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In my spring boot project I am trying to load an xml file located in resources folder. If I try loading file with 

Resource resource= resourceLoader.getResource("classpath:" + filepath);
File tempFile = resource.getFile();

I get following error in docker container where as the file is present in BOOT-INF\classes folder in jar file (packing type is jar)

Exception occur while generating mock sso response java.io.FileNotFoundException: class path resource [mock_sso_response.xml] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:/polst-webapp-2.1.5-SNAPSHOT.jar!/BOOT-INF/classes!/mock_sso_response.xml

However using getInputStream works.

Resource resource= resourceLoader.getResource("classpath:" + MOCK_SSO_RESPONSE_FILE);
InputStream inputStream = resource.getInputStream();

It would be really helpful if someone could share the reason behind this and also is there any better/alternate way to load xml files in spring boot. Any help would be much appreciated

theBittor
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user3657795
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  • What do you pass in variable filepath and in MOCK_SSO_RESPONSE_FILE ? Just to double confirm its having the same value. – Sariq Shaikh Mar 04 '20 at 20:40
  • take a look to [this question](https://stackoverflow.com/questions/25869428/classpath-resource-not-found-when-running-as-jar). In short, ```resource.getFile()``` expects the resource on the filesystem. – theBittor Mar 04 '20 at 20:44
  • @Victor Thank you this answers my questions – user3657795 Mar 05 '20 at 08:47
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    Does this answer your question? [Classpath resource not found when running as jar](https://stackoverflow.com/questions/25869428/classpath-resource-not-found-when-running-as-jar) – theBittor Mar 05 '20 at 11:07

1 Answers1

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From the Spring Resource JavaDoc

Throws: FileNotFoundException - if the resource cannot be resolved as absolute file path, i.e. if the resource is not available in a file system

So it seems the implementation of Resource just doesn't support the usage of getFile(). Usually you want to check with isFile() if the resource can be resolved via getFile().

magicmn
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