diff --git a/app/command/Zm.php b/app/command/Zm.php
index 6358161..cc1f2b0 100644
--- a/app/command/Zm.php
+++ b/app/command/Zm.php
@@ -92,25 +92,25 @@ class Zm extends Command
                             $class_id = $class_details['data']['classSection']['id'];
 
                             if(!empty($class_details['data']['classSection']['video'])){
-                                $file_name = urldecode(basename($class_details['data']['classSection']['video']));
+                                $file_name = $this->getFileNameFromUrl($class_details['data']['classSection']['video']);
                                 $downloadurl = $class_path . '/' . $file_name . '-下载地址.txt';
                                 $this->savetxt($downloadurl,$class_details['data']['classSection']['video']);
                                 $this->download($class_details['data']['classSection']['video'],$class_path,$file_name);
                             }
                             if(!empty($class_details['data']['classSection']['courseware'])){
-                                $file_name = urldecode(basename($class_details['data']['classSection']['courseware']));
+                                $file_name = $this->getFileNameFromUrl($class_details['data']['classSection']['courseware']);
                                 $downloadurl = $class_path . '/' . $file_name . '-下载地址.txt';
                                 $this->savetxt($downloadurl,$class_details['data']['classSection']['courseware']);
                                 $this->download($class_details['data']['classSection']['courseware'],$class_path,$file_name);
                             }
                             if(!empty($class_details['data']['classSection']['construction_draw'])){
-                                $file_name = urldecode(basename($class_details['data']['classSection']['construction_draw']));
+                                $file_name = $this->getFileNameFromUrl($class_details['data']['classSection']['construction_draw']);
                                 $downloadurl = $class_path . '/' . $file_name . '-下载地址.txt';
                                 $this->savetxt($downloadurl,$class_details['data']['classSection']['construction_draw']);
                                 $this->download($class_details['data']['classSection']['construction_draw'],$class_path,$file_name);
                             }
                             if(!empty($class_details['data']['classSection']['construction_draw_3d'])){
-                                $file_name = urldecode(basename($class_details['data']['classSection']['construction_draw_3d']));
+                                $file_name = $this->getFileNameFromUrl($class_details['data']['classSection']['construction_draw_3d']);
                                 $downloadurl = $class_path . '/' . $file_name . '-下载地址.txt';
                                 $this->savetxt($downloadurl,urldecode($class_details['data']['classSection']['construction_draw_3d']));
                                 $this->download($class_details['data']['classSection']['construction_draw_3d'],$class_path,$file_name);
@@ -366,4 +366,29 @@ class Zm extends Command
         fclose($myfile);
         // dump('已保存文本内容：'.$file);
     }
+    /**
+     * 从URL中提取并解码文件名
+     * @param string $url 包含文件名的URL
+     * @param bool $throwExceptions 是否抛出异常 (默认true)
+     * @return string|null 成功返回文件名，失败返回null(仅当$throwExceptions=false时)
+     * @throws \InvalidArgumentException
+     */
+    function getFileNameFromUrl(string $url, bool $throwExceptions = true): ?string
+    {
+        // 解析URL结构
+        $parsed = parse_url($url);
+        
+        // 错误检测逻辑
+        if ($parsed === false || !isset($parsed['path'])) {
+            $errorMsg = "无效的URL格式: " . json_encode($url);
+            if ($throwExceptions) {
+                throw new \InvalidArgumentException($errorMsg);
+            }
+            trigger_error($errorMsg, E_USER_WARNING);
+            return null;
+        }
+
+        // 提取并解码文件名
+        return urldecode(basename($parsed['path']));
+    }
 }
\ No newline at end of file