J2SE Proxy Authentication

Question

We use 2 SIMILAR Microsoft ISA Proxy Server 2003 to connect to internet. Each Proxy has different Login style, as below :

Server-1 : nt-domain\\alan Server-2 : alan@

Answer 1

Using apache-commons httpClient (version 3), I have the following code. It isn't tested well (if it is at all), but I think it worked once.. :) This is in case you can modify the programs.. if they are some 3rd party packages, nothing you can do.

String proxyHost = System.getProperty("https.proxyHost");
                int proxyPort = 0;
                try {
                    proxyPort = Integer.parseInt(System
                            .getProperty("https.proxyPort"));
                } catch (Exception ex) {
                    //
                }


            System.setProperty("java.net.useSystemProxies", "true");

            ProxySelector ps = ProxySelector.getDefault();
            List proxyList = ps.select(new URI(targetUrl));
            Proxy proxy = proxyList.get(0);
            if (proxy != null) {
                InetSocketAddress addr = ((InetSocketAddress) proxy
                        .address());
                if (addr != null) {
                    proxyHost = addr.getHostName();
                    proxyPort = addr.getPort();
                }
            }

            boolean useProxy = proxyHost != null && proxyHost.length() > 0;

            if (useProxy) {
                httpClient.getHostConfiguration().setProxy(proxyHost,
                        proxyPort);
            }