Getting Started with Spring Boot

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Introduction

Spring Boot is a popular framework for building Java-based, production-ready applications. Its simplicity and ability to get projects started quickly make it a favorite among developers. This tutorial will create a simple Spring Boot application with a dummy code example.

Here’s a dummy blog post to test a Spring Boot setup with dummy code. You can copy this content into WordPress to display it in your blog.

Blog Post: Getting Started with Spring Boot

Introduction

Spring Boot is a popular framework for building Java-based, production-ready applications. Its simplicity and ability to get projects started quickly make it a favorite among developers. In this tutorial, we’ll create a simple Spring Boot application with a dummy code example.

Step 1: Project Setup

To start with Spring Boot, follow these steps:

  1. Install Java (JDK 8 or higher).
  2. Download and set up an IDE like IntelliJ IDEA or Eclipse.
  3. Use Spring Initializr to generate a new Spring Boot project:
    • Go to start.spring.io.
    • Select Maven Project with Java and the latest Spring Boot version.
    • Add dependencies like Spring Web.

Step 2: Dummy Spring Boot Code

Here’s a basic Spring Boot application to create a REST API that returns “Hello, World!”.

Main Application Class: DemoApplication.jav

<span class="line"><span style="color: #81A1C1">package</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">com</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">example</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">demo</span><span style="color: #81A1C1">;</span></span>
<span class="line"></span>
<span class="line"><span style="color: #81A1C1">import</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">org</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">springframework</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">boot</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">SpringApplication</span><span style="color: #81A1C1">;</span></span>
<span class="line"><span style="color: #81A1C1">import</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">org</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">springframework</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">boot</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">autoconfigure</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">SpringBootApplication</span><span style="color: #81A1C1">;</span></span>
<span class="line"></span>
<span class="line"><span style="color: #ECEFF4">@</span><span style="color: #D08770">SpringBootApplication</span></span>
<span class="line"><span style="color: #81A1C1">public</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">class</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">DemoApplication</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">{</span></span>
<span class="line"><span style="color: #D8DEE9FF">    </span><span style="color: #81A1C1">public</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">static</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">void</span><span style="color: #D8DEE9FF"> </span><span style="color: #88C0D0">main</span><span style="color: #ECEFF4">(</span><span style="color: #8FBCBB">String</span><span style="color: #ECEFF4">[]</span><span style="color: #D8DEE9FF"> </span><span style="color: #D8DEE9">args</span><span style="color: #ECEFF4">)</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">{</span></span>
<span class="line"><span style="color: #D8DEE9FF">        </span><span style="color: #D8DEE9">SpringApplication</span><span style="color: #ECEFF4">.</span><span style="color: #88C0D0">run</span><span style="color: #ECEFF4">(</span><span style="color: #D8DEE9">DemoApplication</span><span style="color: #ECEFF4">.</span><span style="color: #D8DEE9">class</span><span style="color: #ECEFF4">,</span><span style="color: #D8DEE9FF"> args</span><span style="color: #ECEFF4">)</span><span style="color: #81A1C1">;</span></span>
<span class="line"><span style="color: #D8DEE9FF">    </span><span style="color: #ECEFF4">}</span></span>
<span class="line"><span style="color: #ECEFF4">}</span></span>

Controller Class: HelloController.java

<span class="line"><span style="color: #81A1C1">package</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">com</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">example</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">demo</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">controller</span><span style="color: #81A1C1">;</span></span>
<span class="line"></span>
<span class="line"><span style="color: #81A1C1">import</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">org</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">springframework</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">web</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">bind</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">annotation</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">GetMapping</span><span style="color: #81A1C1">;</span></span>
<span class="line"><span style="color: #81A1C1">import</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">org</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">springframework</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">web</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">bind</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">annotation</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">RestController</span><span style="color: #81A1C1">;</span></span>
<span class="line"></span>
<span class="line"><span style="color: #ECEFF4">@</span><span style="color: #D08770">RestController</span></span>
<span class="line"><span style="color: #81A1C1">public</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">class</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">HelloController</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">{</span></span>
<span class="line"></span>
<span class="line"><span style="color: #D8DEE9FF">    </span><span style="color: #ECEFF4">@</span><span style="color: #D08770">GetMapping</span><span style="color: #ECEFF4">(</span><span style="color: #ECEFF4">"</span><span style="color: #A3BE8C">/hello</span><span style="color: #ECEFF4">"</span><span style="color: #ECEFF4">)</span></span>
<span class="line"><span style="color: #D8DEE9FF">    </span><span style="color: #81A1C1">public</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">String</span><span style="color: #D8DEE9FF"> </span><span style="color: #88C0D0">sayHello</span><span style="color: #ECEFF4">()</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">{</span></span>
<span class="line"><span style="color: #D8DEE9FF">        </span><span style="color: #81A1C1">return</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">"</span><span style="color: #A3BE8C">Hello, World! Welcome to Spring Boot!</span><span style="color: #ECEFF4">"</span><span style="color: #81A1C1">;</span></span>
<span class="line"><span style="color: #D8DEE9FF">    </span><span style="color: #ECEFF4">}</span></span>
<span class="line"><span style="color: #ECEFF4">}</span></span>

Step 3: Run the Application

  1. Navigate to your project folder.
  2. Use the command ./mvnw spring-boot:run (or mvn spring-boot:run if Maven is installed).
  3. Open a browser and go to http://localhost:8080/hello to see the “Hello, World!” message.

Here’s a dummy blog post to test a Spring Boot setup with dummy code. You can copy this content into WordPress to display it in your blog.

Blog Post: Getting Started with Spring Boot

Introduction

Spring Boot is a popular framework for building Java-based, production-ready applications. Its simplicity and ability to get projects started quickly make it a favorite among developers. In this tutorial, we’ll create a simple Spring Boot application with a dummy code example.

Step 1: Project Setup

To start with Spring Boot, follow these steps:

  1. Install Java (JDK 8 or higher).
  2. Download and set up an IDE like IntelliJ IDEA or Eclipse.
  3. Use Spring Initializr to generate a new Spring Boot project:
    • Go to start.spring.io.
    • Select Maven Project with Java and the latest Spring Boot version.
    • Add dependencies like Spring Web.

Step 2: Dummy Spring Boot Code

Here’s a basic Spring Boot application to create a REST API that returns “Hello, World!”.

Main Application Class: DemoApplication.java

<span class="line"><span style="color: #D8DEE9FF">javaCopy code</span><span style="color: #81A1C1"><</span><span style="color: #D8DEE9FF">code</span><span style="color: #81A1C1">>package</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">com</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">example</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">demo</span><span style="color: #81A1C1">;</span></span>
<span class="line"></span>
<span class="line"><span style="color: #81A1C1">import</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">org</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">springframework</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">boot</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">SpringApplication</span><span style="color: #81A1C1">;</span></span>
<span class="line"><span style="color: #81A1C1">import</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">org</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">springframework</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">boot</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">autoconfigure</span><span style="color: #ECEFF4">.</span><span style="color: #8FBCBB">SpringBootApplication</span><span style="color: #81A1C1">;</span></span>
<span class="line"></span>
<span class="line"><span style="color: #ECEFF4">@</span><span style="color: #D08770">SpringBootApplication</span></span>
<span class="line"><span style="color: #81A1C1">public</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">class</span><span style="color: #D8DEE9FF"> </span><span style="color: #8FBCBB">DemoApplication</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">{</span></span>
<span class="line"><span style="color: #D8DEE9FF">    </span><span style="color: #81A1C1">public</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">static</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">void</span><span style="color: #D8DEE9FF"> </span><span style="color: #88C0D0">main</span><span style="color: #ECEFF4">(</span><span style="color: #8FBCBB">String</span><span style="color: #ECEFF4">[]</span><span style="color: #D8DEE9FF"> </span><span style="color: #D8DEE9">args</span><span style="color: #ECEFF4">)</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">{</span></span>
<span class="line"><span style="color: #D8DEE9FF">        </span><span style="color: #D8DEE9">SpringApplication</span><span style="color: #ECEFF4">.</span><span style="color: #88C0D0">run</span><span style="color: #ECEFF4">(</span><span style="color: #D8DEE9">DemoApplication</span><span style="color: #ECEFF4">.</span><span style="color: #D8DEE9">class</span><span style="color: #ECEFF4">,</span><span style="color: #D8DEE9FF"> args</span><span style="color: #ECEFF4">)</span><span style="color: #81A1C1">;</span></span>
<span class="line"><span style="color: #D8DEE9FF">    </span><span style="color: #ECEFF4">}</span></span>
<span class="line"><span style="color: #ECEFF4">}</span></span>
<span class="line"><span style="color: #81A1C1"></</span><span style="color: #D8DEE9FF">code</span><span style="color: #81A1C1">></span></span>

Controller Class: HelloController.java

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