spring+mybatis 配置双数据源
Posted 10年 Java程序员,硬核人生!勇往直前,永不退缩!
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了spring+mybatis 配置双数据源相关的知识,希望对你有一定的参考价值。
配置好后,发现网上已经做好的了, 不过,跟我的稍有不同, 我这里再拿出来现个丑:
properties 文件自不必说,关键是这里的xml:
<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> <!-- 属性文件读入 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:dfintop.properties</value> </list> </property> </bean> <!-- 它背后注册了很多用于解析注解的处理器,其中就包括<context:annotation-config/>配置的注解所使用的处理器 --> <!-- 所以配置了<context:component-scan base-package="">之后,便无需再配置<context:annotation-config> --> <context:component-scan base-package="com.dffk.dfintop.**.controller,com.dffk.dfintop.**.service,com.dffk.dfintop.**.quartz,com.dffk.dfintop.**.shiro,com.dffk.dfintop.common.util,com.dffk.dfintop.common.listener,com.dffk.dfintop.framework.websocket,org.activiti.rest.editor"> <!-- <context:component-scan base-package="com.dffk.dfintop"> --> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <!-- <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> --> </context:component-scan> <!-- 启用SpringMVC的注解功能,它会自动注册HandlerMapping、HandlerAdapter、ExceptionResolver的相关实例 --> <mvc:annotation-driven/> <!-- json处理 --> <bean id="objectMapper" class="com.fasterxml.jackson.databind.ObjectMapper"></bean> <!-- 数据源配置, 使用 BoneCP 数据库连接池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 数据源驱动类可不写,Druid默认会自动根据URL识别DriverClass --> <property name="driverClassName" value="${jdbc.driver}" /> <!-- 基本属性 url、user、password --> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 配置初始化大小、最小、最大 --> <property name="initialSize" value="${jdbc.pool.init}" /> <property name="minIdle" value="${jdbc.pool.minIdle}" /> <property name="maxActive" value="${jdbc.pool.maxActive}" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="60000" /> <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="300000" /> <property name="validationQuery" value="${jdbc.testSql}" /> <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(Oracle使用) <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> --> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> </bean> <!-- 数据源配置, 使用 BoneCP 数据库连接池 --> <bean id="dataSource_2" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 数据源驱动类可不写,Druid默认会自动根据URL识别DriverClass --> <property name="driverClassName" value="${jdbc_2.driver}" /> <!-- 基本属性 url、user、password --> <property name="url" value="${jdbc_2.url}" /> <property name="username" value="${jdbc_2.username}" /> <property name="password" value="${jdbc_2.password}" /> <!-- 配置初始化大小、最小、最大 --> <property name="initialSize" value="${jdbc_2.pool.init}" /> <property name="minIdle" value="${jdbc_2.pool.minIdle}" /> <property name="maxActive" value="${jdbc_2.pool.maxActive}" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="60000" /> <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="300000" /> <property name="validationQuery" value="${jdbc_2.testSql}" /> <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(Oracle使用) <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> --> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> </bean> <bean id="dataBean" class="com.dffk.dfintop.common.util.DBUtils"> <property name="dataSource"> <ref bean="dataSource"/> </property> </bean> <bean id="dataBean_2" class="com.dffk.dfintop.common.util.DBUtils"> <property name="dataSource"> <ref bean="dataSource_2"/> </property> </bean> <!-- 创建SqlSessionFactory,同时指定数据源==org.mybatis.spring.SqlSessionFactoryBean== --> <bean id="sqlSessionFactory" class="com.dffk.dfintop.framework.system.mybatis.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="typeAliasesPackage" value="com.dffk.dfintop" /> <property name="mapperLocations" value="classpath:mapper/${jdbc.type}/**/*.xml" /> <property name="configLocation" value="classpath:mybatis-config.xml" /> </bean> <!-- 创建SqlSessionFactory,同时指定数据源==org.mybatis.spring.SqlSessionFactoryBean== --> <bean id="sqlSessionFactory_2" class="com.dffk.dfintop.framework.system.mybatis.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource_2" /> <property name="typeAliasesPackage" value="com.dffk.dfintop" /> <property name="mapperLocations" value="classpath:mapper/${jdbc_2.type}/**/*.xml" /> <property name="configLocation" value="classpath:mybatis-config.xml" /> </bean> <!-- 配置事务 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 配置事务 --> <bean id="transactionManager_2" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource_2" /> </bean> <!-- 配置 Annotation 驱动,扫描@Transactional注解的类定义事务 <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>--> <tx:annotation-driven transaction-manager="transactionManager" /> <tx:annotation-driven transaction-manager="transactionManager_2" /> <!-- 配置 JSR303 Bean Validator 定义 --> <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" /> <!-- scan mappers and let them be autowired --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.dffk.dfintop" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- scan mappers and let them be autowired --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.dffk.dfintop_2" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory_2"></property> </bean> <!-- swagger config --> <bean class="com.dffk.dfintop.common.swagger.MySwaggerConfig"/> <!-- 拦截器配置 <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**" /> <mvc:exclude-mapping path="/act/**"/> <mvc:exclude-mapping path="/assets/**"/> <mvc:exclude-mapping path="/bootstrap/**"/> <mvc:exclude-mapping path="/script/**"/> <mvc:exclude-mapping path="/static/**"/> <mvc:exclude-mapping path="/swagger/**"/> <mvc:exclude-mapping path="/ws/**"/> <mvc:exclude-mapping path="/api-docs/**"/> <mvc:exclude-mapping path="/ks/chart/**"/> <mvc:exclude-mapping path="/upload/**"/> <mvc:exclude-mapping path="/portal/**"/> <mvc:exclude-mapping path="/login/**"/> <mvc:exclude-mapping path="/cms/**"/> <mvc:exclude-mapping path="/sys/**"/> <mvc:exclude-mapping path="/"/> <bean class="com.dffk.dfintop.common.interceptor.AuthorityInterceptor" /> </mvc:interceptor> --> <!-- <mvc:interceptor> <mvc:mapping path="/**" /> <mvc:exclude-mapping path="/assets/**"/> <mvc:exclude-mapping path="/bootstrap/**"/> <mvc:exclude-mapping path="/script/**"/> <mvc:exclude-mapping path="/static/**"/> <mvc:exclude-mapping path="/swagger/**"/> <mvc:exclude-mapping path="/ws/**"/> <mvc:exclude-mapping path="/api-docs/**"/> <mvc:exclude-mapping path="/ks/chart/**"/> <mvc:exclude-mapping path="/upload/**"/> <mvc:exclude-mapping path="/portal/**"/> <mvc:exclude-mapping path="/sys/**"/> <mvc:exclude-mapping path="/information/**"/> <mvc:exclude-mapping path="/"/> <bean class="com.dffk.dfintop.common.interceptor.LogInterceptor" /> </mvc:interceptor> </mvc:interceptors>--> </beans>
因为,我们使用了 MapperScannerConfigurer ,dao bean是spring 动态生成的,我们可以不用写dao 实现了。 但是我们需要配置 MapperScannerConfigurer ,指向我们需要使用双数据源的 package, 这个package 最好和之前数据源不同, 以示区别 。
同时, 我们需要配置 transaction-manager ,这里的transaction-manager 是一个注解式的事务管理器。
dao 是可以不用写了。但是, 接口是必须的,我开始的时候是直接复制了原有的dao 接口, 但是发现有问题就是 dao 的bean 的name 和原有的发生冲突。 怎么办呢, 只有改名了, 我就直接加了个2:
/* * Powered By luokai * Since 2014 - 2017 */ package com.dffk.dfintop_2.credit; import com.dffk.dfintop.bussiness.credit.domain.CustomerInfo; import com.dffk.dfintop.common.exception.CRUDException; import com.dffk.dfintop.framework.system.domain.SysUser; import java.util.List; /** * @author luokai * @version 1.0 * @since 1.0 */ public interface CustomerInfoMapper2 { /** * 根据ID查询单条数据 * @param id * @return */ public CustomerInfo findOne(String id); /** * 查询数据集合 * @param customerInfo * @return */ public List<CustomerInfo> findList(CustomerInfo customerInfo); /** * 查询数据TREE * @param sysUser * @return * @throws CRUDException */ public List<CustomerInfo> findTree(SysUser sysUser); /** * 查询数据TREE * @param customerInfo * @return * @throws CRUDException */ public List<CustomerInfo> findAll(CustomerInfo customerInfo); /** * 查询数据总数 * @param customerInfo * @return */ public Integer findTotal(CustomerInfo customerInfo); /** * 数据新增 * @param customerInfo */ public void save(CustomerInfo customerInfo); /** * 数据修改 * @param customerInfo */ public void update(CustomerInfo customerInfo); /** * 数据删除 * @param listId */ public void delete(List<String> listId); }
然后就是使用了, 使用很简单, 通过@Autowired 注解就行了:
@Service public class XxxService extends BaseService { @Autowired private CustomerInfoMapper customerInfoMapper; @Autowired private ContractInfoMapper contractInfoMapper; @Autowired private ImageInfoMapper imageInfoMapper; @Autowired private BusinessIntoMapper businessIntoMapper; @Autowired private com.dffk.dfintop_2.credit.CustomerInfoMapper2 customerInfoMapper2; @Autowired private com.dffk.dfintop_2.credit.ContractInfoMapper2 contractInfoMapper2; @Autowired private com.dffk.dfintop_2.credit.ImageInfoMapper2 imageInfoMapper2; @Autowired private com.dffk.dfintop_2.credit.BusinessIntoMapper2 businessIntoMapper2; ... }
// 注,
BaseService 使用了 @Transactional 注解,也就是注解方式启用了事务管理器。
@Transactional(readOnly = false)
public abstract class BaseService {
}
参考:
http://www.cnblogs.com/zyzcj/p/6653549.html
http://www.cnblogs.com/liujiduo/p/5004691.html
以上是关于spring+mybatis 配置双数据源的主要内容,如果未能解决你的问题,请参考以下文章
MyBatis Spring SqlSessionFactoryBean 配置
MyBatis Spring MapperScannerConfigurer 配置
请教mybatis+spring+atomikos的整合问题