java http

In this tutorial, we will explore how to use the Java HttpClient to upload a file to the server. In the next tutorial, we will cover how to configure HttpClient to accept all SSL certificates. Let’s get started! In the code example below, we will use the Apache HttpClient and the MultipartEntityBuilder. HttpClient Maven Dependencies…

Sometimes we need to consume HTTPS endpoints that do not have valid certificates.  We can do that by configuring the Java HttpClient to accept all SSL certificates, even from an untrusted Certificate Authority. Here you will see how to communicate with HTTPS endpoint that may not have a valid SSL certificate. In the following example,…

import org.apache.http.HttpResponse; import org.apache.http.HttpHeaders; import org.apache.http.client.methods.HttpUriRequest; import org.apache.http.client.methods.RequestBuilder; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import java.io.IOException; public class Test { public static void main(String[] args) throws IOException { try (CloseableHttpClient httpclient = HttpClients.createDefault()) { HttpUriRequest request = RequestBuilder.get() .setUri(“https://jsonplaceholder.typicode.com/todos/1”) // adding headers .setHeader(HttpHeaders.CONTENT_TYPE, “application/json”) .setHeader(“Authorization”, “Bearer 123token”) .build(); System.out.println(“Executing GET request…”); HttpResponse response = httpclient.execute(request);…

<dependency> <groupid>org.apache.httpcomponents</groupid> <artifactid>httpclient</artifactid> <version>4.5.13</version> </dependency> import org.apache.http.HttpHeaders; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpDelete; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import java.io.IOException; public class Test { public static void main(String[] args) throws IOException { try (CloseableHttpClient httpclient = HttpClients.createDefault()) { HttpDelete httpget = new HttpDelete(“https://jsonplaceholder.typicode.com/todos/1”); System.out.println(“Executing DELETE request…”); HttpResponse response = httpclient.execute(httpget); System.out.println(“Status code: ” + response.getStatusLine().getStatusCode()); String…

<dependency> <groupid>org.apache.httpcomponents</groupid> <artifactid>httpclient</artifactid> <version>4.5.13</version> </dependency> import org.apache.http.HttpHeaders; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpPut; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import java.io.IOException; public class Test { public static void main(String[] args) throws IOException { try (CloseableHttpClient httpclient = HttpClients.createDefault()) { HttpPut httpPut = new HttpPut(“https://jsonplaceholder.typicode.com/posts/1”); // specify the PUT body to send to the server as part of…

<dependency> <groupid>org.apache.httpcomponents</groupid> <artifactid>httpclient</artifactid> <version>4.5.13</version> </dependency> import org.apache.http.HttpResponse; import org.apache.http.entity.StringEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import java.io.IOException; public class Test { public static void main(String[] args) throws IOException { try (CloseableHttpClient httpclient = HttpClients.createDefault()) { HttpPost httpPost = new HttpPost(“https://jsonplaceholder.typicode.com/posts”); // specify the POST body to send to the server as part of…

<dependency> <groupid>org.apache.httpcomponents</groupid> <artifactid>httpclient</artifactid> <version>4.5.13</version> </dependency> import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import java.io.IOException; public class Test { public static void main(String[] args) throws IOException { try (CloseableHttpClient httpclient = HttpClients.createDefault()) { HttpGet httpget = new HttpGet(“https://jsonplaceholder.typicode.com/todos/1”); System.out.println(“Executing GET request…”); HttpResponse response = httpclient.execute(httpget); String responseBody = new BasicResponseHandler().handleResponse(response); System.out.println(“Response: ” +…