The Big Pitfall of Reading Files After Packaging a Spring Boot Project as a JAR — Using ClassPathResource to Get a File Under classpath Fails
Locally the file reads fine, but once packaged as a JAR and uploaded to the server it can't be fetched; the error is: class path resource [xxxx] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:xxxx.jar!/BOOT-INF/classes!xxxx. Enough talk — here's the correct way: use PathMatchingResourcePatternResolver.







