在ssh项目中的applicationContext.xml中配置数据源（c3p0）(连接池)

 

 

部分代码来自网上，黄绿色的字体就是c3p0 sqlserver2000连接池的设置，其中特别注意的是''driverClass', 'jdbcUrl', 'user' , 'password'区分大小写 ,并且要把c3p0-0.9.1-pre6.jar放到classpath中;

1.sqlserver2000

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

<!-- Hibernate SessionFactory -->
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource">
            <ref local="dataSource" />
        </property>
        <property name="mappingResources">
            <list>
                <value>com/oy/image/model/LoginUser.hbm.xml</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</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>

 

 <bean id="dataSource"
        class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close">
        <property name="driverClass">
            <value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value>
        </property>
        <property name="jdbcUrl">
            <value>jdbc:microsoft:sqlserver://localhost:1433;databaseName=users</value>
        </property>
        <property name="user">
            <value>bruce</value>
        </property>
        <property name="password">
            <value>bruce</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>60</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>
 <bean id="imageDao" name="imageDao"
  class="com.oy.image.dao.hibernate.ImageDaoHibernate" abstract="false"
  lazy-init="default" autowire="default" dependency-check="default">
  <property name="sessionFactory">
   <ref bean="sessionFactory" />
  </property>
 </bean>
 <bean id="imageManager" name="imageManager"
  class="com.oy.image.service.impl.ImageManagerImpl" abstract="false"
  lazy-init="default" autowire="default" dependency-check="default">
  <property name="imageDao">
   <ref bean="imageDao" />
  </property>
 </bean>
 
</beans>

2.mysql

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-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://192.168.0.1:3306/DBName?useUnicode=true&amp;characterEncoding=UTF-8
   </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>60</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/oy/image/model/LoginUser.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>

 

 <bean id="imageDao" name="imageDao"
  class="com.oy.image.dao.hibernate.ImageDaoHibernate" abstract="false"
  lazy-init="default" autowire="default" dependency-check="default">
  <property name="sessionFactory">
   <ref bean="sessionFactory" />
  </property>
 </bean>
 <bean id="imageManager" name="imageManager"
  class="com.oy.image.service.impl.ImageManagerImpl" abstract="false"
  lazy-init="default" autowire="default" dependency-check="default">
  <property name="imageDao">
   <ref bean="imageDao" />
  </property>
 </bean>
 </beans>

3.oracle

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
<bean id="dataSource"
        class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close" abstract="false"
        lazy-init="default" autowire="default" dependency-check="default">
        <property name="driverClass">
            <value>oracle.jdbc.driver.OracleDriver</value>
        </property>
        <property name="jdbcUrl">
            <value>jdbc:oracle:thin:@192.168.0.1:1521:orcl</value>
        </property>
        <property name="user">
            <value>username</value>
        </property>
        <property name="password">
            <value>password</value>
        </property>
        <property name="minPoolSize">
            <value>10</value>
        </property>
        <property name="maxPoolSize">
            <value>20</value>
        </property>
        <property name="initialPoolSize">
            <value>10</value>
        </property>
    </bean>

    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource">
            <ref bean="dataSource"></ref>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.OracleDialect
                </prop>
                <prop key="hibernate.show_sql">
                    false
                </prop>
                <prop key="hibernate.generate_statistics">true</prop>
                <prop key="hibernate.cache.use_query_cache">
                    true
                </prop>
                <prop key="hibernate.cache.use_second_level_cache">
                    true
                </prop>
                <prop key="hibernate.cache.provider_class">
                    net.sf.ehcache.hibernate.EhCacheProvider
                </prop>
                <prop key="hibernate.connection.provider_class">
                    org.hibernate.connection.C3P0ConnectionProvider
                </prop>
                <prop key="hibernate.query.substitutions">
                    true 1, false 0, yes 'Y', no 'N'
                </prop>
                <prop
                    key="hibernate.bytecode.use_reflection_optimizer">
                    true
                </prop>
                <prop key="hibernate.use_outer_join">true</prop>
                <prop key="hibernate.prepare_sql">true</prop>
                <prop key="hibernate.query.factory_class">
                    org.hibernate.hql.ast.ASTQueryTranslatorFactory
                </prop>
            </props>
        </property>

        <property name="mappingResources">
            <list>
                <value>xxx/xx/xx.hbm.xml</value>
                <value>xxx/xx/xx.hbm.xml</value>
            </list>
        </property>
    </bean>
   
   
 <bean id="imageDao" name="imageDao"
  class="com.oy.image.dao.hibernate.ImageDaoHibernate" abstract="false"
  lazy-init="default" autowire="default" dependency-check="default">
  <property name="sessionFactory">
   <ref bean="sessionFactory" />
  </property>
 </bean>
 <bean id="imageManager" name="imageManager"
  class="com.oy.image.service.impl.ImageManagerImpl" abstract="false"
  lazy-init="default" autowire="default" dependency-check="default">
  <property name="imageDao">
   <ref bean="imageDao" />
  </property>
 </bean>
    </beans>

 

转自http://blog.163.com/samoyed_kk/blog/static/853760092008526120434/