Bueno encontré la solución, había que setearle el proxy programaticamente:
Código:
import java.net.Authenticator;
import java.net.PasswordAuthentication;
public class ProxyAuthenticator extends Authenticator {
private String user, password;
public ProxyAuthenticator(String user, String password) {
this.user = user;
this.password = password;
}
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password.toCharArray());
}
}
Código:
Authenticator.setDefault(new ProxyAuthenticator("usuario", "pass"));
System.setProperty("http.proxyHost", PROXY_IP);
System.setProperty("http.proxyPort", PROXY_PORT);
Saludos!!