Error deploying Spring boot application in Websphere 8.5.5 - spring-boot

Question

I am getting following error message in stdout while starting my application in Websphere 8.5.5:
1/9/20 11:56:48:437 UTC] 000000c0 SystemOut O 11:56:48.435 [WebContainer : 3] ERROR
org.springframework.boot.SpringApplication - Application run failed
java.lang.IllegalStateException: Failed to load property source from location 'classpath:/application.xml'
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:545)
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadForFileExtension(ConfigFileApplicationListener.java:494)
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:464)
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$null$7(ConfigFileApplicationListener.java:443)
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader$$Lambda$290.0000000000368730.accept(Unknown Source)
at java.lang.Iterable.forEach(Iterable.java:86)
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$load$8(ConfigFileApplicationListener.java:443)
The version of spring boot that I am using is 2.2.2.
Why is Spring Boot trying to load the ear deployment descriptor, which is in the META-INF folder?

Answer 1

As M. Deinum says, the problem it is giving is because Spring Boot is trying to load the ear artifact's application.xml file to get properties and gives a parsing error as it does not have the expected format.
I have had this same error when displaying in application servers and it is solved by taking from the MANIFEST.MF file the path /META-INF
In my case, I was including the war plugin with this:
<manifestEntries>
<Class-Path>./ META-INF/</Class-Path>
</manifestEntries>
Try deleting that entry and redeploying.