title: Spring @RequestMapping header with equals
body: <p>I want to use Springs @RequestMapping with the header attribute to detect an <code>Accept</code> header with the value <code>application/json;version=1.*</code>. The plan is to have another method mapped similarly for version 2 which will have the value <code>application/json;version=2.*</code>. </p>
  
  <p>Spring seems to be ignoring the version value. I'm guessing it's treating the equals sign as another header attribute. </p>
  
  <p>Is there a way around this? </p>
  
  <p>Side notes:</p>
  
  <ol>
  <li>I can't update the Spring version to support the <code>consumes</code> attribute</li>
  <li>I can't change the format the request header will come in</li>
  </ol>