Android 设置代理（验证用户名和密码）

这几天在研究在Android中，解析网页，但是公司内容，链接外网需要代理，并需要验证用户名和密码，十分头疼，网上查了下，没有头绪，最后总算在一个外国博客中看到类似的，记录下

URL url = new URL(urlString);

String host=android.net.Proxy.getDefaultHost();

int port=android.net.Proxy.getDefaultPort();

SocketAddress address=null;

try {

address=new InetSocketAddress(host, port);

} catch (Exception e) {     System.out.println(e.getMessage());    }

Proxy proxy=new java.net.Proxy(java.net.Proxy.Type.HTTP, address);

String credentials = "用户名:密码";

byte[] toencode = null;

try {

toencode = credentials.getBytes("UTF-8");

} catch (UnsupportedEncodingException e1) {        e1.printStackTrace();    }

HttpURLConnection  ucon=null;

try {

ucon =(HttpURLConnection)url.openConnection(proxy);

ucon.setConnectTimeout(50000) ;

ucon.setRequestProperty("Proxy-Authorization", "Basic " + Base64.encodeToString(toencode, Base64.DEFAULT));

//ucon.connect();

} catch (Exception e) {     e.printStackTrace();    }

//ucon.connect();

int responseCode = ucon.getResponseCode();

InputStream instr=null;

if(responseCode == HttpURLConnection.HTTP_OK){

instr = ucon.getInputStream();

}

BufferedInputStream bis = new BufferedInputStream(instr);

ByteArrayBuffer baf = new ByteArrayBuffer(1024);

int current = 0;

while ((current = bis.read()) != -1) {

//baf..append(new String(baf,0,current,"UTF-8"));

baf.append((byte) current);

}

instr.close();

bis.close();

ucon.disconnect();

return EncodingUtils.getString(baf.toByteArray(), "gb2312");