HttpClient

Android 6.0 release removes support for HttpClient client

Google recommends using HttpURLConnection. This API is more efficient, reducing network usage and reducing power consumption through transparent compression and response caching

To be added notes

To inherit from using HttpClient you need to declare it in build.gradle:

android {
  ...
  //Declaration
  useLibrary 'org.apache.http.legacy'
  ...
}

Add dependencies:

dependencies {
     / / Depend on HttpClient
  implementation 'org.apache.httpcomponents:httpclient-android:4.3.5.1'
}

Basic use:

1. POST

/ / Create HttpClient
1HttpClient client = HttpClients.createDefault();

 / / Create a post request
HttpPost post = new HttpPost(url);

 // build request parameters
List<NameValuePair> params = new ArrayList<>();
params.add(new BasicNameValuePair("tel", phoneNum));

 / / Set the post request body
post.setEntity(new UrlEncodedFormEntity(params));

 //Execute the request
HttpResponse response = client.execute(post);

 / / Get results
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
  String result = EntityUtils.toString(response.getEntity());
     / / Process the request result
}

2. GET

//1 Create HttpClient
HttpClient client = HttpClients.createDefault();

 / / Create a get request: parameters spliced ​​in the url
HttpGet get = new HttpGet(url + "?tel=" + phoneNum);

 //Execute the request
HttpResponse response = client.execute(get);

 / / Get results
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
  String result = EntityUtils.toString(response.getEntity());
  mHandler.sendMessage(mHandler.obtainMessage(UPDATE_UI, result));
}

3. RequestBuild build request object

/ / Request configuration: connection timed out
RequestConfig requestConfig = RequestConfig
  .custom()
  .setConnectTimeout(5000)
  .build();
  
 / / Create httpclient
//HttpClient client = HttpClients.createDefault();
CloseableHttpClient client = HttpClients
  .custom()
  .setDefaultRequestConfig(requestConfig)
  .build();

 / / Build request object
HttpUriRequest request = RequestBuilder
     / / Request method
  .get()
  //.post()
     / / Request url
  .setUri(url)
     / / Request parameters
  .addParameter("tel", phoneNum)
  .build();

 / / Execute a request
HttpResponse response = client.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
  String result = EntityUtils.toString(response.getEntity());
  mHandler.sendMessage(mHandler.obtainMessage(UPDATE_UI, result));
}