Apache HttpClient - CodeBucket

Apache HttpClient
The Apache HttpClient library allows us to make HTTP requests.

Add HttpClient Library to your project

dependencies {

implementation 'org.apache.httpcomponents:httpclient:4.5.6'

}

For latest Version:- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient

Creating HTTP Client and HTTP Post

1 2	HttpClient httpClient = new DefaultHttpClient(); //Creating HTTP client HttpPost httpPost = new HttpPost("http://www.codebucket.in/api"); //Creating HTTP Post

Building Post Parameters:- The following code will create post parameters pair with key and value.

// Building post parameters, key and value pair

List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);

nameValuePair.add(new BasicNameValuePair("username", "xyz"));

nameValuePair.add(new BasicNameValuePair("password", "abc"));

URL Encoding POST data:-Before making HTTP request you need to encode the post data in order to convert all string data into valid URL format.

// Url Encoding the POST parameters

try {httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

}

catch (UnsupportedEncodingException e) {e.printStackTrace();

}

Finally you need to execute httpPost using the httpClient created before.

// Making HTTP Request

try {

HttpResponse response = httpClient.execute(httpPost);

}catch (IOException e) {

e.printStackTrace();

}

Complete Code

package in.codebucket.httpclientexample;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.client.HttpClient;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

import java.util.ArrayList;

import java.util.List;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

HttpClient httpClient = new DefaultHttpClient();

HttpPost httpPost=new HttpPost("http://www.example.com/login");

List<NameValuePair> nameValuePair=new ArrayList<NameValuePair>(2);

nameValuePair.add(new BasicNameValuePair("email", "user"));

nameValuePair.add(new BasicNameValuePair("Hi","Hello"));

try {

httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

try {

HttpResponse response=httpClient.execute(httpPost);

} catch (IOException e) {

e.printStackTrace();

}

Download Complete Code

Note:

It is recommended to use OkHttp instead of HttpClient.
For the sake of simplicity, we haven’t use any thread here. Don’t make any network call in UI thread.

Also, Refer

1) https://www.androidhive.info/2011/10/android-making-http-requests/

2) http://www.vogella.com/tutorials/ApacheHttpClient/article.html

Puneet Verma