修改

Application/Home/Controller/PackageController.class.php

@@ -113,7 +113,7 @@ class PackageController extends Controller
             if (!file_exists($packageUrl)) {
                 $this->error('文件不存在哦，亲!');
             }else{
-                redirect(Request::getHost() . ltrim($packageUrl, '.'));
+                redirect(C('DOMAIN_DOWNLOAD') . ltrim($packageUrl, '.'));
             }
         }
     }