settings.xml

<mirror>
    <id>ali</id>
    <mirrorOf>*</mirrorOf>
    <name>aliyun maven</name>
    <url>https://maven.aliyun.com/repository/public</url>
</mirror>
<mirror>
    <id>ibiblio</id>
    <mirrorOf>central</mirrorOf>
    <name>ibiblio Mirror of http://repo1.maven.org/maven2/</name>
    <url>http://mirrors.ibiblio.org/pub/mirrors/maven2</url>
</mirror>
<mirror>
    <id>repo2</id>
    <mirrorOf>central</mirrorOf>
    <name>Human Readable Name for this Mirror.</name>
    <url>http://repo2.maven.org/maven2/</url>
</mirror>
<mirror>
    <id>repo1</id>
    <mirrorOf>central</mirrorOf>
    <name>Human Readable Name for this Mirror.</name>
    <url>http://repo1.maven.org/maven2/</url>
</mirror>