Hbnc3p0

<? 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:jee = "http://www.springframework.org/schema/jee"

    xsi:schemaLocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd

            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd " >

    < bean id = "dataSource"

        class = "com.mchange.v2.c3p0.ComboPooledDataSource"

        destroy-method = "close" >

         < property name = " driverClass " >

            < value > com.mysql.jdbc.Driver </ value >

        </ property >

         < property name = " jdbcUrl " >

            < value > jdbc:mysql://192.168.1.1:3306/DBName?useUnicode=true &amp; characterEncoding=GBK </ value >

        </ property >

         < property name = " user " >

            < value > root </ value >

        </ property >

         < property name = "password" >

            < value > root </ value >

        </ property >

 

 <!--连接池中保留的最小连接数。-->

        < property name = "minPoolSize" >

            < value > 5 </ value >

        </ property >

 

 <!--连接池中保留的最大连接数。Default: 15 -->

        < property name = "maxPoolSize" >

            < value > 30 </ value >

        </ property >

 

<!--初始化时获取的连接数，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->

        < property name = "initialPoolSize" >

            < value > 10 </ value >

        </ property >

 

 <!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->

        < property name = "maxIdleTime" >

            < value > 60 </ value >

        </ property >

 

 <!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->

         < property name = "acquireIncrement" >

            < value > 5 </ value >

        </ property >

 

 <!--JDBC的标准参数，用以控制数据源内加载的PreparedStatements数量。但由于预缓存的statements
  属于单个connection而不是整个连接池。所以设置这个参数需要考虑到多方面的因素。
  如果maxStatements与maxStatementsPerConnection均为0，则缓存被关闭。Default: 0-->

         < property name = "maxStatements" >

            < value > 0 </ value >

        </ property >

 

 <!--每60秒检查所有连接池中的空闲连接。Default: 0 -->

        < property name = "idleConnectionTestPeriod" >

            < value >6 0 </ value >

        </ property >

 

 <!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->

        < property name = "acquireRetryAttempts" >

            < value > 30 </ value >

        </ property >

 

 <!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效
  保留，并在下次调用getConnection()的时候继续尝试获取连接。如果设为true，那么在尝试
  获取连接失败后该数据源将申明已断开并永久关闭。Default: false-->

         < property name = "breakAfterAcquireFailure" >

            < value > true </ value >

        </ property >

 

 <!--因性能消耗大请只在需要的时候使用它。如果设为true那么在每个connection提交的
  时候都将校验其有效性。建议使用idleConnectionTestPeriod或automaticTestTable
  等方法来提升连接测试的性能。Default: false -->

         < property name = "testConnectionOnCheckout" >

            < value > false </ value >

        </ property >

    </ bean >

    <!-- Hibernate SessionFactory -->

    < bean id = "sessionFactory"

        class = "org.springframework.orm.hibernate3.LocalSessionFactoryBean" >

        < property name = "dataSource" >

            < ref local = "dataSource" />

        </ property >

        < property name = "mappingResources" >

            < list >

                < value > com/xh/hibernate/vo/User.hbm.xml </ value >

            </ list >

        </ property >

        < property name = "hibernateProperties" >

            < props >

                < prop key = "hibernate.dialect" > org.hibernate.dialect.MySQLDialect </ prop >

                < prop key = "hibernate.show_sql" > true </ prop >

                < prop key = "hibernate.generate_statistics" > true </ prop >

                < prop key = "hibernate.connection.release_mode" > auto </ prop >

                < prop key = "hibernate.autoReconnect" > true </ prop >

            </ props >

        </ property >

    </ bean >

</ beans >