Why is deploying gradle java app to heroku failing?

Question

I am trying to deploy a gradle java app to heroku from my local machine. My project contains the following files

I have defined the following tasks in my build.gradle

task stage {
  dependsOn build
}

task wrapper(type: Wrapper) {
    gradleVersion = '2.12'
}

The content of ProcFile is as follows:

web: java -Dserver.port=$PORT $JAVA_OPTS -jar target/demo-0.0.1-SNAPSHOT.jar

While executing git commit heroku master I get the following error

while executing git ls-files gradle the following files are listed

Could you please suggest why I am getting the error while deploying the app to heroku server?

Answer 1

If you are using gradlew, then you must also add your gradle/wrapper/gradle-wrapper.jar and gradle/wrapper/gradle-wrapper.properties to your Git repository. If you do not add these files, you will receive an error such as:

 -----> executing ./gradlew stage Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain 

And to solve it:

You can add the wrapper files by running these commands:

 git add gradle/wrapper git commit -m "Gradle Wrapper" 

From Deploying Gradle apps on Heroku .

Answer 2

You don't need this

task stage{
    dependsOn build}
    task wrapper(type:Wrapper){
    gradleVersion = '5.6.1'
}

Instead try using this:

task stage(dependsOn: ['clean', 'installDist'])