java 程序代理设置

URL url;System.setProperty("http.proxyHost", "192.168.1.1");System.setProperty("http.proxyPort", "3128");Authenticator.setDefault(new ProxyAuthenticator("name", "password"));try {url = new URL("http://download.oracle.com/javase/6/docs/technotes/guides/net/proxies.html");InputStream in = url.openStream();int i  = -1;while((i=in.read())>-1){System.out.print((char)i);}in.close();} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}

参考资料：http://download.oracle.com/javase/6/docs/technotes/guides/net/proxies.html