Shulou(Shulou.com)06/02 Report--

How does Android access the CVM address? I believe that many inexperienced people are at a loss about this, so this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Use an Android program to connect to the CVM, using the same principle of httpClient or okhttp. Initiate a http request to transfer data and parse the result. Here, according to the introduction of Baidu know netizens, give an example of the usage of httpClient:

1. Pass parameters in GET mode

/ / put the parameters into List first, and then encode the parameters with URL

List params = new LinkedList (); params.add (new BasicNameValuePair ("param1", "data")); / / add parameter 1params.add (new BasicNameValuePair ("param2", "value2")); / / add parameter 2String param = URLEncodedUtils.format (params, "UTF-8"); / / encode a pair of parameters String baseUrl = "server interface complete URL"; HttpGet getMethod = new HttpGet (baseUrl + "?" + param); / / concatenate URL with parameters HttpClient httpClient = new DefaultHttpClient () Try {HttpResponse response = httpClient.execute (getMethod); / / initiate GET request Log.i (TAG, "resCode =" + response.getStatusLine (). GetStatusCode ()); / / get response code Log.i (TAG, "result =" + EntityUtils.toString (response.getEntity (), "utf-8")); / / get server response content} catch (ClientProtocolException e) {e.printStackTrace ();} catch (IOException e) {e.printStackTrace ();}

2. Transfer parameters in POST mode

/ / just like GET, put the parameters into List first

Params = new LinkedList (); params.add (new BasicNameValuePair ("param1", "Post method")); / / add parameter 1params.add (new BasicNameValuePair ("param2", "second parameter")); / / add parameter 2try {HttpPost postMethod = new HttpPost (baseUrl); / / create a post request postMethod.setEntity (new UrlEncodedFormEntity (params, "utf-8")); / / add the parameter to POST Entity HttpResponse response = httpClient.execute (postMethod) / execute the POST method Log.i (TAG, "resCode =" + response.getStatusLine (). GetStatusCode ()); / get the response code Log.i (TAG, "result =" + EntityUtils.toString (response.getEntity (), "utf-8")); / / get the response content} catch (UnsupportedEncodingException e) {e.printStackTrace ();} catch (ClientProtocolException e) {e.printStackTrace ();} catch (IOException e) {e.printStackTrace () } after reading the above, have you mastered how Android accesses the address of the CVM? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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