// Get方式請求 
public static void requestByGet() throws Exception { 
 String path = "http://www.dbjr.com.cn/logins.jsp?id=helloworld&pwd=android"; 
 // 新建一個URL對象 
 URL url = new URL(path); 
 // 打開一個HttpURLConnection連接 
 HttpURLConnection urlConn = (HttpURLConnection) url.openConnection(); 
 // 設(shè)置連接超時時間 
 urlConn.setConnectTimeout(5 * 1000); 
 // 開始連接 
 urlConn.connect(); 
 // 判斷請求是否成功 
 if (urlConn.getResponseCode() == HTTP_200) { 
  // 獲取返回的數(shù)據(jù) 
  byte[] data = readStream(urlConn.getInputStream()); 
  Log.i(TAG_GET, "Get方式請求成功，返回?cái)?shù)據(jù)如下："); 
  Log.i(TAG_GET, new String(data, "UTF-8")); 
 } else { 
  Log.i(TAG_GET, "Get方式請求失敗"); 
 } 
 // 關(guān)閉連接 
 urlConn.disconnect(); 
} 

// Post方式請求 
public static void requestByPost() throws Throwable { 
 String path = "http://www.dbjr.com.cn/logins.jsp"; 
 // 請求的參數(shù)轉(zhuǎn)換為byte數(shù)組 
 String params = "id=" + URLEncoder.encode("helloworld", "UTF-8") 
   + "&pwd=" + URLEncoder.encode("android", "UTF-8"); 
 byte[] postData = params.getBytes(); 
 // 新建一個URL對象 
 URL url = new URL(path); 
 // 打開一個HttpURLConnection連接 
 HttpURLConnection urlConn = (HttpURLConnection) url.openConnection(); 
 // 設(shè)置連接超時時間 
 urlConn.setConnectTimeout(5 * 1000); 
 // Post請求必須設(shè)置允許輸出 
 urlConn.setDoOutput(true); 
 // Post請求不能使用緩存 
 urlConn.setUseCaches(false); 
 // 設(shè)置為Post請求 
 urlConn.setRequestMethod("POST"); 
 urlConn.setInstanceFollowRedirects(true); 
 // 配置請求Content-Type 
 urlConn.setRequestProperty("Content-Type", 
   "application/x-www-form-urlencode"); 
 // 開始連接 
 urlConn.connect(); 
 // 發(fā)送請求參數(shù) 
 DataOutputStream dos = new DataOutputStream(urlConn.getOutputStream()); 
 dos.write(postData); 
 dos.flush(); 
 dos.close(); 
 // 判斷請求是否成功 
 if (urlConn.getResponseCode() == HTTP_200) { 
  // 獲取返回的數(shù)據(jù) 
  byte[] data = readStream(urlConn.getInputStream()); 
  Log.i(TAG_POST, "Post請求方式成功，返回?cái)?shù)據(jù)如下："); 
  Log.i(TAG_POST, new String(data, "UTF-8")); 
 } else { 
  Log.i(TAG_POST, "Post方式請求失敗"); 
 } 
} 
 

// HttpGet方式請求 
public static void requestByHttpGet() throws Exception { 
 String path = "http://www.dbjr.com.cn/logins.jsp?id=helloworld&pwd=android"; 
 // 新建HttpGet對象 
 HttpGet httpGet = new HttpGet(path); 
 // 獲取HttpClient對象 
 HttpClient httpClient = new DefaultHttpClient(); 
 // 獲取HttpResponse實(shí)例 
 HttpResponse httpResp = httpClient.execute(httpGet); 
 // 判斷是夠請求成功 
 if (httpResp.getStatusLine().getStatusCode() == HTTP_200) { 
  // 獲取返回的數(shù)據(jù) 
  String result = EntityUtils.toString(httpResp.getEntity(), "UTF-8"); 
  Log.i(TAG_HTTPGET, "HttpGet方式請求成功，返回?cái)?shù)據(jù)如下："); 
  Log.i(TAG_HTTPGET, result); 
 } else { 
  Log.i(TAG_HTTPGET, "HttpGet方式請求失敗"); 
 } 
} 

// HttpPost方式請求 
public static void requestByHttpPost() throws Exception { 
 String path = "http://www.dbjr.com.cn/"; 
 // 新建HttpPost對象 
 HttpPost httpPost = new HttpPost(path); 
 // Post參數(shù) 
 List<NameValuePair> params = new ArrayList<NameValuePair>(); 
 params.add(new BasicNameValuePair("id", "helloworld")); 
 params.add(new BasicNameValuePair("pwd", "android")); 
 // 設(shè)置字符集 
 HttpEntity entity = new UrlEncodedFormEntity(params, HTTP.UTF_8); 
 // 設(shè)置參數(shù)實(shí)體 
 httpPost.setEntity(entity); 
 // 獲取HttpClient對象 
 HttpClient httpClient = new DefaultHttpClient(); 
 // 獲取HttpResponse實(shí)例 
 HttpResponse httpResp = httpClient.execute(httpPost); 
 // 判斷是夠請求成功 
 if (httpResp.getStatusLine().getStatusCode() == HTTP_200) { 
  // 獲取返回的數(shù)據(jù) 
  String result = EntityUtils.toString(httpResp.getEntity(), "UTF-8"); 
  Log.i(TAG_HTTPGET, "HttpPost方式請求成功，返回?cái)?shù)據(jù)如下："); 
  Log.i(TAG_HTTPGET, result); 
 } else { 
  Log.i(TAG_HTTPGET, "HttpPost方式請求失敗"); 
 } 
}