java -DsocksProxyHost=127.0.0.1 -DsocksProxyPort=10808 -jar forge-1.12.2-14.23.5.2854-installer.jar
java中支持 HTTP代理、HTTPS代理、Socket代理、FTP代理
HTTP
http.proxyHost
http.proxyPort [默认值:80]
http.nonProxyHosts
HTTPS
https.proxyHost
https.proxyPort [默认值:443]
https.nonProxyHosts
FTP
ftp.proxyHost
ftp.proxyPort [默认值:80]
ftp.nonProxyHosts
SOCKS
socksProxyHost
socksProxyPort [默认值:1080]