基于AWS部署JSP/Servlets网站至已购域名的流程指引请求

Got it, let's walk through exactly how to get your JSP/Servlet site up on AWS with your custom domain. I've done this a bunch of times, so here's the step-by-step breakdown that works reliably:

First, get your project ready for AWS:

• Package your app as a WAR file: If you're using Maven, run mvn package in your project root—this will generate a .war file in the target directory. For Gradle, use gradle war to get the WAR in the build/libs folder. Double-check that the WAR works locally with your Tomcat instance before moving on.
• Confirm AWS access: Make sure your AWS account has permissions for services like Elastic Beanstalk/EC2, Route 53, and AWS Certificate Manager (ACM). You'll also need your custom domain registered (either through AWS Route 53 or another registrar—we'll link it later).

AWS has two solid paths for JSP/Servlet apps—pick the one that fits your need for control vs. low maintenance:

Option A: Elastic Beanstalk (Managed, Low Effort) #

This is my go-to for most JSP/Servlet apps because AWS handles all the infrastructure heavy lifting:

1. Log into the AWS Console, search for Elastic Beanstalk, and click "Create Application".
2. Name your application, then under "Platform", select Tomcat. Choose the Java version matching your project (e.g., Corretto 17 + Tomcat 10) and keep the "Web server environment" type selected.
3. Under "Application code", select "Upload your code", then upload your WAR file. You can leave the rest of the default settings for now.
4. Click "Create application" and wait 5-10 minutes—Elastic Beanstalk will spin up an EC2 instance, load balancer, security groups, and deploy your app automatically.
5. Link your custom domain:
   • First, use AWS Certificate Manager (ACM) to request a free SSL certificate for your domain (make sure to validate it via DNS or email).
   • Go back to your Elastic Beanstalk environment, navigate to Configuration > Load balancer, then under "Listeners", add an HTTPS listener using your ACM certificate.
   • Head to Route 53 (or your domain registrar) and create a CNAME record pointing your custom domain to the Elastic Beanstalk environment's default URL (looks like your-env.elasticbeanstalk.com).

Option B: EC2 with Tomcat (Full Control) #

If you need to customize Tomcat settings or server configurations, use this approach:

1. Launch an EC2 instance:
   • Choose a base OS (Amazon Linux 2 or Ubuntu work great). Pick a t2.micro instance for the free tier (if eligible).
   • Configure the security group to allow inbound traffic on ports 22 (SSH), 80 (HTTP), and 443 (HTTPS).
   • Launch the instance and download the key pair for SSH access.
2. Install Java and Tomcat:
   • For Amazon Linux 2:

     sudo yum update -y
     sudo yum install java-17-amazon-corretto -y
     sudo mkdir -p /opt/tomcat
     sudo wget https://dlcdn.apache.org/tomcat/tomcat-10/v10.1.18/bin/apache-tomcat-10.1.18.tar.gz -P /tmp
     sudo tar xzvf /tmp/apache-tomcat-10.1.18.tar.gz -C /opt/tomcat --strip-components=1
     sudo chown -R ec2-user:ec2-user /opt/tomcat
     

   • For Ubuntu:

     sudo apt update && sudo apt install openjdk-17-jdk tomcat9 -y
     

3. Deploy your WAR file:
   • Use scp to upload your WAR to Tomcat's webapps directory:

     scp -i your-key-pair.pem your-app.war ec2-user@<your-ec2-public-ip>:/opt/tomcat/webapps/
     

   • Tomcat will automatically unpack and deploy the WAR on startup. Start/restart Tomcat with sudo systemctl start tomcat (or sudo /opt/tomcat/bin/startup.sh if not using systemd).
4. Link your custom domain:
   • Assign an Elastic IP to your EC2 instance (so the IP doesn't change on restart).
   • Use ACM to get an SSL certificate, then either configure Tomcat to use HTTPS (edit server.xml to add the certificate) or set up Nginx as a reverse proxy for easier HTTPS management.
   • In Route 53, create an A record pointing your domain to the Elastic IP.

• Test your site by visiting your custom domain (make sure HTTP/HTTPS both work). Try out key features like form submissions or database connections—if your app uses a database, ensure the EC2/Beanstalk security group allows outbound traffic to your RDS (or other DB) instance.
• Check logs if something breaks:
  • Elastic Beanstalk: Go to Logs > Request Logs > Full Logs to download and inspect.
  • EC2: View Tomcat logs with tail -f /opt/tomcat/logs/catalina.out.
• Optional: Set up auto-scaling in Elastic Beanstalk (under Configuration > Capacity) or create an Auto Scaling Group for EC2 if you expect traffic spikes.

Let me know if you hit any snags—like SSL validation issues or Tomcat deployment errors, I can help troubleshoot those specifics.

内容的提问来源于stack exchange，提问作者user9214988