Spring Boot Web Application with Eclipse in 5 Clicks

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This article represents tips and code samples to get you started quickly with Spring web application within few clicks. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos.
Steps to get started with Spring Boot Web Application
  • Go to Help > Eclipse Marketplace… and search type “spring sts” in Find textfield under Search tab. Install the entry with title such as “Spring Tool Suite (STS) for Eclipse <VersionInfo> Release”.
    Download Spring STS from Eclipse Marketplace

    Download Spring STS from Eclipse Marketplace

    Once installed, you would be asked to restart the Eclipse. Go ahead and restart the eclipse.

  • Open the new Project selector window using shortcut, CTRL + N. Type “Spring Starter” and double-click the entry namely, “Spring Starter Project”. It would take you to next window such as following. Just click “Next” and move to next step.
    Spring Starter Project Creation Dialog Box

    Spring Starter Project Creation Dialog Box

  • On next window, select the dependencies as “Web” as shown in the diagram below.
    Spring Starter Project Creation Dialog Box - Configuration

    Spring Starter Project Creation Dialog Box – Configuration

    Click Finish. This would create the project whose source code and config files/libraries structure would look following. Note the DemoApplication.java file which gets created by default.

    Spring Starter Project Source Code Structure

    Spring Starter Project Source Code Structure

     

  • Right-click on the project as shown below and start the Spring Boot app.
    Spring Starter Project Run as Spring Boot App

    Spring Starter Project Run as Spring Boot App

    Once the web app starts, access the web app in browser using URL such as http://localhost:8080/

    Access Spring Boot App From Browser

    Access Spring Boot App From Browser

     

  • Tweak the DemoApplication code a little to start working with the Web App.
    package com.example;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    @SpringBootApplication
    public class DemoApplication {
    	
    	@RequestMapping("/")
    	@ResponseBody
        String home() {
            return "Hello World. How are you?";
        }
    	
    	public static void main(String[] args) {
    		SpringApplication.run(DemoApplication.class, args);
    	}
    }
    

    The same code could be found on the Spring Boot homepage. Relaunch the web app and see the changes like following by access the http://localhost:8080 in the browser.

    Spring Starter Project Run as Spring Boot App - Hello World

    Spring Starter Project Run as Spring Boot App – Hello World

     

Ajitesh Kumar

Ajitesh Kumar

Ajitesh is passionate about various different technologies including programming languages such as Java/JEE, Javascript, PHP, .NET, C/C++, mobile programming languages etc and, computing fundamentals such as application security, cloud computing, API, mobile apps, google glass, big data etc.Recently, he has been digging deep into the field of data science and machine learning.

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