Deploying a Spring Boot Application to AWS

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Introduction

Spring Boot is an excellent framework for building RESTful APIs and microservices. When combined with AWS, you can deploy your applications to the cloud for scalability and reliability. In this blog, we’ll create a dummy Spring Boot application and deploy it to AWS Elastic Beanstalk.

Step 1: Create a Spring Boot Application

We will create a basic Spring Boot REST API that returns a “Hello, AWS!” message.

Main Application Class: DemoApplication.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: #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">/aws</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, AWS! This is a Spring Boot application.</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 2: Package the Application

  1. Use Maven to package the Spring Boot application into a JAR file:bashCopy codemvn clean package
  2. This will create a demo-0.0.1-SNAPSHOT.jar file in the target directory.

Step 3: Set Up AWS Elastic Beanstalk

Step 3.1: Create an AWS Account

  1. Go to AWS Signup and create an account if you don’t have one.
  2. Use the Free Tier for basic testing.

Step 3.2: Set Up Elastic Beanstalk

  1. Log in to the AWS Management Console.
  2. Navigate to Elastic Beanstalk.
  3. Click Create Application and fill in the details:
    • Platform: Java
    • Application Code: Select “Upload your code later.”
  4. Launch the environment.

Step 4: Deploy the Application

  1. Navigate to your Elastic Beanstalk environment.
  2. Click Upload and Deploy.
  3. Choose your JAR file (demo-0.0.1-SNAPSHOT.jar) and upload it.
  4. AWS Elastic Beanstalk will handle the deployment process.

Step 5: Test the Deployed Application

  1. Once deployment is complete, you’ll get a public URL for your Elastic Beanstalk environment.
  2. Open the browser and go to: Arduino
  3. http://<your-environment-url>/aws
  4. You should see:csharp
  5. Hello, AWS! This is a Spring Boot application.

Here’s a dummy blog post for creating a Spring Boot application and deploying it to AWS (Amazon Web Services). This is great for testing purposes and understanding the workflow of deploying Spring Boot apps on AWS.

Blog Post: Deploying a Spring Boot Application to AWS

Introduction

<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">/aws</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, AWS! This is a Spring Boot application.</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 1: Create a Spring Boot Application

We will create a basic Spring Boot REST API that returns a “Hello, AWS!” message.

Step 2: Package the Application

  1. Use Maven to package the Spring Boot application into a JAR file:bashCopy codemvn clean package This will create a demo-0.0.1-SNAPSHOT.jar file in the target directory.

Step 3: Set Up AWS Elastic Beanstalk

Step 3.1: Create an AWS Account

  1. Go to AWS Signup and create an account if you don’t have one.
  2. Use the Free Tier for basic testing.

Step 3.2: Set Up Elastic Beanstalk

  1. Log in to the AWS Management Console.
  2. Navigate to Elastic Beanstalk.
  3. Click Create Application and fill in the details:
    • Platform: Java
    • Application Code: Select “Upload your code later.”
  4. Launch the environment.

Step 4: Deploy the Application

  1. Navigate to your Elastic Beanstalk environment.
  2. Click Upload and Deploy.
  3. Choose your JAR file (demo-0.0.1-SNAPSHOT.jar) and upload it.
  4. AWS Elastic Beanstalk will handle the deployment process.

Step 5: Test the Deployed Application

  1. Once deployment is complete, you’ll get a public URL for your Elastic Beanstalk environment.
  2. Open the browser and go to:arduinoCopy codehttp://<your-environment-url>/aws
  3. You should see:csharpCopy codeHello, AWS! This is a Spring Boot application.

Step 6: Dummy application.properties Configuration

Here’s a basic application.properties file for testing:

<span class="line"><span style="color: #D8DEE9FF"># </span><span style="color: #8FBCBB">Server</span><span style="color: #D8DEE9FF"> port</span></span>
<span class="line"><span style="color: #D8DEE9">server</span><span style="color: #ECEFF4">.</span><span style="color: #D8DEE9">port</span><span style="color: #81A1C1">=</span><span style="color: #B48EAD">5000</span></span>
<span class="line"></span>
<span class="line"><span style="color: #D8DEE9FF"># AWS</span><span style="color: #81A1C1">-</span><span style="color: #D8DEE9FF">related </span><span style="color: #88C0D0">settings</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">(</span><span style="color: #81A1C1">if</span><span style="color: #D8DEE9FF"> needed</span><span style="color: #ECEFF4">)</span></span>
<span class="line"><span style="color: #D8DEE9">spring</span><span style="color: #ECEFF4">.</span><span style="color: #D8DEE9">application</span><span style="color: #ECEFF4">.</span><span style="color: #D8DEE9">name</span><span style="color: #81A1C1">=</span><span style="color: #8FBCBB">DemoOnAWS</span></span>

Step 7: Cleanup Resources

Once you are done testing:

  1. Go to the Elastic Beanstalk dashboard.
  2. Delete the application and environment to avoid incurring costs.

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