Aug 2, 2019 · In Java, I want to call the URL and get the href Strings as a List. In JavaScript, I would simply write fetch("https://images-api.nasa.gov/search?q=moon") .then(data => data.json()) .then(data => { const items = data .collection .items .map(item => item.links) .flat() .filter(link => link.rel === "preview") .map(link => link.href); // do ...

May 11, 2024 · In this tutorial, we’ll demonstrate how to make a JSON POST request using HttpURLConnection. A quick and practical guide to performing basic HTTP requests using Java's built-in HttpUrlConnection. Read more →. Learn how to authenticate HTTP requests using HttpUrlConnection. Read more →.

Mar 17, 2024 · In this quick tutorial, we illustrate how to use Spring’s RestTemplate to make POST requests sending JSON content. Learn how to use the new TestRestTemplate in Spring Boot to test a simple API. Read more →. Learn how to handle errors with Spring's RestTemplate. Read more →. 2. Setting Up the Example.

I would like to make a simple HTTP POST using JSON in Java. Let's say the URL is www.site.com. and it takes in the value {"name":"myname","age":"20"} labeled as 'details' for example. How would I go about creating the syntax for the POST? I also can't seem to find a POST method in the JSON Javadocs.

Depending on a REST API and on an endpoint to which you are sending a POST request, the request body might be of a different type, for example, it can be a JSON, plain text, XML, etc. 1. How to send a POST request in Java? 1.1. Preparing a request. .POST(HttpRequest.BodyPublishers.ofString(requestBody))

Apr 3, 2024 · The code configures the target URL and JSON String to be passed to the API Call. It then uses HttpURLConnection to create a connection object to the URL. This sets the request method to "POST" and provides input for the connection.

Jan 16, 2023 · To post JSON to a REST API endpoint using Java, you must send an HTTP POST request to the REST API server and provide JSON data in the body of the Java POST message. You must also specify the data type using the Content-Type: application/json request header.

Jan 18, 2024 · In this tutorial, we’ll look at the sending POST requests using Java HttpClient. We’ll show how to send both synchronous and asynchronous POST requests, as well as concurrent POST requests. In addition, we’ll check how to add authentication parameters and JSON bodies to POST requests.

Aug 2, 2020 · Having previously worked with technologies such as “ReactJS”, getting JSON (JavaScript Object Notation) data from a RESTful API is just an “axios” call away. JavaScript makes it so easy ...

Mar 30, 2016 · In this example we shall learn implementing Restful Web Service in Java where the data interchange format shall be JSON. 1. Introduction to RESTful Web Services. RESTful Web Services follow REST architecture which stands for REpresentational State Transfer.