maven setting

maven setting 文件的设置需要注意切换到alibaba网站，国内可以访问快些

<profile>
            <id>nexus</id>
            <repositories>
                <repository>
                    <id>central</id>
                    <url>http://mvnrepo.alibaba-inc.com/mvn/repository</url>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <id>central</id>
                    <url>http://mvnrepo.alibaba-inc.com/mvn/repository</url>
                </pluginRepository>
            </pluginRepositories>
        </profile>

<pluginGroups>
        <pluginGroup>com.alibaba.org.apache.maven.plugins</pluginGroup>
        <pluginGroup>com.alibaba.maven.plugins</pluginGroup>
        <pluginGroup>com.alibaba.base.plugins</pluginGroup>
    </pluginGroups>