Spring與休眠連接池

Question

如何使用Spring和Hibernate配置連接池？

感謝

VENU

Answer 1

如果你在一個Web應用程序容器中運行，使用內置在你的容器的連接池。

否則，使用Apache DBCP：http://commons.apache.org/dbcp/

Answer 2

在Hibernate中，您可以在Hibernate的配置CP30連接池。查看教程here。 IBM有一個很好的教程，如何integrate Hibernate with Spring。

Answer 3

您可以使用DBCP組件

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" 
     destroy-method="close"> 

     <property name="driverClassName" value="${jdbc.driverClassName}" /> 
     <property name="url" value="${jdbc.url}" /> 
     <property name="username" value="${jdbc.username}" /> 
     <property name="password" value="${jdbc.password}" /> 
     <property name="initialSize" value="10" /> 
     <property name="maxActive" value="5" /> 
     <property name="maxWait" value="5000" /> 
    </bean> 


    <!-- Hibernate Configuration --> 
    <bean id="sessionFactory" 
     class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean" 
     p:dataSource-ref="dataSource"> 
     <property name="annotatedClasses"> 
      <list> 
       <value>com.project.domain.Domain1</value> 
       <value>com.project.domain.Domain1</value> 
      </list> 
     </property> 
     <property name="hibernateProperties"> 
      <props> 
       <prop key="hibernate.dialect"> 
        ${hibernate.dialect} 
       </prop> 
       <prop key="hibernate.show_sql"> 
        ${hibernate.show_sql} 
       </prop> 
       <prop key="hibernate.generate_statistics"> 
        ${hibernate.show_statistics} 
       </prop> 
      </props> 
     </property> 
    </bean> 

Answer 4

<bean id="dataSource" 
class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
<property name="url" value="<put database connection url here>" /> 
<property name="username" value="XXXXXX" /> 
<property name="password" value="XXXXXXXX" /> 
<property name="driverClassName" value="<database driver here>" /> 
</bean> 

<bean id="pool" class="org.apache.commons.pool.impl.GenericObjectPool"> 
<property name="minEvictableIdleTimeMillis"><value>300000</value></property> 
<property name="timeBetweenEvictionRunsMillis"><value>60000</value></property> 
</bean> 

<bean id="dsConnectionFactory" class="org.apache.commons.dbcp.DataSourceConnectionFactory"> 
<constructor-arg><ref bean="dataSource"/></constructor-arg> 
</bean> 

<bean id="poolableConnectionFactory" class="org.apache.commons.dbcp.PoolableConnectionFactory"> 
<constructor-arg index="0"><ref bean="dsConnectionFactory"/></constructor-arg> 
<constructor-arg index="1"><ref bean="pool"/></constructor-arg> 
<constructor-arg index="2"><null/></constructor-arg> 
<constructor-arg index="3"><null/></constructor-arg> 
<constructor-arg index="4"><value>false</value></constructor-arg> 
<constructor-arg index="5"><value>true</value></constructor-arg> 
</bean> 

<bean id="pooledDS" class="org.apache.commons.dbcp.PoolingDataSource" depends-on="poolableConnectionFactory"> 
<constructor-arg><ref bean="pool"/></constructor-arg> 
</bean> 

Answer 5

如果您想使用最佳所有Java連接池提供商之間嘗試HikariCP。 配置在servlet的環境中使用HikariCP作爲數據源的bean：

<beans:bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource" destroy-method="close"> 
       <beans:property name="dataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlDataSource"/> 
       <beans:property name="maximumPoolSize" value="5" /> 
       <beans:property name="maxLifetime" value="30000" /> 
       <beans:property name="idleTimeout" value="30000" /> 
       <beans:property name="dataSourceProperties"> 
          <beans:props> 
           <beans:prop key="url">jdbc:mysql://localhost:3306/exampledb</beans:prop> 
           <beans:prop key="user">root</beans:prop> 
           <beans:prop key="password"></beans:prop> 
           <beans:prop key="prepStmtCacheSize">250</beans:prop> 
           <beans:prop key="prepStmtCacheSqlLimit">2048</beans:prop> 
           <beans:prop key="cachePrepStmts">true</beans:prop> 
           <beans:prop key="useServerPrepStmts">true</beans:prop> 
          </beans:props> 
       </beans:property> 
</beans:bean> 

然後用這個數據源創建EntityManagerFactory的豆。 與示例項目完整示例下載可以在鏈接中找到：http://frameworkonly.com/hikaricp-connection-pooling-in-spring-hibernate-jpa/