//当我们使用的是中国移动的手机网络时，下面方法可以直接获取得到10.0.0.172，80端口

 String host=android.net.Proxy.getDefaultHost();//通过andorid.net.Proxy可以获取默认的代理地址

 int port =android.net.Proxy.getDefaultPort();//通过andorid.net.Proxy可以获取默认的代理端口

 SocketAddress sa=new InetSocketAddress(host,port);

 //定义代理，此处的Proxy是源自java.net

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

 URL getUrl = new URL(“www.baidu.com”);

 HttpURLConnection con = (HttpURLConnection) getUrl.openConnection(proxy);//设置代理 

 DefaultHttpClient httpClient=new DefaultHttpClient();

 String host=Proxy.getDefaultHost();//此处Proxy源自android.net

 int port = Proxy.getPort(context);//同上

 HttpHost httpHost = new HttpHost(host, port);

 //设置代理

 httpClient.getParams().setParameter(ConnRouteParams.DEFAULT_PROXY,httpHost);

 HttpGet httpGet=new HttpPost("<a href="http://www.baidu.com">www.baidu.com</a>");

 HttpResponse response=httpClient.execute(httpGet);  

 public static InputStream getHttpURLConnectionInputStream(Context context,String requestUrl,Map<String, String> param) {  

        URL url;

        HttpURLConnection conn = null;

        InputStream input = null;

        try {

            url = new URL(requestUrl);

            if(getAPNType(context)==NetWorkUtil.CMWAP)   //当请求的网络为wap的时候，就需要添加中国移动代理

            {

                Proxy proxy = new Proxy(java.net.Proxy.Type.HTTP,new InetSocketAddress("10.0.0.172", 80));

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

            }else{

                  conn = url.openConnection();

              }

                conn.setConnectTimeout(10000);    //请求超时

                conn.setRequestMethod("POST");  //请求方式

                conn.setReadTimeout(1000);   //读取超时

                conn.setDoOutput(true);

                conn.setDoInput(true);

                conn.setUseCaches(false);

                conn.setRequestProperty("Charset", "UTF-8");

                conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

                OutputStream os = conn.getOutputStream();

                StringBuilder sb = new StringBuilder();

                Iterator<String> it = param.keySet().iterator();

                while (it.hasNext()) {

                    String key = it.next();

                    String value = param.get(key);

                    sb.append(key).append("=").append(value).append("&");

                }

                String p = sb.toString().substring(0, sb.length()-1);

                System.out.println("请求的参数"+p);

                os.write(p.getBytes("utf-8"));

                os.close();

                if(conn!=null)

                {

                    input = conn.getInputStream();

                }  

        } catch (Exception e) {

            e.printStackTrace();

        }

        return input;

    }  

public static InputStream getHttpClientInputStream(Context context,String requestUrl, Map<String, String> param)throws Exception {

    HttpClient client = new DefaultHttpClient();

    if(getAPNType(context)==NetWorkUtil.CMWAP)  //当请求的网络为wap的时候，就需要添加中国移动代理

    {

        HttpHost proxy = new HttpHost("10.0.0.172", 80);

        client.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,

                proxy);

    }

    HttpPost hp = new HttpPost(requestUrl);

    hp.setHeader("Charset", "UTF-8");

    hp.setHeader("Content-Type", "application/x-www-form-urlencoded");

    List<BasicNameValuePair> list = new ArrayList<BasicNameValuePair>();  

    Iterator<String> it = param.keySet().iterator();

    while (it.hasNext()) {

        String key = it.next();

        list.add(new BasicNameValuePair(key, param.get(key)));

    }

    hp.setEntity(new UrlEncodedFormEntity(list,"UTF-8"));

    HttpResponse response = null;

    response = client.execute(hp);

    return response.getEntity().getContent();

}