From 6a45ef1c6c21767d80df8c56c70e9ad7b7ccb2fd Mon Sep 17 00:00:00 2001
From: Zkitefly <64117916+zkitefly@users.noreply.github.com>
Date: Wed, 30 Jul 2025 10:16:30 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E4=B8=8B=E8=BD=BD=E9=93=BE?=
 =?UTF-8?q?=E6=8E=A5=E9=87=8D=E5=AE=9A=E5=90=91=E9=80=BB=E8=BE=91=EF=BC=8C?=
 =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E5=8F=AF=E7=94=A8=E6=80=A7=E6=A3=80=E6=9F=A5?=
 =?UTF-8?q?=20(#234)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 _downloads/windows/arm64.md  | 34 ++++++++++++++++++++++++++++------
 _downloads/windows/x86_64.md | 34 ++++++++++++++++++++++++++++------
 2 files changed, 56 insertions(+), 12 deletions(-)

diff --git a/_downloads/windows/arm64.md b/_downloads/windows/arm64.md
index 89e0dd7..cc518ce 100644
--- a/_downloads/windows/arm64.md
+++ b/_downloads/windows/arm64.md
@@ -28,12 +28,34 @@ Can't download? [Click here to download (alternative)](https://alist.8mi.tech/d/
 
 
 <script>
-    setTimeout(function() {
+    async function checkUrl(url) {
+        try {
+            const response = await fetch(url, { method: 'HEAD' });
+            return response.ok;
+        } catch {
+            return false;
+        }
+    }
+
+    async function redirect() {
         const isZhCN = /^zh-CN/i.test(navigator.language);
-        const url = isZhCN 
-            ? "https://alist.8mi.tech/d/mirror/ms-jdk/Auto/microsoft-jdk-21-windows-aarch64.msi" 
-            : "https://aka.ms/download-jdk/microsoft-jdk-21-windows-aarch64.msi";
-        location.href = url;
-    }, 5000); // Wait 5 seconds
+        const url1 = "https://alist.8mi.tech/d/mirror/ms-jdk/Auto/microsoft-jdk-21-windows-aarch64.msi";
+        const url2 = "https://aka.ms/download-jdk/microsoft-jdk-21-windows-aarch64.msi";
+
+        const [url1Available, url2Available] = await Promise.all([
+            checkUrl(url1),
+            checkUrl(url2)
+        ]);
+
+        if (url1Available && !url2Available) {
+            window.location.href = url1;
+        } else if (!url1Available && url2Available) {
+            window.location.href = url2;
+        } else {
+            window.location.href = isZhCN ? url1 : url2;
+        }
+    }
+
+    setTimeout(redirect, 5000); // Wait 5 seconds
 </script>
 
diff --git a/_downloads/windows/x86_64.md b/_downloads/windows/x86_64.md
index 1c3fb5b..01e95ba 100644
--- a/_downloads/windows/x86_64.md
+++ b/_downloads/windows/x86_64.md
@@ -28,12 +28,34 @@ Can't download? [Click here to download (alternative)](https://alist.8mi.tech/d/
 
 
 <script>
-    setTimeout(function() {
+    async function checkUrl(url) {
+        try {
+            const response = await fetch(url, { method: 'HEAD' });
+            return response.ok;
+        } catch {
+            return false;
+        }
+    }
+
+    async function redirect() {
         const isZhCN = /^zh-CN/i.test(navigator.language);
-        const url = isZhCN 
-            ? "https://alist.8mi.tech/d/mirror/ms-jdk/Auto/microsoft-jdk-21-windows-x64.msi" 
-            : "https://aka.ms/download-jdk/microsoft-jdk-21-windows-x64.msi";
-        window.location.href = url;
-    }, 5000); // Wait 5 seconds
+        const url1 = "https://alist.8mi.tech/d/mirror/ms-jdk/Auto/microsoft-jdk-21-windows-x64.msi";
+        const url2 = "https://aka.ms/download-jdk/microsoft-jdk-21-windows-x64.msi";
+
+        const [url1Available, url2Available] = await Promise.all([
+            checkUrl(url1),
+            checkUrl(url2)
+        ]);
+
+        if (url1Available && !url2Available) {
+            window.location.href = url1;
+        } else if (!url1Available && url2Available) {
+            window.location.href = url2;
+        } else {
+            window.location.href = isZhCN ? url1 : url2;
+        }
+    }
+
+    setTimeout(redirect, 5000); // Wait 5 seconds
 </script>