diff --git a/src/main/java/com/zhangmeng/tools/controller/SSHConnectionController.java b/src/main/java/com/zhangmeng/tools/controller/SSHConnectionController.java
index 7873dab..da40b88 100644
--- a/src/main/java/com/zhangmeng/tools/controller/SSHConnectionController.java
+++ b/src/main/java/com/zhangmeng/tools/controller/SSHConnectionController.java
@@ -9,10 +9,13 @@ import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 import javafx.collections.ListChangeListener;
 import javafx.collections.ObservableList;
+import javafx.event.EventHandler;
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
 import javafx.scene.control.TextArea;
 import javafx.scene.control.TextField;
+import javafx.scene.input.MouseButton;
+import javafx.scene.input.MouseEvent;
 import lombok.extern.slf4j.Slf4j;
 
 /**