如何在spring配置多个数据源

给你一个例子：
context.xml

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-2.0.xsd">












package util;

public class DbContextHolder {
private static final ThreadLocal contextHolder = new ThreadLocal();

public static void setDbType(String dbType) {
contextHolder.set(dbType);
}

public static String getDbType() {
return (String) contextHolder.get();
}

public static void clearDbType() {
contextHolder.remove();
}
}

package util;

import java.sql.SQLException;

import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;

public class DynamicDataSource extends AbstractRoutingDataSource {
//static Logger log = Logger.getLogger("DynamicDataSource");
@Override
protected Object determineCurrentLookupKey() {
// TODO
return DbContextHolder.getDbType();
}

@Override
public boolean isWrapperFor(Class iface) throws SQLException {
// TODO Auto-generated method stub
return false;
}

@Override
public T unwrap(Class iface) throws SQLException {
// TODO Auto-generated method stub
return null;
}

}

测试程序：

DbContextHolder.setDbType("1");
UserDomain od = this.testService.queryUserAccount("admin");
System.out.println("username=="+od.getName());

DbContextHolder.setDbType("0");
d = this.testService.queryUserAccount("admin");

配置两个SessionFactory

在DAO定义时指定sessionFactory