Android连接网络的三种方法

HttpURLConnection的经常使用方法

// 获取连接网络的路径

URL url = new URL(strUrl);

// 准备开启网络.设置访问网络的配置

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

httpURLConnection.connect();

// 获取响应值 int lin = httpURLConnection.getResponseCode();

// 判断返回值是否为200

if (lin == 200) {

// 若是知足条件开始读取信息

// 准备

InputStream inputStream = httpURLConnection.getInputStream();

byte[] bt = new byte[1024];

ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

// 开始读取内容

int leng = -1;

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

byteArrayOutputStream.write(bt, 0, leng);

}

// 关闭流 inputStream.close();

// 转换成string字符串 String string = byteArrayOutputStream.toString();

HttpGet的联网方式

//获得httplient对象 HttpClient httpClient = new DefaultHttpClient();

//使用get方式访问网络并指定路径 HttpGet httpGet = new HttpGet(url);

//执行联网操做,发送get请求 HttpResponse httpResponse = httpClient.execute(httpGet);

//判断是否为状态码(200)

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

//在while循环正，将服务器返回的实体转出字符串

EntityUtils.toString(entity, “utf-8”);

POST请求的网络连接方式

//建立httpClient对象

HttpClient client = new DefaultHttpClient();

//建立http post请求对象,并指定路径 HttpPost post = new HttpPost(url);

// 将要提交的数据以name--value的形式传递

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

//把要提交的数据以实体的形式设置到post对象中

List parameters = new ArrayList();

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

//执行联网操做,进行post请求

HttpResponse response = client.execute(post);

//获取状态行 StatusLine line = response.getStatusLine();

//获取状态码(200)

int statusCode = line.getStatusCode();

//获取实体对象，实体指的是服务器返回的数据

HttpEntity entity = response.getEntity();

//将服务器返回的实体转出字符串 EntityUtils.toString(entity, "utf-8");

三种请求方式，注释在代码的上方