MyBatis-Plus 多库部署方式；spring mvc 多库部署方式

1、实现mybatis-plus的多个数据库的切换方式

源码地址：https://github.com/baomidou/mybatisplus-spring-mvc

2、因为其文档都是相互依赖的，所以修改配置，就是在已有的配置中修改

这里配置多数据源采用定义不同的profile方式修改启动时连接的数据库

原版

配置文件位置：https://github.com/baomidou/mybatisplus-spring-mvc/tree/master/src/main/resources/spring

 <?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: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/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">

     <!-- 引入属性文件 -->
     <context:property-placeholder location="classpath:config.properties"/>

     <!-- Service包(自动注入) -->
     <context:component-scan base-package="com.baomidou.springmvc.service"/>

     <import resource="classpath:spring/spring-mybatis.xml"/>
 </beans>

修改后配置

 <?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: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/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/util
        http://www.springframework.org/schema/util/spring-util.xsd" profile="development">

     <!-- 引入属性文件 -->
     <!--<context:property-placeholder location="classpath:applicationContext-profile.xml"/>-->
     <!--<context:property-placeholder location="classpath:config.properties"/>-->

     <beans profile="development">
         <context:property-placeholder
                 location="classpath*:common/*.properties,classpath*:development/*.properties"/>
         <!-- Service包(自动注入) -->
         <!-- 修改了package路径 -->
         <context:component-scan base-package="com.rent.springmvc.service"/>
         <!--导入mybatis-->
         <import resource="classpath:spring/spring-mybatis.xml"/>
     </beans>

     <!-- 测试环境配置文件 -->
     <beans profile="test">
         <context:property-placeholder
                 location="classpath*:common/*.properties,classpath*:test/*.properties"/>

         <!-- Service包(自动注入) -->
         <!-- 修改了package路径 -->
         <context:component-scan base-package="com.rent.springmvc.service"/>
         <!--导入mybatis-->
         <import resource="classpath:spring/spring-mybatis.xml"/>
     </beans>

     <!-- 生产环境配置文件 -->
     <beans profile="production">
         <context:property-placeholder
                 location="classpath*:common/*.properties,classpath*:production/*.properties"/>

         <!-- Service包(自动注入) -->
         <!-- 修改了package路径 -->
         <context:component-scan base-package="com.rent.springmvc.service"/>
         <!--导入mybatis-->
         <import resource="classpath:spring/spring-mybatis.xml"/>
     </beans>

 </beans>

项目路径截图

development中写修改的

 validationQuery=SELECT 1
 ###############本地数据库
 jdbc_url=jdbc\:mysql\://localhost\:3306/renttest?characterEncoding\=UTF-8
 ##jdbc_url=jdbc\:mysql\://192.168.31.255\:3306/test?characterEncoding\=UTF-8
 jdbc_username=root
 jdbc_password=123456

3、beans可以嵌套beans，这是核心配置

<beans profile="development">
    <context:property-placeholder
            location="classpath*:common/*.properties,classpath*:development/*.properties"/>
    <!-- Service包(自动注入) -->
    <!-- 修改了package路径 -->
    <context:component-scan base-package="com.rent.springmvc.service"/>
    <!--导入mybatis-->
    <import resource="classpath:spring/spring-mybatis.xml"/>

</beans>

import引入其他配置，这是一份拼接的配置文件