标签：out driver pass private let 多个 ati com ase
有时候在一个项目中会连接多个数据库,需要在spring中配置多个数据源,最近就遇到了这个问题,由于我的项目之前是基于通用Dao的，配置的时候问题不断，这种方式和资源文件冲突；扫描映射文件的话，SqlSessionFactory的bean名字必须是sqlSessionFactory 他读不到sqlSessioNFactory2或者其他名字,最终解决方法如下：
1.在项目中加入如下类MultipleDataSource.java
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package com.etoak.util; import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource; public class MultipleDataSource extends AbstractRoutingDataSource { private static final ThreadLocal<String> dataSourceKey = new InheritableThreadLocal<String>(); public static void setDataSourceKey(String dataSource) { dataSourceKey.set(dataSource); } @Override protected Object determineCurrentLookupKey() { // TODO Auto-generated method stub return dataSourceKey.get(); } } |
spring配置文件如下：
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xsi:schemaLocation="http://www.springframework.org/schema/beans <context:component-scan base-package="com"/> <mvc:annotation-driven/> <context:property-placeholder location="classpath:db.properties"/> <bean id="ds1" class="org.springframework.jdbc.datasource.DriverManagerDataSource" p:driverClassName="${mysql.driver}" p:url="${mysql.url}" p:username="${mysql.username}" p:password="${mysql.password}"/> <bean id="ds2" class="org.springframework.jdbc.datasource.DriverManagerDataSource" p:driverClassName="${mysql2.driver}" p:url="${mysql2.url}" p:username="${mysql2.username}" p:password="${mysql2.password}"/> <bean id="multipleDataSource" class="com.etoak.util.MultipleDataSource"> <property name="defaultTargetDataSource" ref="ds1"/> <property name="targetDataSources"> <map> <entry key="ds1" value-ref="ds1"/> <entry key="ds2" value-ref="ds2"/> </map> </property> </bean> <bean id="sqlSessionFactory1" class="org.mybatis.spring.SqlSessionFactoryBean" p:dataSource-ref="multipleDataSource" p:mapperLocations="classpath:com/etoak/dao/*-mapper.xml"/> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.etoak.dao"/> <property name="markerInterface" value="com.etoak.dao.BaseDao" /> </bean> </beans> |
测试类如下：
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package com.etoak.test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.FileSystemXmlApplicationContext; import com.etoak.dao.ProductDaoIf; import com.etoak.util.MultipleDataSource; public class Test { public static void main(String[] args) { ApplicationContext ac = new FileSystemXmlApplicationContext("WebContent/WEB-INF/etoak-servlet.xml"); ProductDaoIf proDao = (ProductDaoIf)ac.getBean(ProductDaoIf.class); MultipleDataSource.setDataSourceKey("ds1"); int count1 = proDao.selectProductCount(); MultipleDataSource.setDataSourceKey("ds2"); int count2 = proDao.selectProductCount(); System.out.println(count1); System.out.println(count2); } } |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
标签：out driver pass private let 多个 ati com ase
原文地址：https://www.cnblogs.com/libin6505/p/10552911.html
