I had run into a strange issue while trying to deploy a simple “Hello World” application on AWS Elastic Beanstalk. I had gone through all the guides available, set
5000, made sure my main class was extending
SpringBootServletInitializer and so on…
My application ran fine locally, I could see “Hello World” in my browser.
While looking at the Beanstalk dashboard, I noticed that it tells me the version of Tomcat and Java:
Tomcat 8.5 with Java 8 running on 64bit Amazon Linux/3.2.2
Okay, so Elastic Beanstalk uses these Java versions… so I checked my
pom.xml file, and noticed…
... <java.version>11</java.version> ...
I changed it to
1.8 (Java versioning is weird and inconsistent… 1.8 is Java 8)
I then ran
mvn clean package and re-uploaded my war file… and boom, “Hello World” appeared in my browser…
What’s funny is, I didn’t see anything in the Beanstalk logs indicating this was the problem! I just gave it a shot and it fixed the issue.