SpringMVC配置雙數(shù)據(jù)源，一個(gè)java項(xiàng)目同時(shí)連接兩個(gè)數(shù)據(jù)庫(kù)
來源：白開水挺好喝 發(fā)布時(shí)間：2018-11-14 11:31:26 閱讀量：1034
[java] view plain copy
<pre name=“code” class=“java”><?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:aop=“http://www.springframework.org/schema/aop”
xmlns:cache=”http://www.springframework.org/schema/cache”
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:jms=”http://www.springframework.org/schema/jms” xmlns:lang=“http://www.springframework.org/schema/lang”
xmlns:mvc=”http://www.springframework.org/schema/mvc” xmlns:oxm=“http://www.springframework.org/schema/oxm”
xmlns:p=”http://www.springframework.org/schema/p” xmlns:task=“http://www.springframework.org/schema/task”
xmlns:tx=”http://www.springframework.org/schema/tx” xmlns:util=“http://www.springframework.org/schema/util”
xsi:schemaLocation=”http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-3.1.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-3.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd”>
<context:annotation-config />
<context:component-scan base-package=“com”></context:component-scan>
<bean class=“org.springframework.beans.factory.config.PropertyPlaceholderConfigurer”>
<property name=”locations”>
<list>
<value>classpath:com/resource/config.properties</value>
</list>
</property>
</bean>
<bean id=”dataSourceOne” class=“com.mchange.v2.c3p0.ComboPooledDataSource”
destroy-method=”close”>
<property name=”driverClass” value=“${dbOne.jdbc.driverClass}” />
<property name=”jdbcUrl” value=“${dbOne.jdbc.url}” />
<property name=”user” value=“${dbOne.jdbc.user}” />
<property name=”password” value=“${dbOne.jdbc.password}” />
<property name=”initialPoolSize” value=“${dbOne.jdbc.initialPoolSize}” />
<property name=”minPoolSize” value=“${dbOne.jdbc.minPoolSize}” />
<property name=”maxPoolSize” value=“${dbOne.jdbc.maxPoolSize}” />
</bean>
<bean id=”dataSourceTwo” class=“com.mchange.v2.c3p0.ComboPooledDataSource”
destroy-method=”close”>
<property name=”driverClass” value=“${dbTwo.jdbc.driverClass}” />
<property name=”jdbcUrl” value=“${dbTwo.jdbc.url}” />
<property name=”user” value=“${dbTwo.jdbc.user}” />
<property name=”password” value=“${dbTwo.jdbc.password}” />
<property name=”initialPoolSize” value=“${dbTwo.jdbc.initialPoolSize}” />
<property name=”minPoolSize” value=“${dbTwo.jdbc.minPoolSize}” />
<property name=”maxPoolSize” value=“${dbTwo.jdbc.maxPoolSize}” />
</bean>
<bean id=”dynamicDataSource” class=“com.core.DynamicDataSource”>
<property name=”targetDataSources”>
<map key-type=”java.lang.String”>
<entry value-ref=”dataSourceOne” key=“dataSourceOne”></entry>
<entry value-ref=”dataSourceTwo” key=“dataSourceTwo”></entry>
</map>
</property>
<property name=”defaultTargetDataSource” ref=“dataSourceOne”>
</property>
</bean>
<bean id=”sessionFactory” class=“org.springframework.orm.hibernate4.LocalSessionFactoryBean”>
<property name=”dataSource” ref=“dynamicDataSource” />
<property name=”hibernateProperties”>
<props>
<prop key=”hibernate.dialect”>org.hibernate.dialect.MySQLDialect</prop>
<prop key=”hibernate.current_session_context_class”>org.springframework.orm.hibernate4.SpringSessionContext</prop>
<prop key=”hibernate.show_sql”>false</prop>
<prop key=”hibernate.format_sql”>true</prop>
<prop key=”hbm2ddl.auto”>create</prop>
</props>
</property>
<property name=”packagesToScan”>
<list>
<value>com.po</value>
</list>
</property>
</bean>
<bean id=”transactionManager” class=“org.springframework.orm.hibernate4.HibernateTransactionManager”>
<property name=”sessionFactory” ref=“sessionFactory” />
</bean>
<aop:config>
<aop:pointcut id=”transactionPointCut” expression=“execution(* com.dao..*.*(..))” />
<aop:advisor advice-ref=”txAdvice” pointcut-ref=“transactionPointCut” />
</aop:config>
<tx:advice id=”txAdvice” transaction-manager=“transactionManager”>
<tx:attributes>
<tx:method name=”add*” propagation=“REQUIRED” />
<tx:method name=”save*” propagation=“REQUIRED” />
<tx:method name=”update*” propagation=“REQUIRED” />
<tx:method name=”delete*” propagation=“REQUIRED” />
<tx:method name=”*” read-only=“true” />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:aspect id=”dataSourceAspect” ref=“dataSourceInterceptor”>
<aop:pointcut id=”daoOne” expression=“execution(* com.dao.one.*.*(..))” />
<aop:pointcut id=”daoTwo” expression=“execution(* com.dao.two.*.*(..))” />
<aop:before pointcut-ref=”daoOne” method=“setdataSourceOne” />
<aop:before pointcut-ref=”daoTwo” method=“setdataSourceTwo” />
</aop:aspect>
</aop:config>
</beans>
DynamicDataSource.class
[java] view plain copy
package com.core;
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
public class DynamicDataSource extends AbstractRoutingDataSource{
@Override
protected Object determineCurrentLookupKey() {
return DatabaseContextHolder.getCustomerType();
}
}
DatabaseContextHolder.class設(shè)置數(shù)據(jù)源的類
[java] view plain copy
package com.core;
public class DatabaseContextHolder {
private static final ThreadLocal<String> contextHolder = new ThreadLocal<String>();
<span style=”white-space:pre”> </span>//設(shè)置要使用的數(shù)據(jù)源
public static void setCustomerType(String customerType) {
contextHolder.set(customerType);
}
<span style=”white-space:pre”> </span>//獲取數(shù)據(jù)源
public static String getCustomerType() {
return contextHolder.get();
}
<span style=”white-space:pre”> </span>//清除數(shù)據(jù)源，使用默認(rèn)的數(shù)據(jù)源
public static void clearCustomerType() {
contextHolder.remove();
}
}
DataSourceInterceptor.class
[java] view plain copy
package com.core;
import org.aspectj.lang.JoinPoint;
import org.springframework.stereotype.Component;
@Component
public class DataSourceInterceptor {
<span style=”white-space:pre”> </span>//數(shù)據(jù)源1
public static final String SOURCE_PLAN = “<span style=”font-family: Arial, Helvetica, sans-serif;“>dataSourceOne</span><span style=”font-family: Arial, Helvetica, sans-serif;“>”;</span>
//數(shù)據(jù)源2
<pre name=”code” class=“java”><span style=“white-space:pre”> </span>public static final String SOURCE_FUND = “<span style=”font-family: Arial, Helvetica, sans-serif;“>dataSourceTwo</span>”;
}
springMVC數(shù)據(jù)源
[html] view plain copy
jdbc_driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
<pre name=“code” class=“java”>dataSourceOne<span style=“font-family: Arial, Helvetica, sans-serif;”>=jdbc:sqlserver://115.29.***.**;DatabaseName=DB_GuiHua</span>
jdbc_username=jdbc_password=[java] view plain copy
dataSourceTwo<span style=“font-family: Arial, Helvetica, sans-serif;”>=jdbc:sqlserver://115.29.***.*;DatabaseName=DB_Fund</span>
Spring MVC會(huì)默認(rèn)有一個(gè)數(shù)據(jù)源，當(dāng)需要更換數(shù)據(jù)源時(shí)，要在調(diào)用事務(wù)之前配置
[java] view plain copy
DataSourceContextHolder.setDbType(DataSourceType.SOURCE_FUND);//更換數(shù)據(jù)源
[java] view plain copy
/**
* @ClassName: DataSourceContextHolder
* @Description: 數(shù)據(jù)庫(kù)切換工具類
* @author: wzx
* @date: 2016-07-27 上午10:26:01
*/
public class DataSourceContextHolder {
private static final ThreadLocal<String> contextHolder = new ThreadLocal<String>();
public static void setDbType(String dbType) {
contextHolder.set(dbType);
}
public static String getDbType() {
return ((String) contextHolder.get());
}
public static void clearDbType() {
contextHolder.remove();
}
}
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