Spring Boot is an open-source Java-based tool used to create Web Applications and Microservices with ease. This article will guide you on how to build a Spring Boot REST API in Java. A REST API like Spring Boot REST API can help you retrieve information from another system. REST is basically a convention for building these HTTP Web Services. This is where REST APIs come into the picture. The Client can directly call the HTTP Services exposed on a Server by sending HTTP requests. Step 7: Testing the Spring Boot REST APIs.Step 2: Connecting Spring Boot to the Database.Step 1: Initializing a Spring Boot Project.Building a Spring Boot REST API in Java.Simplify REST API ETL and Data Integration using Hevo’s No-code Data Pipeline.The annotation specifies the MIME media type that the method produces and returns. The annotation indicates that the hello() method will process HTTP GET requests to the specified URI. The annotation identifies the URI for accessing this resource, relative to the application root. HelloResource.java is a root resource class, which uses the following JAX-RS annotations to implement the RESTful web service: Pom.xml is the Project Object Model with Maven configuration information, including dependencies and plugins necessary for building the project. Use the Project tool window to browse and open files in your project or press Control+Shift+N and type the name of the file. IntelliJ IDEA creates a project with some boilerplate code that you can build and deploy successfully. In the Dependencies list, select the following: In the Version field, select Jakarta EE 9.1 because that's what GlassFish 6.2.5 used in this tutorial is compatible with.įor GlassFish 5, select the Java EE 8 specification. In the Version field, select Jakarta EE 10 because that's what Tomcat 10.1 used in this tutorial is compatible with.įor Tomcat 9, select Java EE 8. Don't select or add an application server, we will do it later. For this tutorial, use Oracle OpenJDK 17 as the project SDK and select the REST service template. In the New Project dialog, select Jakarta EE.Įnter a name for your project: RestGlassfishHelloWorld RestTomcatHelloWorld. In this tutorial, we will create a simple web application.įrom the main menu, select File | New | Project. IntelliJ IDEA includes a dedicated wizard for creating Java Enterprise projects based on various Java EE and Jakarta EE implementations. You will need a web browser to view your web application. For more information about the compatibility between other Tomcat, Java, and Jakarta EE versions, see. This tutorial uses JDK 17, Jakarta EE 10, and Tomcat 10.1. The Tomcat application server version 7 or later. For more information about the compatibility between other GlassFish, Java, and Jakarta EE versions, see. This tutorial uses Oracle OpenJDK 17, Jakarta EE 9.1, and GlassFish 6.2.5. The Web Profile subset should be enough for the purposes of this tutorial. You can get the latest release from the official repository. The GlassFish application server version 4.0 or later. You can get the JDK directly from IntelliJ IDEA as described in Java Development Kit (JDK) or download and install it manually, for example: Oracle JDK or OpenJDK. Java SE Development Kit (JDK) version 1.8 or later Jakarta EE: RESTful Web Services (JAX-RS)įor more information, see Install plugins. If something does not work, make sure that the following plugins are enabled: For more information, see IntelliJ IDEA Ultimate vs IntelliJ IDEA Community Edition Relevant bundled pluginsīy default, all necessary plugins are bundled and enabled in IntelliJ IDEA Ultimate. Java Enterprise development is not supported in the free IntelliJ IDEA Community Edition. Here is what you will need: IntelliJ IDEA Ultimate You will create a new Java Enterprise project, add the necessary Java code, tell IntelliJ IDEA where your GlassFish Tomcat server is located, then use a run configuration to build the artifact, start the server, and deploy the artifact to it. Use the switcher at the top of this page for instructions for a different application server. The service will output Hello, World! when you access a specific URL through the web browser or otherwise send a GET request to this URL. This tutorial describes how to create a simple RESTful web service in IntelliJ IDEA and deploy it to the GlassFish Tomcat application server.
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