title: Retrieve healthcheck info if Spring couldn't load context
body: <p>I have several beans in my context. Those beans take data from text files. 
  If text file was not found bean would not be loaded.
  If file format is wrong bean would not be loaded.</p>
  
  <p>Other beans depend on those beans and so if any of them couldn't be loaded context can not be constructed. </p>
  
  <p>Is there a way to get a list of beans, which weren't constructed? </p>
  
  <p>What I want to do is to have a healthcheck page, which serves json over http to find which files couldn't be loaded and why. I'm using external framework to serve http and I'm accessing spring context through static variable.</p>