title: Spring Boot @RequestParameter Unexpected Behavior
body: <p>I have a simple Spring Boot MVC controller with the following @Request mapping. I'm using Thymeleaf for view.</p>
  
  <pre><code>@RequestMapping({"", "/", "index", "index.html"})
    public String index(){
        return "index";
   }
  </code></pre>
  
  <p>The index.html is present in resources/templates/index.html and I'm able to view it using <a href="http://localhost:8080" rel="nofollow noreferrer">http://localhost:8080</a></p>
  
  <p>However, <a href="http://localhost:8080/index" rel="nofollow noreferrer">http://localhost:8080/index</a> and <a href="http://localhost:8080/index.html" rel="nofollow noreferrer">http://localhost:8080/index.html</a> results in White Label Error Page. What am I doing wrong?</p>