<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="net.sourceforge.jtds.jdbc.Driver"> </property> <property name="url" value="jdbc:jtds:sqlserver://10.82.81.51:1433;databaseName=standards"> </property> <property name="username" value="youguess"></property> <property name="password" value="youguess"></property> </bean> <bean id="dataSource2" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="net.sourceforge.jtds.jdbc.Driver"> </property> <property name="url" value="jdbc:jtds:sqlserver://10.82.81.52:1433;databaseName=standards"> </property> <property name="username" value="youguess"></property> <property name="password" value="youguess"></property> </bean>
02写一个DynamicDataSource类继承AbstractRoutingDataSource,并实现determineCurrentLookupKey方法
package com.qingce.appweb.java.control.datasource; import java.sql.SQLFeatureNotSupportedException; import java.util.logging.Logger; import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource; public class DynamicDataSource extends AbstractRoutingDataSource { protected Object determineCurrentLookupKey() { return CustomerContextHolder.getCustomerType(); } public Logger getParentLogger() throws SQLFeatureNotSupportedException { // TODO Auto-generated method stub return null; } }
03:利用ThreadLocal解决线程安全问题
package com.zbb.core.util; public class CustomerContextHolder { public static final String DATA_SOURCE_A = "dataSource"; public static final String DATA_SOURCE_B = "dataSource2"; private static final ThreadLocal<String> contextHolder = new ThreadLocal<String>(); public static void setCustomerType(String customerType) { contextHolder.set(customerType); } public static String getCustomerType() { return contextHolder.get(); } public static void clearCustomerType() { contextHolder.remove(); } }
04:再次配置数据源
<bean id="dynamicDataSource" class="com.zbb.core.util.DynamicDataSource" > <property name="targetDataSources"> <map key-type="java.lang.String"> <entry value-ref="dataSource" key="dataSource"></entry> <entry value-ref="dataSource2" key="dataSource2"></entry> </map> </property> <property name="defaultTargetDataSource" ref="dataSource" > </property> </bean>
05:daoImpl中调用
CustomerContextHolder.setCustomerType(CustomerContextHolder.DATA_SOURCE_B);
或
CustomerContextHolder.setCustomerType(CustomerContextHolder.DATA_SOURCE_A);
参考学习 http://www.cnblogs.com/davidwang456/p/4318303.html