Spring boot 3 return 404 on azure app

Florent Bonamis 21

Hi,

We are running a Hello World app on an Azure Linux app.
When we are using Spring boot 2.76, there is no problem. When we are upgrading the sprong boot version to 3.0.4 we are encountering a 404 error.
Is this related to that kind of issue?
https://github.com/spring-projects/spring-boot/issues/33974

Grmacjon-MSFT 17,456 Reputation points

2023-03-07T21:53:38.9733333+00:00

Hi @Florent Bonamis thanks for bringing this to our attention. It could be related. can you please share the tutorial you are following to set up your web app?

Spring Cloud Azure 3.x.x has reached end of life status and is no longer supported. It's suggested to upgrade to the latest version of 4.x. Please refer to Migration Guide for 4.0 to get more information about how to do migration.

Please read this wiki is to find the corresponding Spring Cloud Azure version and its support status with the given Spring Boot / Spring Cloud version.
Florent Bonamis 21 Reputation points

2023-03-08T10:17:01.1433333+00:00

Hi, I did not follow any tutorial
I am only trying to deploy spring boot app on azure web app.
I do not use any Spring Cloud Azure functionalities
Benjamin Possolo 5 Reputation points

2023-03-14T16:49:27.9666667+00:00

I am experiencing the same thing on my Azure Web App Service.

I upgraded my app from spring boot 2.5.5 to spring boot 3.0.4 and now all requests return a 404.

2 answers

Grmacjon-MSFT 17,456 Reputation points

2023-03-10T21:59:12.54+00:00

@Florent Bonamis thanks for the additional info. To deploy a Spring Boot app on Azure Web App please follow the steps in this Azure doc : Quickstart: Deploy your first application to Azure Spring Apps. This tutorial explains how to deploy a small application to run on Azure Spring Apps.

Please let us know if you have other questions.
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Benjamin Possolo 5 Reputation points

2023-03-14T17:03:32.6666667+00:00

The solution is here.

https://github.com/spring-projects/spring-boot/issues/33974#issuecomment-1468484374

Solved by upgrading the ApplicationInsights Java Agent to 3.4.10

My guess is the old agent is not compatible with jars compiled for Java 17.
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Florent Bonamis 21 Reputation points

2023-03-15T12:05:16.69+00:00

Hey @Benjamin Possolo
Thank you for your answer. You fix solved my 404 problems, but I have no logs anymore :(
Did you do something else than changing the property?

Grmacjon-MSFT 17,456 Reputation points

2023-03-29T22:11:56.63+00:00

Hi @Florent Bonamis,

Thank you for taking time to share your feedback. We received a notification about a negative survey and wanted to step in to see if we can assist you further. We are striving to get you to provide a positive survey rating as these surveys directly impact our team and ultimately, we want to ensure we provide you with the best experience possible.

Like Benjamin shared above, updating the agent version to 3.4.10 usually resolves this issue. You mentioned that you're now using logstash and ELK. Glad you found the logging that worked for you.

Another option to review a list of application logs from Azure Spring Apps, sorted by time with the most recent logs shown first, is by running this query:

AppPlatformLogsforSpring | project TimeGenerated , ServiceName , AppName , InstanceName , Log | sort by TimeGenerated desc

To review unsorted log entries that mention an error or exception, run the following query:

AppPlatformLogsforSpring | project TimeGenerated , ServiceName , AppName , InstanceName , Log | where Log contains "error" or Log contains "exception"

I hope this reply helps to provide clarity and I hope you will consider proving an updated survey. If you have further questions, please respond to this message so we can assist you further. Looking forward to your reply.

Saurabh Atri 0 Reputation points Microsoft Employee

2023-04-05T16:11:37.65+00:00

Add: Issue: Upgrading to Java 17, SpringBoot 3.0.4 as Azure App Service leading to 404 error Solution: ++++++++++ Option 1: App Service > Azure configurations update: ApplicationInsightsAgent_EXTENSION_VERSION version to 3.4.10 Option 2: Add the appSettings for ApplicationInsightsAgent_EXTENSION_VERSION in Azure Resource Manager template (ARM template): "apps": [ .... "siteConfig": "appSettings": { "name": "ApplicationInsightsAgent_EXTENSION_VERSION", "value": "3.4.10"}
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Spring boot 3 return 404 on azure app

2 answers