Spring MVC配置双数据源实现一个java项目同时连接两个数据库的方法

Spring MVC配置双数据源实现一个java项目同时连接两个数据库的方法

前言

本文主要介绍的是关于Spring MVC配置双数据源实现一个java项目同时连接两个数据库的方法，分享出来供大家参考学习，下面来看看详细的介绍：

实现方法：

数据源在配置文件中的配置

xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:aop="http://springframework.org/schema/aop"

xmlns:cache="http://springframework.org/schema/cache"

xmlns:context="http://springframework.org/schema/context"

xmlns:jdbc="http://springframework.org/schema/jdbc" xmlns:jee="http://springframework.org/schema/jee"

xmlns:jms="http://springframework.org/schema/jms" xmlns:lang="http://springframework.org/schema/lang"

xmlns:mvc="http://springframework.org/schema/mvc" xmlns:oxm="http://springframework.org/schema/oxm"

xmlns:p="http://springframework.org/schema/p" xmlns:task="http://springframework.org/schema/task"

xmlns:tx="http://springframework.org/schema/tx" xmlns:util="http://springframework.org/schema/util"

xsi:schemaLocation="http://springframework.org/schema/beans http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/aop http://springframework.org/schema/aop/spring-aop-3.1.xsd

http://springframework.org/schema/cache http://springframework.org/schema/cache/spring-cache-3.1.xsd

http://springframework.org/schema/context http://springframework.org/schema/context/spring-context-3.1.xsd

http://springframework.org/schema/jdbc http://springframework.org/schema/jdbc/spring-jdbc-3.1.xsd

http://springframework.org/schema/jee http://springframework.org/schema/jee/spring-jee-3.1.xsd

http://springframework.org/schema/jms http://springframework.org/schema/jms/spring-jms-3.1.xsd

http://springframework.org/schema/lang http://springframework.org/schema/lang/spring-lang-3.1.xsd

http://springframework.org/schema/mvc http://springframework.org/schema/mvc/spring-mvc-3.1.xsd

http://springframework.org/schema/oxm http://springframework.org/schema/oxm/spring-oxm-3.1.xsd

http://springframework.org/schema/task http://springframework.org/schema/task/spring-task-3.1.xsd

http://springframework.org/schema/tx http://springframework.org/schema/tx/spring-tx-3.1.xsd

http://springframework.org/schema/util http://springframework.org/schema/util/spring-util-3.1.xsd">

classpath:com/resource/config.properties

destroy-method="close">

destroy-method="close">

org.hibernate.dialect.mysqlDialect

org.springframework.orm.hibernate4.SpringSessionContext

false

true

create

com.po

xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:aop="http://springframework.org/schema/aop"

xmlns:cache="http://springframework.org/schema/cache"

xmlns:context="http://springframework.org/schema/context"

xmlns:jdbc="http://springframework.org/schema/jdbc" xmlns:jee="http://springframework.org/schema/jee"

xmlns:jms="http://springframework.org/schema/jms" xmlns:lang="http://springframework.org/schema/lang"

xmlns:mvc="http://springframework.org/schema/mvc" xmlns:oxm="http://springframework.org/schema/oxm"

xmlns:p="http://springframework.org/schema/p" xmlns:task="http://springframework.org/schema/task"

xmlns:tx="http://springframework.org/schema/tx" xmlns:util="http://springframework.org/schema/util"

xsi:schemaLocation="http://springframework.org/schema/beans http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/aop http://springframework.org/schema/aop/spring-aop-3.1.xsd

http://springframework.org/schema/cache http://springframework.org/schema/cache/spring-cache-3.1.xsd

http://springframework.org/schema/context http://springframework.org/schema/context/spring-context-3.1.xsd

http://springframework.org/schema/jdbc http://springframework.org/schema/jdbc/spring-jdbc-3.1.xsd

http://springframework.org/schema/jee http://springframework.org/schema/jee/spring-jee-3.1.xsd

http://springframework.org/schema/jms http://springframework.org/schema/jms/spring-jms-3.1.xsd

http://springframework.org/schema/lang http://springframework.org/schema/lang/spring-lang-3.1.xsd

http://springframework.org/schema/mvc http://springframework.org/schema/mvc/spring-mvc-3.1.xsd

http://springframework.org/schema/oxm http://springframework.org/schema/oxm/spring-oxm-3.1.xsd

http://springframework.org/schema/task http://springframework.org/schema/task/spring-task-3.1.xsd

http://springframework.org/schema/tx http://springframework.org/schema/tx/spring-tx-3.1.xsd

http://springframework.org/schema/util http://springframework.org/schema/util/spring-util-3.1.xsd">

classpath:com/resource/config.properties

destroy-method="close">

destroy-method="close">

destroy-method="close">

destroy-method="close">

org.hibernate.dialect.mysqlDialect

org.springframework.orm.hibernate4.SpringSessionContext

false

true

create

com.po

DynamicDataSource.class

package com.core;

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

public class DynamicDataSource extends AbstractRoutingDataSource{

@Override

protected Object determineCurrentLookupKey() {

return DatabaseContextHolder.getCustomerType();

}

}

DatabaseContextHolder.class设置数据源的类

package com.core;

public class DatabaseContextHolder {

private static final ThreadLocal contextHolder = new ThreadLocal();

//设置要使用的数据源

public static void setCustomerType(String customerType) {

contextHolder.set(customerType);

}

//获取数据源

public static String getCustomerType() {

return contextHolder.get();

}

//清除数据源，使用默认的数据源

public static void clearCustomerType() {

contextHolder.remove();

}

}

DataSourceInterceptor.class

package com.core;

import org.aspectj.lang.JoinPoint;

import org.springframework.stereotype.Component;

@Component

public class DataSourceInterceptor {

//数据源1

public static final String SOURCE_PLAN = "dataSourceOne";

//数据源2

}

springMVC数据源

jdbc_driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver

jdbc_username=**jdbc_password=**

dataSourceTwo=jdbc:sqlserver://115.29.***.*;DatabaseName=DB_Fund

Spring MVC会默认有一个数据源，当需要更换数据源时，要在调用事务之前配置

DataSourceContextHolder.setDbType(DataSourceType.SOURCE_FUND);//更换数据源

/**

* @ClassName: DataSourceContextHolder

* @Description: 数据库切换工具类

* @author: wzx

* @date: 2016-07-27 上午10:26:01

*/

public class DataSourceContextHolder {

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();

}

}

总结

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