我正在使用spring/hibernate
集成应用程序。我配置了c3p0
连接池。问题是如果我在hibernate
属性部分中设置c3p0
属性,那么不考虑这些属性并采取默认配置。如果我为combopooled数据源设置了相同的属性,那么就会考虑它们。哪里是放置c3p0
属性的最佳地点。在配置文件中放置c3p0属性的位置?
以下配置工作:
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${db.driverClassName}" />
<property name="jdbcUrl" value="${db.url}" />
<property name="user" value="${db.username}" />
<property name="password" value="${db.password}" />
<!-- c3p0 properties -->
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="20" />
<property name="maxStatements" value="0" />
<property name="preferredTestQuery" value="select * from sometable" />
</bean>
<bean name="wygSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mappingLocations" value="classpath:hibernate/module/*.hbm.xml" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop>
<prop key="hibernate.connection.pool.size">20</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
</props>
</property>
</bean>
这不起作用:
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${db.driverClassName}" />
<property name="jdbcUrl" value="${db.url}" />
<property name="user" value="${db.username}" />
<property name="password" value="${db.password}" />
</bean>
<bean name="wygSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mappingLocations" value="classpath:hibernate/module/*.hbm.xml" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop>
<prop key="hibernate.connection.pool.size">20</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<!-- c3p0 properties -->
<prop key="hibernate.c3p0.min_size">5</prop>
<prop key="hibernate.c3p0.max_size">20</prop>
<prop key="hibernate.c3p0.timeout">300</prop>
<prop key="hibernate.c3p0.max_statements">0</prop>
<prop key="hibernate.c3p0.preferredTestQuery">select * from sometable</prop>
</props>
</property>
</bean>
第一种形式,“池大小”属性定义重复? (在'c3p0'数据源和'hibernate' proeprties中。)我猜如果你在第二种形式中定义了hibernate属性中的所有数据源属性,它就可以正常工作。 – MJM
[c3p0属性应该在哪里指定?](http://stackoverflow.com/questions/10553797/where-should-c3p0-properties-specified) –