update

js/Desktop/DeskTop.js

@@ -11632,17 +11632,36 @@ U.MD.D.I.downloadFile = function (cid, s, task, t, uid, type, text, loading, spa
 }
 
 function dataURLtoFile_shishi(dataurl, filename) {
-    let arr = dataurl.split(","),
-        mime = arr[0].match(/:(.*?);/)[1],
-        bstr = atob(arr[1]),
-        n = bstr.length,
-        u8arr = new Uint8Array(n);
-    while (n--) {
-        u8arr[n] = bstr.charCodeAt(n);
+    try {
+        if (typeof dataurl !== "string" || dataurl.indexOf(',') === -1) {
+            throw new Error("Invalid dataurl");
+        }
+        let arr = dataurl.split(","),
+            mimeMatch = arr[0].match(/:(.*?);/);
+        if (!mimeMatch) {
+            throw new Error("Mime type not found in dataurl");
+        }
+        let mime = mimeMatch[1];
+        let bstr = atob(arr[1]);
+        let n = bstr.length;
+        let u8arr = new Uint8Array(n);
+        for (let i = 0; i < n; i++) {
+            u8arr[i] = bstr.charCodeAt(i);
+        }
+        // Check for File constructor compatibility
+        if (typeof File === "function") {
+            return new File([u8arr], filename, { type: mime });
+        } else {
+            // fallback for very old browsers
+            let blob = new Blob([u8arr], { type: mime });
+            blob.name = filename;
+            return blob;
+        }
+    } catch(e) {
+        console.error("dataURLtoFile_shishi error:", e, dataurl, filename);
+        // 返回null，调用方自行判断
+        return null;
     }
-    return new File([u8arr], filename, {
-        type: mime
-    });
 }
 
 U.MD.D.I.openApplicationUpload = function (str, cid, stage, task, tool) {