阿里云镜像源

<repositories>
        <repository>
            <id>maven.aliyun.com</id>
            <url>https://maven.aliyun.com/repository/central</url>
        </repository>
        <repository>
            <id>maven.aliyun.com-jcenter</id>
            <url>https://maven.aliyun.com/repository/jcenter</url>
        </repository>

        <repository>
            <id>sonatype-releases</id>
            <url>http://oss.sonatype.org/content/repositories/releases/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
            </releases>
        </repository>
        <repository>
            <id>sonatype-snapshots</id>
            <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
            <releases>
                <enabled>false</enabled>
            </releases>
        </repository>
        <repository>
            <id>shibboleth-releases</id>
            <url>https://build.shibboleth.net/nexus/content/repositories/releases</url>
        </repository>
    </repositories>