remove printStackTrace()

Author: RocketMaDev

src/main/java/cn/rocket/assaignmark/gui/Controller.java

@@ -63,15 +63,15 @@ public class Controller {
                     properties.load(in);
                     toBeLoad = properties.getProperty("initialPath");
                 } catch (IOException e) {
-                    e.printStackTrace();
+                    LogManager.getRootLogger().error("Failed to load initial path: ",e);
                 }
             Runtime.getRuntime().addShutdownHook(new Thread(() -> {
                 if (openedPath != null) {
                     try (FileOutputStream out = new FileOutputStream(propertiesFile)) {
                         properties.setProperty("initialPath", openedPath);
                         properties.store(out, null);
                     } catch (IOException e) {
-                        e.printStackTrace();
+                        LogManager.getRootLogger().error("Failed to write properties file: ",e);
                     }
                 }
             }));

src/main/java/cn/rocket/assaignmark/gui/Launcher.java

@@ -39,8 +39,7 @@ public void start(Stage primaryStage) {
         try {
             scene = new Scene(loader.load());
         } catch (IOException e) {
-            LogManager.getRootLogger().error("错误:" + e.getLocalizedMessage());
-            e.printStackTrace();
+            LogManager.getRootLogger().error("Failed to load fxml:",e);
             System.exit(1);
         }
         primaryStage.setTitle("赋分程序");