使用maven profile指定配置文件打包适用多环境的方法

<profiles>
		<profile>
			<!-- 开发环境 -->
			<id>dev</id>
			<properties>
				<environment>development</environment><!-- 节点名字environment是自己随意取的 -->
			</properties>
			<activation>
				<activeByDefault>true</activeByDefault><!-- 默认激活该profile节点-->
			</activation>
		</profile>
		<profile>
			<!-- 测试环境 -->
			<id>test</id>
			<properties>
				<environment>test</environment>
			</properties>
		</profile>
		<profile>
			<!-- 预演环境 -->
			<id>prev</id>
			<properties>
				<environment>preview</environment>
			</properties>
		</profile>
		<profile>
			<!-- 生产环境 -->
			<id>prod</id>
			<properties>
				<environment>production</environment>
			</properties>
		</profile>
</profiles>

<build>			
		<resources>
			<resource>
				<directory>src/main/resources</directory>
				<excludes>
					<exclude>environment/development/*</exclude> 
					<exclude>environment/test/*</exclude> 
					<exclude>environment/preview/*</exclude> 
        	        <exclude>environment/production/**</exclude>
				</excludes>
			</resource>
			<resource>
				<directory>src/main/resources/environment/${environment}</directory>
				<targetPath>environment/${environment}</targetPath>
			</resource>
		</resources>
	</build>

<directory>src/main/resources</directory> <!--打包时包含src/main/resources目录下所有"子"文件 和 "孙"文件.如config 和environment -->
<exclude>environment/development/**</exclude> <!--打包时排除src/main/resources/environment/development下所有"子"文件 和 "孙"文件.-->
<exclude>environment/test/**</exclude> <!--打包时排除src/main/resources/environment/test下所有"子"文件 和 "孙"文件.-->
<exclude>environment/preview/**</exclude> <!--打包时排除src/main/resources/environment/preview下所有"子"文件 和 "孙"文件.-->
<exclude>environment/production/**</exclude><!--打包时排除src/main/resources/environment/production下所有"子"文件 和 "孙"文件.-->
<!-- 注意点: 如果写一个心号*, 如<exclude>environment/development/*</exclude> 则表示:打包时排除src/main/resources/environment/development下所有"子"文件, 不排除"孙"文件, 如上一个截图所示.-->
<!-- 以上配置优先度从上到下 递增, 这就达到目的: config目录下的配置各环境都需要, 而其它环境相关的配置只会有一个目录被打包--->

<directory>src/main/resources/environment/${environment}</directory> <!-- 打包时包含src/main/resources/environment/${environment}下所有"子"文件,environment变量值来自profile中赋值 -->
<targetPath>environment/${environment}</targetPath><!--指定src/main/resources/environment/${environment}所有"子文件" 打包 到包的哪个目录 -->