局部 {M2_HOME}/conf/settings.xml
全局 ~/.m2/settings.xml

<settings>
    <proxies>
        <proxy>
            <id>httpproxy</id>
            <active>true</active>
            <protocol>http</protocol>
            <host>your-proxy-host</host>
            <port>your-proxy-port</port>
            <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
        </proxy>
        <proxy>
            <id>httpsproxy</id>
            <active>true</active>
            <protocol>https</protocol>
            <host>your-proxy-host</host>
            <port>your-proxy-port</port>
            <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
        </proxy>
    </proxies>
</settings>