springMVC多数据源使用 跨库跨连接http://www.bieryun.com/1244.html
有的时候项目中可能要从另外一个系统取数据 如果另外一个系统能提供接口就很好解决 如果没有接口 便可以配置多个数据源切换访问
<1>:这是数据源和事务扫描注入的配置 访问多个数据源只需要建立多个数据源和事务这一套配置文件
这是第一个数据源
- <?xml version="1.0" encoding="UTF-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xmlns:context="http://www.springframework.org/schema/context"
- xmlns:jdbc="http://www.springframework.org/schema/jdbc"
- xmlns:jee="http://www.springframework.org/schema/jee"
- xmlns:tx="http://www.springframework.org/schema/tx"
- xmlns:aop="http://www.springframework.org/schema/aop"
- xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
- xsi:schemaLocation="
- http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
- http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
- http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
- http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
- http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
- http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd
- http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
- http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd"
- default-lazy-init="true">
- <description>Spring公共配置 </description>
- <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
- <property name="locations">
- <list>
- <value>classpath:resources.properties</value>
- <!-- <value>classpath:memcached.properties</value> -->
- </list>
- </property>
- </bean>
- <!-- dubbo配置 -->
- <!-- <dubbo:application name="xaUserRegPro" />
- <dubbo:registry address="multicast://" />
- <dubbo:reference id="userRegProService" interface="com.xinnet.xa.service.UserRegProService" timeout="6000"/> -->
- <!-- **************** druid 监控连接池配置 ***************** -->
- <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
- <!-- 基本属性 url、user、password -->
- <property name="url" value="${url}" />
- <property name="username" value="${username}" />
- <property name="password" value="${password}" />
- <!-- 配置初始化大小、最小、最大 -->
- <property name="initialSize" value="${initialSize}" />
- <property name="minIdle" value="${minIdle}" />
- <property name="maxActive" value="${maxActive}" />
- <!-- 配置获取连接等待超时的时间 -->
- <property name="maxWait" value="${maxWait}" />
- <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
- <property name="timeBetweenEvictionRunsMillis" value="60000" />
- <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
- <property name="minEvictableIdleTimeMillis" value="300000" />
- <property name="validationQuery" value="SELECT 'x'" />
- <property name="testWhileIdle" value="true" />
- <property name="testOnBorrow" value="false" />
- <property name="testOnReturn" value="false" />
- <!-- 打开PSCache,并且指定每个连接上PSCache的大小 -->
- <!-- 如果用Oracle,则把poolPreparedStatements配置为true,mysql可以配置为false。分库分表较多的数据库,建议配置为false -->
- <property name="poolPreparedStatements" value="${poolPreparedStatements}" />
- <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
- <!-- 对泄漏的连接 自动关闭 -->
- <property name="removeAbandoned" value="${removeAbandoned}" /> <!-- 打开removeAbandoned功能 -->
- <property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" /> <!-- 1800秒,也就是30分钟 -->
- <property name="logAbandoned" value="${logAbandoned}" /> <!-- 关闭abanded连接时输出错误日志 -->
- <!-- 配置监控统计拦截的filters -->
- <property name="filters" value="mergeStat" />
- <!-- <property name="filters" value="stat" /> -->
- <!-- 慢日志查询 缺省为3秒 修改为10秒 10000 -->
- <property name="connectionProperties" value="druid.stat.slowSqlMillis=5000" />
- <!-- DruidDataSource各自独立 , 支持配置公用监控数据 -->
- <!-- <property name="useGloalDataSourceStat" value="true" /> -->
- </bean>
- <!-- druid 监控 spring -->
- <bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"/>
- <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">
- <property name="patterns">
- <list>
- <value>com.xinnet.*.service.*</value>
- </list>
- </property>
- </bean>
- <aop:config>
- <aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />
- </aop:config>
- <!-- MyBatis Mapper.XMl 配置 -->
- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
- <property name="dataSource" ref="dataSource" />
- <property name="configLocation" value="classpath:config/mybatis.xml" />
- <property name="mapperLocations">
- <list>
- <!-- 自动匹配Mapper映射文件 -->
- <value>classpath:mapper/**/*-mapper.xml</value>
- </list>
- </property>
- <!-- 添加插件 -->
- <property name="plugins">
- <array>
- <ref bean="pagePlugin" />
- </array>
- </property>
- </bean>
- <!-- 支持文件上传相关 -->
- <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
- <!-- 分页插件,根据方言自动添加分页信息,默认要求 -->
- <bean id="pagePlugin" class="com.xinnet.core.mybatis.plugin.PagePlugin">
- <property name="properties">
- <props>
- <prop key="dialect">com.xinnet.core.mybatis.dialet.MySQLDialect</prop>
- <prop key="pageSqlId">.*query.*</prop>
- </props>
- </property>
- </bean>
- <!-- redis客户端 -->
- <!-- jedis pool配置 -->
- <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
- <property name="maxActive" value="${redis.maxActive}" />
- <property name="maxIdle" value="${redis.maxIdle}" />
- <property name="maxWait" value="${redis.maxWait}" />
- <property name="testOnBorrow" value="${redis.testOnBorrow}" />
- </bean>
- <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
- <property name="usePool" value="true"></property>
- <property name="hostName" value="${redis.host}" />
- <property name="port" value="${redis.port}" />
- <property name="password" value="${redis.pass}" />
- <property name="timeout" value="${redis.timeout}" />
- <property name="database" value="${redis.default.db}"></property>
- <constructor-arg index="0" ref="jedisPoolConfig" />
- </bean>
- <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
- <property name="connectionFactory" ref="jedisConnectionFactory" />
- </bean>
- <!-- ***************事务配置************** -->
- <tx:annotation-driven transaction-manager="transactionManager"/>
- <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
- <property name="dataSource" ref="dataSource" />
- </bean>
- <aop:config>
- <aop:advisor pointcut="execution(* com.xinnet..service..*.*(..))" advice-ref="txAdvice" />
- </aop:config>
- <tx:advice id="txAdvice" transaction-manager="transactionManager">
- <tx:attributes>
- <tx:method name="get*" read-only="true" />
- <tx:method name="query*" read-only="true" />
- <tx:method name="find*" read-only="true" />
- <tx:method name="load*" read-only="true" />
- <tx:method name="select*" read-only="true" />
- <tx:method name="count*" read-only="true" />
- <tx:method name="search*" read-only="true" />
- <tx:method name="list*" read-only="true" />
- <tx:method name="*" propagation="REQUIRED" rollback-for="Exception" />
- </tx:attributes>
- </tx:advice>
- <aop:aspectj-autoproxy proxy-target-class="true"/>
- <!-- 开启注解事务 只对当前配置文件有效 -->
- <!-- 扫描注解Bean -->
- <context:component-scan base-package="com.xinnet">
- <context:include-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
- <context:include-filter type="annotation" expression="org.springframework.stereotype.Service"/>
- <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
- </context:component-scan>
- <!-- 隐式地向 Spring 容器注册 -->
- <context:annotation-config/>
- </beans>
<2>这是第二个数据源 和第一个数据源一样 需要有事务 扫描注解
不同的是数据源的 url username 和password 用的是第二个数据源的连接 用户名和密码
- <?xml version="1.0" encoding="UTF-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xmlns:context="http://www.springframework.org/schema/context"
- xmlns:jdbc="http://www.springframework.org/schema/jdbc"
- xmlns:jee="http://www.springframework.org/schema/jee"
- xmlns:tx="http://www.springframework.org/schema/tx"
- xmlns:aop="http://www.springframework.org/schema/aop"
- xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
- xsi:schemaLocation="
- http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
- http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
- http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
- http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
- http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
- http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd
- http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
- http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd"
- default-lazy-init="true">
- <description>Spring公共配置 </description>
- <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
- <property name="locations">
- <list>
- <value>classpath:resources.properties</value>
- <!-- <value>classpath:memcached.properties</value> -->
- </list>
- </property>
- </bean>
- <!-- **************** druid 监控连接池配置 ***************** -->
- <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
- <!-- 基本属性 url、user、password -->
- <property name="url" value="${url2}" />
- <property name="username" value="${username2}" />
- <property name="password" value="${password2}" />
- <!-- 配置初始化大小、最小、最大 -->
- <property name="initialSize" value="${initialSize}" />
- <property name="minIdle" value="${minIdle}" />
- <property name="maxActive" value="${maxActive}" />
- <!-- 配置获取连接等待超时的时间 -->
- <property name="maxWait" value="${maxWait}" />
- <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
- <property name="timeBetweenEvictionRunsMillis" value="60000" />
- <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
- <property name="minEvictableIdleTimeMillis" value="300000" />
- <property name="validationQuery" value="SELECT 'x'" />
- <property name="testWhileIdle" value="true" />
- <property name="testOnBorrow" value="false" />
- <property name="testOnReturn" value="false" />
- <!-- 打开PSCache,并且指定每个连接上PSCache的大小 -->
- <!-- 如果用Oracle,则把poolPreparedStatements配置为true,mysql可以配置为false。分库分表较多的数据库,建议配置为false -->
- <property name="poolPreparedStatements" value="${poolPreparedStatements}" />
- <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
- <!-- 对泄漏的连接 自动关闭 -->
- <property name="removeAbandoned" value="${removeAbandoned}" /> <!-- 打开removeAbandoned功能 -->
- <property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" /> <!-- 1800秒,也就是30分钟 -->
- <property name="logAbandoned" value="${logAbandoned}" /> <!-- 关闭abanded连接时输出错误日志 -->
- <!-- 配置监控统计拦截的filters -->
- <property name="filters" value="mergeStat" />
- <!-- <property name="filters" value="stat" /> -->
- <!-- 慢日志查询 缺省为3秒 修改为10秒 10000 -->
- <property name="connectionProperties" value="druid.stat.slowSqlMillis=5000" />
- <!-- DruidDataSource各自独立 , 支持配置公用监控数据 -->
- <!-- <property name="useGloalDataSourceStat" value="true" /> -->
- </bean>
- <!-- druid 监控 spring -->
- <bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"/>
- <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">
- <property name="patterns">
- <list>
- <value>com.xinnet.*.service.*</value>
- </list>
- </property>
- </bean>
- <aop:config>
- <aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />
- </aop:config>
- <!-- MyBatis Mapper.XMl 配置 -->
- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
- <property name="dataSource" ref="dataSource" />
- <property name="configLocation" value="classpath:config/mybatis.xml" />
- <property name="mapperLocations">
- <list>
- <!-- 自动匹配Mapper映射文件 -->
- <value>classpath:mapper/**/*-mapper.xml</value>
- </list>
- </property>
- <!-- 添加插件 -->
- <property name="plugins">
- <array>
- <ref bean="pagePlugin" />
- </array>
- </property>
- </bean>
- <!-- 支持文件上传相关 -->
- <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
- <!-- 分页插件,根据方言自动添加分页信息,默认要求 -->
- <bean id="pagePlugin" class="com.xinnet.core.mybatis.plugin.PagePlugin">
- <property name="properties">
- <props>
- <prop key="dialect">com.xinnet.core.mybatis.dialet.MySQLDialect</prop>
- <prop key="pageSqlId">.*query.*</prop>
- </props>
- </property>
- </bean>
- <!-- redis客户端 -->
- <!-- jedis pool配置 -->
- <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
- <property name="maxActive" value="${redis.maxActive}" />
- <property name="maxIdle" value="${redis.maxIdle}" />
- <property name="maxWait" value="${redis.maxWait}" />
- <property name="testOnBorrow" value="${redis.testOnBorrow}" />
- </bean>
- <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
- <property name="usePool" value="true"></property>
- <property name="hostName" value="${redis.host}" />
- <property name="port" value="${redis.port}" />
- <property name="password" value="${redis.pass}" />
- <property name="timeout" value="${redis.timeout}" />
- <property name="database" value="${redis.default.db}"></property>
- <constructor-arg index="0" ref="jedisPoolConfig" />
- </bean>
- <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
- <property name="connectionFactory" ref="jedisConnectionFactory" />
- </bean>
- <!-- ***************事务配置************** -->
- <tx:annotation-driven transaction-manager="transactionManager"/>
- <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
- <property name="dataSource" ref="dataSource" />
- </bean>
- <aop:config>
- <aop:advisor pointcut="execution(* com.xinnet..service..*.*(..))" advice-ref="txAdvice" />
- </aop:config>
- <tx:advice id="txAdvice" transaction-manager="transactionManager">
- <tx:attributes>
- <tx:method name="get*" read-only="true" />
- <tx:method name="query*" read-only="true" />
- <tx:method name="find*" read-only="true" />
- <tx:method name="load*" read-only="true" />
- <tx:method name="select*" read-only="true" />
- <tx:method name="count*" read-only="true" />
- <tx:method name="search*" read-only="true" />
- <tx:method name="list*" read-only="true" />
- <tx:method name="*" propagation="REQUIRED" rollback-for="Exception" />
- </tx:attributes>
- </tx:advice>
- <aop:aspectj-autoproxy proxy-target-class="true"/>
- <!-- 开启注解事务 只对当前配置文件有效 -->
- <!-- 扫描注解Bean -->
- <context:component-scan base-package="com.xinnet">
- <context:include-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
- <context:include-filter type="annotation" expression="org.springframework.stereotype.Service"/>
- <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
- </context:component-scan>
- <!-- 隐式地向 Spring 容器注册 -->
- <context:annotation-config/>
- </beans>
<3>这个时候就可以用两个数据源进行切换注入 从而使用不同数据源的service
这是service里面的方法 该怎么写就是怎么写 该怎么注解就怎么注解 不用做特殊的步骤
- @Service("partyService")
- public class PartyServiceImpl implements PartyService {
- @Autowired
- private PartyDao partyDao;
- @Override
- public List<Emp> getAllEmp() throws SQLException {
- return partyDao.getAllEmp();
- }
- }
Dao层也是一样 该怎么写就怎么写 该怎么注解就怎么注解
然后可以写一个测试类试一下连接
- @RunWith(SpringJUnit4ClassRunner.class)
- @ContextConfiguration(locations = { "classpath:spring.xml" })//这里的spring.xml加载了第一个数据源 spring-commons.xml
- public class DataSourceTest extends AbstractTransactionalJUnit4SpringContextTests {
- /**
- *
- * 功能描述:xxxxx
- *
- * @throws SQLException
- *
- * @author xxx[973893384@163.com]
- *
- * @since 2014年3月12日
- *
- * @update:[变更日期YYYY-MM-DD][更改人姓名][变更描述]
- */
- @Test
- @Rollback(true)
- public void testGetAllEmp() throws SQLException {
- ApplicationContext ac = new FileSystemXmlApplicationContext("classpath:config/hymanager/hymanager_spring.xml");//这里加载的是第二个数据源配置文件路径 使用的时候用application 读取第二个数据源的配置文件 就可以用getBean 获取注入的service 不用ac.getBean 用@Autowired自动注入的 则使用的是第一个数据源
- PartyService partyService = (PartyService) ac.getBean("partyService");
- List<Emp> list = partyService.getAllEmp();
- for (Emp emp : list) {
- System.out.println(emp.getEmpno());
- }
- }
这样就可以封装一个父类
- public class DataSourceChange {
- //第二个数据源数据源
- public ApplicationContext otherDataSource=new FileSystemXmlApplicationContext("classpath:config/hymanager/hymanager_spring.xml");
- //默认数据源
- public ApplicationContext defaultDataSource=new FileSystemXmlApplicationContext("classpath:config/spring_commons.xml");
- /**
- *
- * 功能描述:xxxx
- *
- * @param beanName
- * @return
- *
- * @author xxx[973893384@163.com]
- *
- * @since 2014年3月12日
- *
- * @update:[变更日期YYYY-MM-DD][更改人姓名][变更描述]
- */
- public Object now(String beanName) {
- return defaultDataSource.getBean(beanName);
- }
- public Object after(String beanName) {
- return otherDataSource.getBean(beanName);
- }
- }
要使用多个数据源的类就可以继承这个父类
- public class HyMangerEmpDataHandle extends DataSourceChange {
- //用父类的after方法更换配置切换第二套数据源获取注入partyService
- private PartyService partyService=(PartyService) after("partyService");
- //<span style="font-family:Arial, Helvetica, sans-serif;">用父类的now方法</span>更换配置切换第一套数据源获取注入empService
- private EmpService empService=(EmpService) now("empService");
- private static Logger log=LoggerFactory.getLogger(PartyService.class);
- /**
- *
- * 功能描述:xxxxx
- *
- * @throws SQLException
- *
- * @author xxx[973893384@163.com]
- *
- * @since 2014年3月12日
- *
- * @update:[变更日期YYYY-MM-DD][更改人姓名][变更描述]
- */
- public void leadingAllEmp() throws SQLException {
- List<Emp> partyList=partyService.getAllEmp();//第二个数据源注入的service
- for(Emp emp:partyList) {
- empService.addEmp(emp);//第一个数据源注入的service
- }
- }
- }