通过maven的标签，打包不同配置的变量包

　　<profiles>
        <profile>
            <!-- 本地开发环境 -->
            <id>dev</id>
            <properties>
                <profiles.active>dev</profiles.active>
            </properties>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
        </profile>
        <profile>
            <!-- 线上运行环境 -->
            <id>prod</id>
            <properties>
                <profiles.active>prod</profiles.active>
            </properties>
        </profile>
    </profiles>

　　　　<resources>
            <resource>
                <directory>src/main/resources</directory>
                <!-- 资源根目录排除各环境的配置，防止在生成目录中多余其它目录 -->
                <excludes>
                    <exclude>dev/*</exclude>
                    <exclude>prod/*</exclude>
                </excludes>
            </resource>
            <resource>
                <directory>src/main/resources/${profiles.active}</directory>
            </resource>
        </resources>