diff --git a/jeecgboot-vue3-master/src/views/UpfilePersion/UpfilePersionList.vue b/jeecgboot-vue3-master/src/views/UpfilePersion/UpfilePersionList.vue
index 5db6dd33..b427a9e3 100644
--- a/jeecgboot-vue3-master/src/views/UpfilePersion/UpfilePersionList.vue
+++ b/jeecgboot-vue3-master/src/views/UpfilePersion/UpfilePersionList.vue
@@ -353,7 +353,13 @@
     const fileUrl = `${globalSetting.domainUrl}${getDownWork}?id=${record.id}`;
     const extName = record.url.substring(record.url.lastIndexOf('.'));
     const previewUrl = `${fileUrl}&fullfilename=${new Date().getTime()}${extName}`;
-    window.open(previewServerUrl + encodeURIComponent(Base64.encode(previewUrl)));
+    window.open(previewServerUrl + encodeURIComponent(base64Encode(previewUrl)));
+  }
+
+  function base64Encode(str: string): string {
+    return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function(match, p1) {
+      return String.fromCharCode('0x' + p1);
+    }));
   }
 
   function handleDown(record) {