It's not using a HTML page as a bean - it's associating a URL with the bean.
Your error message means that the Spring dispatcher servlet (which you've named "SpreadsheetTool") has some errors and wasn't able to start. It's probably a classpath problem (missing some JARs) - but you'll need to look in your server's error logs to figure out the root problem.
Write once, run anywhere, because there's nowhere to hide! - /. A.C.