我有一个在测试中运行良好的系统,但现在我已将它们移至生产服务器并准备扔开关,我遇到了问题。
如果应用程序闲置约 15 分钟,则 Spring 事务服务中的 DB 连接将断开。发生这种情况后,第一个来到应用程序的人会收到这个问候
org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Cannot open connection
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:596)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:621)
parity.persistence.DataAccess$$EnhancerByCGLIB$$921ef13.find(<generated>)
parity.model.Configuration.getConfiguration(Configuration.java:84)
parity.model.Configuration.getSetting(Configuration.java:46)
parity.model.Configuration$$FastClassByCGLIB$$8355c3d0.invoke(<generated>)
net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:617)
parity.model.Configuration$$EnhancerByCGLIB$$5e96e8b9.getSetting(<generated>)
parity.model.OnlineStatus.getSiteStatus(OnlineStatus.java:50)
parity.action.site.SiteStatusInterceptor.intercept(SiteStatusInterceptor.java:16)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:498)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:434)
root cause
如果您在浏览器上按 F5,它会重新连接并正常运行。看起来spring正在按照第一个请求的方式做一些事情,去eek,我死了,在死的过程中,重新连接到数据库。但我不确定。
我一直在寻找解决这个问题的方法,但除非我使用 c3p0 或 weblogic,否则每个人都一无所知。有没有办法解决这个问题?这是我的配置文件
休眠.cfg.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="connection.autocommit">false</property>
<property name="show_sql">false</property>
<property name="use_sql_comments">false</property>
</session-factory>
</hibernate-configuration>
交易服务.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<bean id="boardingSessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocations">
<list>
<value>classpath:hibernate/boarding-hibernate.cfg.xml</value>
<value>classpath:boarding-hibernate.cfg.xml</value>
</list>
</property>
<property name="configurationClass">
<value>org.hibernate.cfg.AnnotationConfiguration</value>
</property>
</bean>
<bean id="boardingTransactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="boardingSessionFactory" />
<qualifier value="boarding" />
</bean>
<tx:advice id="boardingTxAdvice" transaction-manager="boardingTransactionManager">
<tx:attributes>
<tx:method name="get*" read-only="true" />
<tx:method name="*" />
</tx:attributes>
</tx:advice>
</beans>
请注意,我的休眠使用 2 个文件,一个在处理全局设置的 API 中,另一个在应用程序本身中具有应用程序特定设置。出于这里的目的,我认为,全球性才是最重要的。