AndroidHttpClient c = AndroidHttpClient.newInstance(""); 
BasicHttpContext context = new BasicHttpContext(); 
context.setAttribute(ClientContext.COOKIE_STORE, new BasicCookieStore()); 
try { 
c.execute(null, context); 
} catch (IOException e) { 
// TODO Auto-generated catch block 
e.printStackTrace(); 
}

try {
 final String _URI = "www.baidu.com";
 HttpGet requestGet = new HttpGet();
 requestGet.setURI(new URI(_URI));
    } catch (URISyntaxException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
    }

try {
      final String _URI = "www.baidu.com";
      HttpGet requestGet = new HttpGet(new URI(_URI));
    } catch (URISyntaxException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }

//先将参数放入List，再对参数进行URL编码 
 List<BasicNameValuePair> params = new LinkedList<BasicNameValuePair>(); 
 params.add(new BasicNameValuePair("param1", "中国")); 
 params.add(new BasicNameValuePair("param2", "value2")); 
 //对参数编码 
 String param = URLEncodedUtils.format(params, "UTF-8"); 
 //baseUrl      
 String baseUrl = "http://ubs.free4lab.com/php/method.php"; 
 //将URL与参数拼接 
 HttpGet getMethod = new HttpGet(baseUrl + "?" + param); 
 HttpClient httpClient = new DefaultHttpClient(); 
 try { 
  HttpResponse response = httpClient.execute(getMethod); //发起GET请求 
  Log.i(TAG, "resCode = " + response.getStatusLine().getStatusCode()); //获取响应码 
  Log.i(TAG, "result = " + EntityUtils.toString(response.getEntity(), "utf-8"));//获取服务器响应内容 
 } catch (ClientProtocolException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } catch (IOException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 }

 //和GET方式一样，先将参数放入List 
 params = new LinkedList<BasicNameValuePair>(); 
 params.add(new BasicNameValuePair("param1", "Post方法")); 
 params.add(new BasicNameValuePair("param2", "第二个参数")); 
 try { 
  HttpPost postMethod = new HttpPost(baseUrl); 
  postMethod.setEntity(new UrlEncodedFormEntity(params, "utf-8")); //将参数填入POST Entity中 
  HttpResponse response = httpClient.execute(postMethod); //执行POST方法 
  Log.i(TAG, "resCode = " + response.getStatusLine().getStatusCode()); //获取响应码 
  Log.i(TAG, "result = " + EntityUtils.toString(response.getEntity(), "utf-8")); //获取响应内容 
 } catch (UnsupportedEncodingException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } catch (ClientProtocolException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 } catch (IOException e) { 
  // TODO Auto-generated catch block 
  e.printStackTrace(); 
 }