Android HttpClient GET或者POST请求基本使用方法

在Android开发中我们经常会用到网络连接功能与服务器进行数据的交互，为此Android的SDK提供了Apache的HttpClient来方便我们使用各种Http服务。你可以把HttpClient想象成一个浏览器，通过它的API我们可以很方便的发出GET，POST请求（它的功能远不止这些,这里只介绍如何使用HttpClient发起GET或者POST请求）

GET 方式 

 

//先将参数放入List，再对参数进行URL编码 

List params = new LinkedList(); 

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(); 

} 

 

POST方式 

 

 

//和GET方式一样，先将参数放入List 

params = new LinkedList(); 

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(); 

}