refactor(config): enhance password validation and method naming in Gl…

…obalConfig

Improve the password validation logic by adding a check for blank strings
before attempting encryption. This prevents potential encryption of null orempty values. Also, rename the `getIsLoadImage` method to `isLoadImage` for
better readability and consistency with Java naming conventions.

src/main/java/com/heybcat/docker/pull/core/sftp/SftpUploader.java

@@ -97,7 +97,7 @@ public void end() {
                         }
                     });
 
-                    if (GlobalConfig.getIsLoadImage()) {
+                    if (GlobalConfig.isLoadImage()) {
                         loadToDocker(targetPath, imageFile.getName(),
                             buildChannelExec(sshHost, Integer.valueOf(sshPort), sshUser, sshPassword));
                     }

src/main/java/com/heybcat/docker/pull/web/config/GlobalConfig.java

@@ -1,6 +1,7 @@
 package com.heybcat.docker.pull.web.config;
 
 import com.heybcat.docker.pull.util.CryptoUtil;
+import xyz.ldqc.tightcall.util.StringUtil;
 
 /**
  * @author Fetters
@@ -76,11 +77,14 @@ public static void setSshUser(String sshUser) {
     }
 
     public static String getSshPassword() {
-        if (sshPassword.matches("^[_+]+$")){
-            return sshPassword;
-
+        if (StringUtil.isNotBlank(sshPassword)){
+            if (sshPassword.matches("^[_+]+$")){
+                return sshPassword;
+            }else {
+                return CryptoUtil.moduloEncrypt(sshPassword);
+            }
         }else {
-            return CryptoUtil.moduloEncrypt(sshPassword);
+            return "";
         }
     }
 
@@ -100,11 +104,15 @@ public static void setSshSavePath(String sshSavePath) {
         GlobalConfig.sshSavePath = sshSavePath;
     }
 
-    public static boolean getIsLoadImage() {
+    public static boolean isLoadImage() {
         return isLoadImage.equals("true");
     }
 
     public static void setIsLoadImage(String isLoadImage) {
         GlobalConfig.isLoadImage = isLoadImage;
     }
+
+    public static String getIsLoadImage(){
+        return isLoadImage;
+    }
 }