根据环境配置获取不同的配置文件

1.建立一个配置文件设置环境变量

 2.新建一个xml文件根据环境变量获取不同的配置文件

 代码：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
        "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <bean class="shelper.spring.ext.PropertyPlaceholderConfigurer">
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <property name="ignoreResourceNotFound" value="true" />
        <property name="rootLocation">
            <value>classpath:properties/env_pro.properties</value>
        </property>
        <property name="childLocations">
            <list>
                <value>classpath:/properties/${STG}/persion.properties</value>
                <value>classpath:/properties/${STG}/cmdc.properties</value>
            </list>
        </property>

    </bean>
</beans>

3.配置spring的主配置文件

 代码：

<?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"
       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">
    <context:component-scan base-package="net.bill99"></context:component-scan>

    <!--引入配置文件-->
    <import resource="classpath:context/envLoad.xml"></import>

    <!--引入bean文件-->
    <import resource="classpath:spring/*.xml"></import>
</beans>