JAX-RS Archives

RESTful Web Services : Simple Tutorial For Beginners

by FavTuts EditorialAugust 26, 2022August 26, 20220

If you are familiar with modern web development then you will have encounter the terms like REST and API. If you have worked with APIs or heard of these terms but do not have complete understanding of how to build your own API or how they communicate and work, this tutorial RESTful web services – simple tutorial for beginners is for you. In this tutorial, I will be sharing what are REST and RESTful APIs, overview of REST principles, understanding the terms Request and Response, REST API Endpoints and at last conclusion.

Jersey + Spring integration example

by FavTuts EditorialJuly 27, 2022July 27, 20220

This tutorial show you how to integrate Jersey web application with Spring framework. Technologies used :Jersey 1.8, Spring 3.0.5.RELEASE, Eclipse 3.6, Maven 3

RESTful Java client with Jersey client

by FavTuts EditorialJuly 27, 2022July 27, 20220

This tutorial show you how to use Jersey client APIs to create a RESTful Java client to perform “GET” and “POST” requests to REST service that created in this “Jersey + Json” example.

RESTful Java client with RESTEasy client framework

by FavTuts EditorialJuly 26, 2022July 27, 20220

This tutorial show you how to create a RESTful Java client with RESTEasy client framework, to perform “GET” and “POST” requests to REST service that created in last “Jackson + JAX-RS” tutorial.

RESTful Java client with Apache HttpClient

by FavTuts EditorialJuly 25, 2022July 26, 20220

Apache HttpClient is a robust and complete solution Java library to perform HTTP operations, including RESTful service. In this tutorial, we show you how to create a RESTful Java client with Apache HttpClient, to perform a “GET” and “POST” request.

RESTful Java client with java.net.URL

by FavTuts EditorialJuly 24, 2022July 24, 20220

In this tutorial, we show you how to create a RESTful Java client with Java build-in HTTP client library. It’s simple to use and good enough to perform basic operations for REST service. The RESTful services from last “Jackson + JAX-RS” article will be reused, and we will use “java.net.URL” and “java.net.HttpURLConnection” to create a simple Java client to send “GET” and “POST” request.

Jersey and HK2 dependency injection (auto scanning)

by FavTuts EditorialJuly 24, 2022July 24, 20220

This article shows how to use HK2 dependency injection framework in Jersey and enable auto-scanning auto-discovery of the declared @Contract and @Service components. Jersey, by default, uses HK2 (Hundred-Kilobyte Kernel) for dependency injection. And the HK2 is an implementation of JSR-330(Dependency Injection for Java). For Jersey and HK2 development, we only need to declare jersey-hk2.

JSON example with Jersey + Jackson

by FavTuts EditorialJuly 24, 2022July 24, 20220

This article shows how to return a JSON response in the Jersey application, using Jackson 2.x. Tested with: Jersey 3.0.2, Grizzly 3 HTTP Server, Jackson 2.12.2 , Java 11, Maven, JUnit 5 and JSONassert 1.5 (Unit Test)

XML example with RESTEasy + JAXB

by FavTuts EditorialJuly 24, 2022July 25, 20220

RESTEasy, is required JAXB to support XML file. To use JAXB in RESTEasy, you need to include the “resteasy-jaxb-provider.jar” dependency. In this tutorial, we show you how to create an “user” object, convert it into XML file, and return it back to the client.

Illegal to inject a message body into a singleton into public org.codehaus.jackson.jaxrs.JacksonJsonProvider

by FavTuts EditorialJuly 24, 2022July 24, 20220

Using Jackson as JSON provider in RESTEasy. With RESTEasy auto scanning enabled. When starting up, it hits following errors and failed to start up any of the RESTEasy services: Illegal to inject a message body into a singleton into public org.codehaus.jackson.jaxrs.JacksonJsonProvider

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