Question

我尝试使用Hibernate 4.3.5.Final和Spring 4.0.6升级我们的应用程序。我的应用程序中数据库写入操作的任何位置都会出现如下错误：

Caused by: org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.
  at org.springframework.orm.hibernate4.HibernateTemplate.checkWriteOperationAllowed(HibernateTemplate.java:1135)
  at org.springframework.orm.hibernate4.HibernateTemplate$26.doInHibernate(HibernateTemplate.java:826)
  at org.springframework.orm.hibernate4.HibernateTemplate.doExecute(HibernateTemplate.java:340)
  at org.springframework.orm.hibernate4.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:308)
  at org.springframework.orm.hibernate4.HibernateTemplate.deleteAll(HibernateTemplate.java:823)
  ...

以下是sessionFactory和transactionManager的弹簧配置：

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
  <property name="dataSource" ref="dataSource"/>
  <property name="mappingResources">
    <list>
      <value>com/mycompany/Person.hbm.xml</value>   
    </list>
  </property>
  <property name="hibernateProperties">
    <props>
      <prop key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop>
    </props>
  </property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
  <property name="sessionFactory" ref="sessionFactory"/>
</bean>

1：

为了全局设置flushMode以便应用程序以与以前相同的方式工作，我需要将flushMode设置为全局，因此我不想使用@Transactional（readOnly = false）方法。

2：

在下面的帖子中，有人建议将singleSession设置为false， Java / Hibernate - Write operations are not allowed in read-only mode

Spring文档建议指定＆＃34; singleSession＆＃34; =＆＃34; false＆＃34;有副作用： http://docs.spring.io/spring/docs/4.0.6.RELEASE/javadoc-api/org/springframework/orm/hibernate3/support/OpenSessionInViewInterceptor.html

3：

我在web.xml中看到了类似下面的一些建议，它允许你拦截hibernate3会话并提供一个版本的会话，例如： flushMode.AUTO。但是，当您使用org.springframework.orm.hibernate4.support.OpenSessionInViewFilter时，这在hibernate 4中不起作用。

<filter>
    <filter-name>openSessionInViewFilter</filter-name>
    <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
    <init-param>
        <param-name>flushMode</param-name>
        <param-value>AUTO</param-value>
    </init-param>
</filter>

4：

下面建议的方法是使用JPA事务管理器，它遵循HibernateJpaDialect的复杂实现。我目前没有使用JPA，这种方法看起来不够简单。 How do I set flush mode to "COMMIT" in my configuration files?

5：

我在春季配置中尝试过以下内容（根据Spring ORM 4.0.5 and Hibernate 4.3.5 - Cant save to database的建议），它似乎没有用，人们建议使用web.xml方法： Spring and Hibernate suddenly set the transaction to readonly

<tx:advice id="transactionAdvice" transaction-manager="transactionManager" >
  <tx:attributes>
    <tx:method name="*" read-only="false"/>
  </tx:attributes>
</tx:advice>

问题：

有人建议一个简单的方法来允许为Hibernate 4.3.5.Final和Spring 4.0.6设置FlushMode吗？

Answer 1

我最终用自定义实现覆盖了OpenSessionInViewFilter：

1：

的web.xml：

<filter>
  <filter-name>openSessionInViewFilter</filter-name>
  <filter-class>com.mycompany.AutoFlushOpenSessionInViewFilter</filter-class>
</filter>

<filter-mapping>
  <filter-name>openSessionInViewFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

Spring需要ContextLoaderListener才能工作。
AutoFlushOpenSessionInViewFilter用于拦截来自/ * url模式的请求

2：

AutoFlushOpenSessionInViewFilter：

import org.hibernate.FlushMode;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.dao.DataAccessResourceFailureException;
import org.springframework.orm.hibernate4.support.OpenSessionInViewFilter;

public class AutoFlushOpenSessionInViewFilter extends OpenSessionInViewFilter {

  protected Session openSession(SessionFactory sessionFactory) throws DataAccessResourceFailureException {
    try {
      Session session = sessionFactory.openSession();
      session.setFlushMode(FlushMode.AUTO); // This line changes the default behavior
      return session;
    } catch (HibernateException ex) {
      throw new DataAccessResourceFailureException("Could not open Hibernate Session", ex);
    }
  }
}

OpenSessionInViewFilter是拦截hibernate会话的默认方式（http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/orm/hibernate4/support/OpenSessionInViewFilter.html）
openSession方法打开一个hibernate会话。 Hibernate将使用此会话而不是创建新会话
hibernate3.support.OpenSessionInViewFilter允许你提供一个FlushMode，hibernate4.support.OpenSessionInViewFilter硬编码值，所以我用自己的实现覆盖它
确保您的sessionFactory bean名称是sessionFactory。否则，您需要将sessionFactoryBeanName设置为web.xml

3：

所有Spring bean都需要在Web应用程序上下文（web.xml）中注册：

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>
    classpath:appContext.xml
    ...
  </param-value>
</context-param>

4：

确保在需要使用它们时，仅从应用程序上下文中获取spring bean。以下是如何举例： http://sujitpal.blogspot.co.uk/2007/03/accessing-spring-beans-from-legacy-code.html

确保只创建了一个Spring bean副本！如果使用org.springframework.context.support.ClassPathXmlApplicationContext加载Spring bean，过滤器将不会拾取这些bean。

5：

就我而言，还需要一个contextId

<context-param>
  <param-name>contextId</param-name>
  <param-value>myApp</param-value>
  <description>Required contextId when filter is supplied</description>
</context-param>

否则我会收到以下问题：

2014-09-02 10:59:50 StandardContext[/myApp]Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
java.lang.NoSuchMethodError: javax.servlet.ServletContext.getContextPath()Ljava/lang/String;
  at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:384)
  at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
  at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
  at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827)
  at org.apache.catalina.core.StandardContext.start(StandardContext.java:4343)
  at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
  at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
  at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
  at org.apache.catalina.core.StandardHostDeployer.addChild(StandardHostDeployer.java:903)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:606)
  at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
  at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:256)
  at org.apache.commons.digester.Rule.end(Rule.java:276)
  at org.apache.commons.digester.Digester.endElement(Digester.java:1058)
  at org.apache.catalina.util.CatalinaDigester.endElement(CatalinaDigester.java:76)
  at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
  ...

如果有人有兴趣，以下是我的Ivy.xml

中的内容

<!--Spring 4.0.6.RELEASE -->
<dependency org="org.springframework" name="spring-aop" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-beans" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-core" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-expression" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-context" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-jdbc" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-orm" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-tx" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="org.springframework" name="spring-web" rev="4.0.6.RELEASE" conf="compile->master,sources,javadoc"/>
<dependency org="aopalliance" name="aopalliance" rev="1.0" conf="compile->master,sources,javadoc"/>

<!--Hibernate 4.3.5-->
<dependency org="org.hibernate" name="hibernate-core" rev="4.3.5.Final" conf="compile->master,compile,sources"/>
<dependency org="net.sf.ehcache" name="ehcache-core" rev="2.4.8" conf="compile->master,sources,javadoc"/>
<dependency org="org.slf4j" name="slf4j-api" rev="1.7.5" conf="compile->master,sources,javadoc"/>

希望这有助于在升级Spring和Hibernate时遇到同样问题的任何人。

如何使用Spring 4.0.6全局设置FlushMode for Hibernate 4.3.5.Final？

1 个答案: