SpringBoot Invalid classpath index manifest attribute in war files built with Maven

When packaging a war file, the Spring Boot Maven plugin will add a Spring-Boot-Classpath-Index: WEB-INF/classpath.idx entry to the META-INF/MANIFEST.MF file. The classpath index is not currently supported with war files and the index file named in the manifest entry does not exist in the archive.

Comment From: hyslopc

@scottfrederick thx for this fix :). I had this exact problem. Is the world getting smaller, or is it just me ;)?