Break Result doGet into two methods to match lsst-tap-service version

tap/src/main/java/ca/nrc/cadc/sample/ResultsServlet.java

@@ -28,10 +28,23 @@ public class ResultsServlet extends HttpServlet {
      */
     @Override
     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
-        String path = request.getPathInfo();
+        try {
+            String path = request.getPathInfo();
+            String redirectUrl = generateRedirectUrl(bucketURL, path);
+            response.sendRedirect(redirectUrl);
+        } catch (Exception e) {
+            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "An error occurred while processing the request.");
+        }
+    }
+
+    /**
+     * Generates the redirect URL based on a path.
+     *
+     * @param path the request path
+     * @return the redirect URL constructed using the bucket URL and results file
+     */
+    private String generateRedirectUrl(String bucketUrlString, String path) {
         String resultsFile  = path.substring(1);
-        String redirectUrl = bucketURL + "/" + resultsFile;
-        log.debug("Redirect URL: " + redirectUrl);
-        response.sendRedirect(redirectUrl);
+        return bucketUrlString + "/" + resultsFile;
     }
 }