no message

DataFusion/src/com/zskk/control/ViewController.java

@@ -229,8 +229,10 @@ public class ViewController extends Controller {
 			return resultSting.toString();
 		} catch (MalformedURLException e) {
 			e.printStackTrace();
+			renderText(e.toString());
 		} catch (IOException e) {
 			e.printStackTrace();
+			renderText(e.toString());
 		}
 		return resultSting.toString();
 	}