Android連接網絡的三種方法

HttpURLConnection的經常使用方法

// 獲取連接網絡的路徑

URL url = new URL(strUrl);

// 準備開啓網絡.設置訪問網絡的配置

HttpURLConnection httpURLConnection = (HttpURLConnection) url .openConnection(); httpURLConnection.setConnectTimeout(1000); httpURLConnection.setReadTimeout(1000);

httpURLConnection.connect();

// 獲取響應值 int lin = httpURLConnection.getResponseCode();

// 判斷返回值是否爲200

if (lin == 200) {

// 若是知足條件開始讀取信息

// 準備

InputStream inputStream = httpURLConnection.getInputStream();

byte[] bt = new byte[1024];

ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

// 開始讀取內容

int leng = -1;

while ((leng = inputStream.read(bt)) != -1) {

byteArrayOutputStream.write(bt, 0, leng);

}

// 關閉流 inputStream.close();

// 轉換成string字符串 String string = byteArrayOutputStream.toString();

HttpGet的聯網方式

//獲得httplient對象 HttpClient httpClient = new DefaultHttpClient();

//使用get方式訪問網絡並指定路徑 HttpGet httpGet = new HttpGet(url);

//執行聯網操做,發送get請求 HttpResponse httpResponse = httpClient.execute(httpGet);

//判斷是否爲狀態碼(200)

HttpStatus.SC_PK == httpResponse.toStatusLine().getStatusCode();

//在while循環正，將服務器返回的實體轉出字符串

EntityUtils.toString(entity, 「utf-8」);

POST請求的網絡連接方式

//建立httpClient對象

HttpClient client = new DefaultHttpClient();

//建立http post請求對象,並指定路徑 HttpPost post = new HttpPost(url);

// 將要提交的數據以name--value的形式傳遞

BasicNameValuePair pair = new BasicNameValuePair("name", name);

//把要提交的數據以實體的形式設置到post對象中

List parameters = new ArrayList();

UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters, "utf-8"); post.setEntity(entity);

//執行聯網操做,進行post請求

HttpResponse response = client.execute(post);

//獲取狀態行 StatusLine line = response.getStatusLine();

//獲取狀態碼(200)

int statusCode = line.getStatusCode();

//獲取實體對象，實體指的是服務器返回的數據

HttpEntity entity = response.getEntity();

//將服務器返回的實體轉出字符串 EntityUtils.toString(entity, "utf-8");

三種請求方式，註釋在代碼的上方