从应用程序获取Hibernate会话计数

Question

我创建了简单的Java应用程序来学习Spring和hibernate集成。我做了所有的设置和应用程序也工作良好。

一切正常。但是，我想看看我的应用程序当前使用了多少会话，比如打开的连接和关闭的hibernate连接。

在Sessionfactory类中，我们使用“getStatistics”方法来检索hibernate统计数据，但这对我没有帮助。它也给了我零分。请找到下面的图片。

<?xml version="1.0" encoding="UTF-8"?>

http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 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“>

<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource"
    destroy-method="close">
    <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
    <property name="url" value="jdbc:oracle:thin:@localhost:1521:XE" />
    <property name="username" value="rocky" />
    <property name="password" value="rocky" />
</bean>

<bean id="mySessionFactory"
    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <property name="dataSource" ref="myDataSource" />
    <property name="mappingResources">
        <list>
            <value>orders.hbm.xml</value>
        </list>
    </property>
    <property name="hibernateProperties">
        <map>
            <entry>
                <key>
                    <value>hibernate.show_sql</value>
                </key>
                <value>true</value>
            </entry>
            <entry>
                <key>
                    <value>hibernate.dialect</value>
                </key>
                <value>org.hibernate.dialect.OracleDialect</value>
            </entry>
            <entry>
                <key>
                    <value>hibernate.query.factory_class</value>
                </key>
                <value>org.hibernate.hql.classic.ClassicQueryTranslatorFactory</value>
            </entry>
            <entry>
                <key>
                    <value>connection.autocommit</value>
                </key>
                <value>true</value>
            </entry>
        </map>
    </property>
</bean>

<bean id="transactionManager"
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="mySessionFactory" />
</bean>

<bean id="txManager"
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="mySessionFactory" />
</bean>

<bean id="transactionProxy"
    class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
    <property name="transactionManager" ref="txManager" />
    <property name="transactionAttributes">
        <props>
            <prop key="*">PROPAGATION_REQUIRED</prop>
        </props>
    </property>
    <property name="target" ref="myServiceClass">
    </property>
</bean>

<tx:annotation-driven transaction-manager="txManager" />

<bean id="myServiceClass" class="myServiceClass">
    <property name="sessionFactory" ref="mySessionFactory" />
</bean>

Answer 1

看看你的代码，它会发现你还没有启用你的会话工厂的静态

步骤到无法会话工厂静态

SessionFactory sessionFactory = getSessionFactoryForApplication();
Statistics stats = sessionFactory.getStatistics();
stats.setStatisticsEnabled(true);

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