SSH配置多个数据源

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SSH配置多个数据源

1. 编写hibernate的数据库配置文

Mysql_hibernate.cfg.xml代码收藏代码

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="show_sql">true</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://172.16.11.9:3306/mytest?useUnicode=true&characterEncoding=utf-8</property>
<property name="connection.username">root</property>
<property name="connection.password">rootroot</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.min_size">1</property>
<property name="hibernate.c3p0.timeout">5000</property>
<property name="hibernate.c3p0.max_statements">100</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property name="hibernate.c3p0.acquire_increment">2</property>
<!--
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
-->
<property name="dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
<property name="hbm2ddl.auto">create</property>
<property name="hibernate.current_session_context_class">thread</property>
<mapping resource="com/test/bean/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>

Sqlserver_hibernate.cfg.xml代码收藏代码

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">com.microsoft.jdbc.sqlserver.SQLServerDriver</property>
<property name="connection.url">jdbc:microsoft:sqlserver://172.16.11.20:1433;DatabaseName=new_cmcc;SelectMethod=cursor</property>
<property name="connection.username">sa</property>
<property name="connection.password">111</property>
<property name="connection.pool_size">100</property>
<property name="show_sql">true</property>
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
<mapping resource="com/test/bean/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>

Oracle_hibernate.cfg.xml代码收藏代码

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>
<property name="connection.url">jdbc:oracle:thin:@172.16.11.14:1521:epip</property>
<property name="connection.username">capitel</property>
<property name="connection.password">123456</property>
<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="show_sql">false</property>
<mapping resource="com/test/bean/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>

2. 在spring配置文件(applicationContext.xml)中配置Hibernate数据源(以测试过的三个数据库oralce,mysql,server sql为例)

Applicationcontext.xml代码收藏代码

<bean id="mySqlSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>WEB-INF/classes/mysql_hibernate.cfg.xml</value>
</property>
</bean>
<bean id="mySqlTransactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="mySqlSessionFactory" />
</property>
</bean>
<bean id="sqlServerSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>WEB-INF/classes/sqlserver_hibernate.cfg.xml</value>
</property>
</bean>
<bean id="sqlServerTransactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sqlServerSessionFactory" />
</property>
</bean>
<bean id="oracleSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>WEB-INF/classes/oracle_hibernate.cfg.xml</value>
</property>
</bean>
<bean id="oracleTransactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="oracleSessionFactory" />
</property>
</bean>

3. 在spring配置文件(applicationContext.xml)中配置spring的事务拦截器(AOP):

Applicationcontext.xml代码收藏代码

<tx:advice id="mySqlTxAdvice" transaction-manager="mySqlTransactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="get*" read-only="true"/>
<tx:method name="notx*" propagation="NEVER"/>
<tx:method name="*" rollback-for="自定义Exception"/>
</tx:attributes>
</tx:advice>
<tx:advice id="sqlServerTxAdvice" transaction-manager="sqlServerTransactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="get*" read-only="true"/>
<tx:method name="notx*" propagation="NEVER"/>
<tx:method name="*" rollback-for="自定义Exception"/>
</tx:attributes>
</tx:advice>
<tx:advice id="oracleTxAdvice" transaction-manager="oracleTransactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="get*" read-only="true"/>
<tx:method name="notx*" propagation="NEVER"/>
<tx:method name="*" rollback-for="自定义Exception"/>
</tx:attributes>
</tx:advice>
<bean id="serviceAutoProxyCreator" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
<property name="beanNames">
<list>
<value>*Service</value>
</list>
</property>
<property name="interceptorNames">
<list>
<value>mySqlTxAdvice</value>
<value>sqlServerTxAdvice</value>
<value>oracleTxAdvice</value>
</list>
</property>
</bean>

4. DAO需要使用哪个数据,就配置相应的sessionFactory,如:

Java代码

<bean id="userDao" class="com.test.dao.impl.UserDAOImpl" scope="singleton">
<property name="sessionFactory">
<ref bean="oracleSessionFactory"/>
</property>
</bean>
<bean id="emplyDAO" class=" com.test.dao.dao.impl.Pb_EmplyDAOImpl" scope="singleton">
<property name="sessionFactory">
<ref bean="mySqlSessionFactory"/>
</property>
</bean>