Spring+Hibernate3+Proxool

最新推荐文章于 2016-06-15 10:11:12 发布

不忘初心：）

最新推荐文章于 2016-06-15 10:11:12 发布

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文章标签： hibernate spring 数据库连接池 hsqldb properties 测试

在hibernate3.0中，已经不再支持dbcp了，hibernate的作者在hibernate.org中，
明确指出在实践中发现dbcp有BUG,在某些种情会产生很多空连接不能释放，
所以Spring+Hibernate3+Proxool是目前较为稳定的架构：

三者的配置文件可以分开，也可以写在一起：

前两者的配置文件就不做描述了，

主要介绍一下Proxool

<?xml version="1.0" encoding="gb2312"?>
<something-else-entirely>
<proxool>
<alias>pool1</alias>
<driver-url>
jdbc:mysql://tpdb:3306/tpdb
</driver-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<driver-properties>
<property name="user" value="username"/>
<property name="password" value="password"/>
<property name="schema" value="tpdb"/>
<property name="autoReconnect" value="true"/>
</driver-properties>
<!-- proxool自动侦察各个连接状态的时间间隔(毫秒),
侦察到空闲的连接就马上回收,超时的销毁-->
<house-keeping-sleep-time>90000</house-keeping-sleep-time>
<!-- 指因未有空闲连接可以分配而在队列中等候的最大请求数,超过这个请求数的
用户连接就不会被接受(正式库10，测试库1)-->
<maximum-new-connections>10</maximum-new-connections>
<prototype-count>10</prototype-count>
<maximum-connection-count>700</maximum-connection-count>
<minimum-connection-count>350</minimum-connection-count>
<maximum-active-time>900000</maximum-active-time>
<maximum-connection-lifetime>14400000</maximum-connection-lifetime>
<test-before-use>true</test-before-use>
<house-keeping-test-sql>select sysdate() from dual</house-keeping-test-sql>
</proxool>
</something-else-entirely>

sping + proxool 配置在同一个applicationContext中

proxool ：

<bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource" destroy-method="close">
<property name="driver">
   <value>${jdbc.driverClassName}</value>
        </property>
        <property name="driverUrl">
   <value>${jdbc.url}</value>
        </property>
        <property name="user">
   <value>${jdbc.username}</value>
        </property>
        <property name="password">
   <value>${jdbc.password}</value>
        </property>
        <property name="alias">
   <value>spring_pro_pool</value>
        </property>

        
        <property name="houseKeepingSleepTime">
        <value>90000</value>
       </property>
       
       <property name="maximumActiveTime">
        <value>900000</value>
       </property>
       
        <property name="maximumConnectionLifetime">
        <value>14400000</value>
       </property>

       
       <property name="prototypeCount">
   <value>10</value>
        </property>
        <property name="minimumConnectionCount">
   <value>10</value>
        </property>
        <property name="maximumConnectionCount">
   <value>300</value>
        </property>
        
        <property name="maximumNewConnections">
   <value>100</value>
        </property>
         
        <property name="testBeforeUse">
   <value>true</value>
        </property>
         
        <property name="houseKeepingTestSql">
   <value>select 1 from dual</value>
        </property>
        <property name="simultaneousBuildThrottle">
         <value>20</value>
        </property>
    </bean>

sping ：





<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</prop>
    
                <prop key="hibernate.connection.useUnicode">true</prop>
                <prop key="hibernate.connection.characterEncoding">UTF-8</prop>
                <prop key="hibernate.query.substitutions">true 1, false 0, yes 'Y', no 'N'</prop>
                <prop key="hibernate.query.factory_class">org.hibernate.hql.ast.ASTQueryTranslatorFactory</prop>
                <prop key="hibernate.generate_statistics">true</prop>
                <prop key="hibernate.use_outer_join">true</prop>

                <prop key="hibernate.cglib.use_reflection_optimizer">false</prop>
    <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>
    <prop key="hibernate.cache.use_query_cache">true</prop>
       <prop key="hibernate.show_sql">false</prop>
       

   </props>
</property>

proxool.xml的配置属性说明:

<?xml version="1.0" encoding="ISO-8859-1"?>

<!--

Properties for Proxool Configurator testing. Defines the same parameters as

TestHelper.buildCompleteAlternativeProperties()

-->

<something-else-entirely xmlns="http://sumthin.else.entirely" xmlns:proxool="The latest version is available at http://proxool.sourceforge.net/xml-namespace">

<proxool:proxool>

<proxool:alias>xml-test-ns</proxool:alias>

<proxool:driver-url>jdbc:hsqldb:db/test</proxool:driver-url>

<proxool:driver-class>org.hsqldb.jdbcDriver</proxool:driver-class>

<proxool:driver-properties>

<proxool:property name="user" value="sa"/>

<proxool:property name="password" value=""/>

</proxool:driver-properties>

<proxool:house-keeping-sleep-time>40000</proxool:house-keeping-sleep-time>

<proxool:house-keeping-test-sql>select CURRENT_DATE</proxool:house-keeping-test-sql>

<proxool:maximum-connection-count>10</proxool:maximum-connection-count>

<proxool:minimum-connection-count>3</proxool:minimum-connection-count>

<proxool:maximum-connection-lifetime>18000000</proxool:maximum-connection-lifetime>

<proxool:simultaneous-build-throttle>5</proxool:simultaneous-build-throttle>

<proxool:recently-started-threshold>40000</proxool:recently-started-threshold>

<proxool:overload-without-refusal-lifetime>50000</proxool:overload-without-refusal-lifetime>

<proxool:maximum-active-time>60000</proxool:maximum-active-time>

<proxool:verbose>true</proxool:verbose>

<proxool:trace>true</proxool:trace>

<proxool:fatal-sql-exception>Fatal error</proxool:fatal-sql-exception>

<proxool:prototype-count>2</proxool:prototype-count>

</proxool:proxool>

<nothing-to-do-with-proxool>

<proxool:proxool>

<proxool:alias>xml-test-ns-2</proxool:alias>