Application error on Azure App Service trying to run Java/Springboot jar

Question

Application error on Azure App Service trying to run Java/Springboot jar

Suren 1

Trying to deploy/run a springbok application (jar) on Azure App Service, but seeing an "Application Error".

Application

We built the application using Springboot and wanted to deploy the prebuilt jar file (from /target" folder.

Azure Setup

Created a new App Service using Java 11
Under "Deployment Center" linked with the Github repository that holds the code and jar file under /target
Under App service > Configuration > General Settings > Startup Command
java -jar /target/lead-processing-0.0.1-SNAPSHOT.jar

Logs

   2021-05-05T22:25:23.730536337Z STARTUP_FILE=  
   2021-05-05T22:25:23.737427449Z STARTUP_COMMAND=java -jar /target/lead-processing-0.0.1-SNAPSHOT.jar  
   2021-05-05T22:25:23.738113651Z No STARTUP_FILE available.  
   2021-05-05T22:25:23.738719652Z Running STARTUP_COMMAND: java -jar /target/lead-processing-0.0.1-SNAPSHOT.jar  
   2021-05-05T22:25:24.003600232Z Finished running startup command 'java -jar /target/lead-processing-0.0.1-SNAPSHOT.jar'. Exiting with exit code 1.  
   2021-05-05T22:25:24.004755134Z Error: Unable to access jarfile /target/lead-processing-0.0.1-SNAPSHOT.jar

Are we missing anything?

1 answer

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Answer 1

Ryan Hill 30,281 Microsoft Employee Moderator

@Suren , it appears the platform couldn't find your jar file. Verify lead-processing-0.0.1-SNAPSHOT.jar matches the location in your workflow and that it is in the specified /target folder. See https://learn.microsoft.com/en-us/azure/app-service/deploy-github-actions?tabs=applevel#java.

Suren 1 Reputation point

2021-05-06T16:12:32.677+00:00

I verified it and it exists in the same location. Also tried to move it to root and changed the startup command to be
java -jar lead-processing-0.0.1-SNAPSHOT.jar, did a resend and Github Actions pushed the updates again.

My app is a springbok app and has it embedded server. Works fine locally.
Ryan Hill 30,281 Reputation points Microsoft Employee Moderator

2021-05-07T03:04:34.38+00:00

Do you see any errors or warnings in the deployment logs from GitHub actions? What about Kudu which can check at https://sitename.scm.azurewebsites.net/api/dump, /site/deployments or /logfiles/kudu/trace

If deployment logs look good, another thing to try is placing lead-processing-0.0.1-SNAPSHOT.jar in the /home directory.
Ryan Hill 30,281 Reputation points Microsoft Employee Moderator

2021-05-12T03:51:13.63+00:00

Hi @Suren , I wanted to follow up to see if you discovered any deployment errors on the kudu side or if deploying the jar file to the /home directory corrected your issue.

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Application error on Azure App Service trying to run Java/Springboot jar

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