Apart from the process used to create the service, there are also numerous tools used to build, test, and deploy the system, including: For example, persistence logic and domain logic are not intertwined. This not only resulted in a simple set of classes, but a more easily distinguishable set of components. Our order management system was created using Test Driven Development (TDD), where tests were created first and each design decision and implemented component was focused on passing the created test cases. For more information on RESTful web services, see DZone's Foundations of RESTful Architecture Refcard and RESTful Web Services by Leonard Richardson and Sam Ruby. While we will deep dive into the design and implementation intricacies of creating a REST web service in Spring, we will not focus on the conceptual aspects of REST (such as the use of an HTTP GET or POST call). This article also assumes that the reader has a foundational understanding of REST and RESTful web services. For more information on DI in Spring, see the Spring Framework Guide and DZone's Spring Configuration Refcard. Although we will explore the DI framework configurations used and the DI components utilized in our order management system, it is assumed that the reader has at least a conceptual understanding of the need for and premise of DI. It is expected that the reader has at least a novice understanding of dependency injection (DI), particularly DI using the Spring framework. For the remainder of this article, when we refer to our order management system, we are actually referring to the Spring REST service contained in the above repository. Therefore, as we walk through each step in creating our REST service, the source code in the above repository should be visited consistently and used as the authoritative reference for all design and implementation choices. Instead, they serve as a snapshot or reflection of the source code contained in the above repository. The source code snippets in this article are not in-and-of-themselves sufficient for creating a fully functioning REST web service. All of the source code, including these supporting aspects, can be found in the following GitHub repository: While the source code illustrated in this article covers the essential aspects of the order management system, there are other components and code (such as test cases) that support the main service that are not shown. Although this management system will be simple compared to the large-scale RESTful services found today, it will nonetheless demonstrate the basic thought process, design decisions, and implementation tests required to create a Level 3 (hypermedia-driven) Spring REST web service.īy the end of this article, we will have created a fully functional Spring REST order management system. While both have their strengths and weaknesses, this article will focus on Spring and create a simple order management RESTful web application using Spring 4. Within the Java REST ecosystem, there are two popular contenders: Java Enterprise Edition (JavaEE) and Spring. Foremost among these web applications is the Representational State Transfer (REST) web service, with Java becoming one of the most popular implementation languages. In the modern world of interconnected software, web applications have become an indispensable asset. Create the main method that will run the application If your pc and phone are connected to the same WiFi connection, you can use this for testing and parsing JSON in your Android apps. Responder.java will be the handling the restful service. Name it Responder and call the package whatever you want. Under the projects tab to the left, expand the project, right click on the "Source Packages" folder and select New -> Java class. When you click on through and finish the project creation wizard, you are brought to an index.html file. Choose GlassFish Server, make sure Java EE7 is selected below, leave everything else alone, and click Next. Now you are on the Server and Settings Screen. You are now prompted to name the project. In Netbeans 8, go File - New Project -> Java Web -> Web Application. If you already have Netbeans installed, and did not download the Java EE bundles, you can download them from Tools -> Plugins -> available plugins. If you need to download Netbeans, head on over to and download the Java EE bundle. I use Netbeans, but it's not difficult to figure out with Eclipse with the WTP installed. Here's a simple tutorial for setting up a little restful Web service with Jax-Rs. Web development with Java is actually a pleasure these days. Gone are the days of endless XML configuration.
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