃描我的實體管理器類似下面還didnt工作

@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; 
     }