springboot-配置多个数据源

1、创建一个datasource包，新建DataSource1，DataSource2两个文件，通过注解来配置数据源

DataSource1：

DataSource2：

2、在application.properties文件配置两个数据源

3、两个测试的Service&Mapper

4、Controller调用

1、首先配置多个datasource

<!-- 主数据库的数据据源 -->

<bean id="masterDataSource" class="org.apache.commons.dbcp.BasicDataSource"

destroy-method="close">

<property name="driverClassName" value="oracle.jdbc.OracleDriver" />

<property name="url" value="jdbc:oracle:thin:@192.168.10.11:1521:trew" />

<property name="username" value="poi" />

<property name="password" value="poi" />

</bean>

<!-- 备份库的数据据源 -->

<bean id="slaveDataSource" class="org.apache.commons.dbcp.BasicDataSource"

destroy-method="close">

<property name="driverClassName" value="oracle.jdbc.OracleDriver" />

<property name="url" value="jdbc:oracle:thin:@192.168.10.12:1521:trew" />

<property name="username" value="poi2" />

<property name="password" value="poi2" />

</bean>

2、写一个DynamicDataSource类继承AbstractRoutingDataSource，并实现determineCurrentLookupKey方法

?

public class DynamicDataSource extends AbstractRoutingDataSource {

@SuppressWarnings("unused")

private Log logger = LogFactory.getLog(getClass())

@Override

protected Object determineCurrentLookupKey() {

return DbContextHolder.getDbType()

}

}

public class DbContextHolder {

@SuppressWarnings("rawtypes")

private static final ThreadLocal contextHolder = new ThreadLocal()

@SuppressWarnings("unchecked")

public static void setDbType(String dbType) {

contextHolder.set(dbType)

}

public static String getDbType() {

return (String) contextHolder.get()

}

public static void clearDbType() {

contextHolder.remove()

}

}

3. 配置动态数据源

<!--将DynamicDataSource Bean加入到Spring的上下文xml配置文件中去，同时配置DynamicDataSource的targetDataSources(多数据源目标)属性的Map映射。-->

<bean id="dataSource" class="cn.com.core.datasource.DynamicDataSource">

<property name="targetDataSources">

<map key-type="java.lang.String">

<entry key="masterDataSource" value-ref="masterDataSource" />

<entry key="slaveDataSource" value-ref="slaveDataSource" />

</map>

</property>

<property name="defaultTargetDataSource" ref="masterDataSource"/>

</bean>

4.使用动态数据源(hibernate)

<bean id="sessionFactory"

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

<property name="dataSource" ref="dataSource" />

<property name="lobHandler" ref="lobHandler"/>

<property name="eventListeners">

<map>

<entry key="post-insert">

<ref bean="logListener"/>

</entry>

<entry key="post-update">

<ref bean="logListener"/>

</entry>

<entry key="post-delete">

<ref bean="logListener"/>

</entry>

</map>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.Oracle10gDialect

<!-- org.hibernate.dialect.OracleDerbyDialect -->

</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>

<!--

<prop key="hibernate.hbm2ddl.auto">update</prop>

-->

<prop key="hibernate.cache.use_second_level_cache">false</prop>

<prop key="hibernate.cache.provider_class">

org.hibernate.cache.EhCacheProvider

</prop>

<prop key="hibernate.cache.use_query_cache">false</prop>

</props>

</property>

</bean>

使用Hibernate时的事务管理配置示例：

<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

bean>

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