抓取车辆

app/common/service/UploadService.php

@@ -46,7 +46,8 @@ class UploadService
             $extensionFromPath = pathinfo($basename, PATHINFO_EXTENSION);
             $extension = $extensionFromName ?: $extensionFromPath;
 
-            $mime = mime_content_type($filePath) ?: 'application/octet-stream';
+            // 获取 MIME 类型，如果函数不可用则使用扩展名判断
+            $mime = $this->getMimeType($filePath, $extension);
             $size = filesize($filePath) ?: 0;
 
             $sceneUrl = $scene ? ($scene . '/') : '';
@@ -116,6 +117,49 @@ class UploadService
         }
     }
 
+    /**
+     * 获取文件的 MIME 类型
+     * 优先使用 mime_content_type()，不可用时根据扩展名判断
+     *
+     * @param string $filePath 文件路径
+     * @param string $extension 文件扩展名
+     * @return string
+     */
+    private function getMimeType(string $filePath, string $extension = ''): string
+    {
+        // 优先使用系统函数
+        if (function_exists('mime_content_type')) {
+            $mime = mime_content_type($filePath);
+            if ($mime !== false && $mime !== '') {
+                return $mime;
+            }
+        }
+
+        // 降级：根据扩展名判断
+        $extension = strtolower(ltrim($extension, '.'));
+        $mimeTypes = [
+            'jpg' => 'image/jpeg',
+            'jpeg' => 'image/jpeg',
+            'png' => 'image/png',
+            'gif' => 'image/gif',
+            'webp' => 'image/webp',
+            'bmp' => 'image/bmp',
+            'svg' => 'image/svg+xml',
+            'pdf' => 'application/pdf',
+            'doc' => 'application/msword',
+            'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+            'xls' => 'application/vnd.ms-excel',
+            'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+            'zip' => 'application/zip',
+            'rar' => 'application/x-rar-compressed',
+            'mp4' => 'video/mp4',
+            'mp3' => 'audio/mpeg',
+            'txt' => 'text/plain',
+        ];
+
+        return $mimeTypes[$extension] ?? 'application/octet-stream';
+    }
+
     /**
      * 删除 OSS 上的文件
      *