Gradle building rest spring app can't find main class

Question

I'm trying to do a http://spring.io/guides/gs/rest-service/ tutorial, and I did everything like it is in tutorial.

When I was trying to build with gradle with the gradle.build from the tutorial gradle build failed because of missing

springBoot {
  mainClass = "main.java.hello.Application"
}

I did add it and now compilation start and finish correctly, but as soon as I'm trying to do

java -jar build/libs/gs-rest-service-0.1.0.jar

It throws an error

I have no idea what to do with it. Any help?

Answer 1

It should be hello.Application. main/java is a part of package name / project dir structure.

When added the following piece of code to build.gradle:

springBoot {
  mainClass = "hello.Application"
}

both ./gradlew clean bootRun and ./gradlew clean build with java -jar build/libs/gs-rest-service-0.1.0.jar work well.