From 05251cb4e35be01e9d19e45f64780c3637212edc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=BE=9E=E5=BA=90?=
 <109708109+CiiLu@users.noreply.github.com>
Date: Sun, 1 Feb 2026 17:17:01 +0800
Subject: [PATCH] =?UTF-8?q?=E5=90=AF=E5=8A=A8=E6=97=B6=E6=A3=80=E6=9F=A5?=
 =?UTF-8?q?=20Jar=20=E8=B7=AF=E5=BE=84=E6=98=AF=E5=90=A6=E5=8C=85=E5=90=AB?=
 =?UTF-8?q?=20`!`=20(#5272)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../main/java/org/jackhuang/hmcl/Main.java    | 30 ++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/HMCLBoot/src/main/java/org/jackhuang/hmcl/Main.java b/HMCLBoot/src/main/java/org/jackhuang/hmcl/Main.java
index 457dbe814..adc1f208b 100644
--- a/HMCLBoot/src/main/java/org/jackhuang/hmcl/Main.java
+++ b/HMCLBoot/src/main/java/org/jackhuang/hmcl/Main.java
@@ -20,6 +20,11 @@ package org.jackhuang.hmcl;
 import org.jackhuang.hmcl.util.SwingUtils;
 
 import javax.swing.*;
+import java.net.URISyntaxException;
+import java.nio.file.FileSystemNotFoundException;
+import java.nio.file.Paths;
+import java.security.CodeSource;
+import java.security.ProtectionDomain;
 import java.util.ResourceBundle;
 
 /**
@@ -104,12 +109,35 @@ public final class Main {
 
     private static void checkDirectoryPath() {
         String currentDir = System.getProperty("user.dir", "");
+        String jarPath = getThisJarPath();
         if (currentDir.contains("!")) {
             SwingUtils.initLookAndFeel();
             System.err.println("The current working path contains an exclamation mark: " + currentDir);
             // No Chinese translation because both Swing and JavaFX cannot render Chinese character properly when exclamation mark exists in the path.
-            SwingUtils.showErrorDialog("Exclamation mark(!) is not allowed in the path where HMCL is in.\n" + "The path is " + currentDir);
+            SwingUtils.showErrorDialog("Exclamation mark(!) is not allowed in the working path.\n" + "The path is " + currentDir);
             System.exit(1);
+        } else if (jarPath != null && jarPath.contains("!")) {
+            SwingUtils.initLookAndFeel();
+            System.err.println("The jar path contains an exclamation mark: " + jarPath);
+            // No Chinese translation because both Swing and JavaFX cannot render Chinese character properly when exclamation mark exists in the path.
+            SwingUtils.showErrorDialog("Exclamation mark(!) is not allowed in the path where HMCL is in.\n" + "The path is " + jarPath);
+            System.exit(1);
+        }
+    }
+
+    private static String getThisJarPath() {
+        ProtectionDomain protectionDomain = Main.class.getProtectionDomain();
+        if (protectionDomain == null)
+            return null;
+
+        CodeSource codeSource = protectionDomain.getCodeSource();
+        if (codeSource == null || codeSource.getLocation() == null)
+            return null;
+
+        try {
+            return Paths.get(codeSource.getLocation().toURI()).toAbsolutePath().normalize().toString();
+        } catch (FileSystemNotFoundException | IllegalArgumentException | URISyntaxException e) {
+            return null;
         }
     }