title: Apache FOP: How to set base URL for accessing external resource using relative path
body: <p>In my .xsl file I am using external graphics like this<br>
  <code>&lt;fo:external-graphic width="90pt" height="29pt" src="url(xsl/logo.jpg)"/&gt;</code>  </p>
  
  <p>But image is not getting loaded in the generated PDF and I get this error in console.<br>
  <code>[ERROR] Error while creating area : Error with image URL: xsl\logo.jpg (The system cannotfind the path specified) and no base URL is specified</code></p>
  
  <p>How do I solve this issue? I guess setting the base URL will do. But how to set the base URL? Please help.</p>