附件预览

@@ -26,18 +26,28 @@ class Attachment extends Base {
         $filename = PUBLIC_PATH.$path;
         if(file_exists($filename)){
             $file = new \SplFileInfo($filename);
-            if(in_array($file->getExtension(),['jpg','jpeg','png','gif','mp4','mp3','pdf','txt','doc','docx','xls','xlsx','ppt','pptx','eml'])){
-                app()->header("Content-Type",$file->getType());
+            // 'doc','docx','xls','xlsx','ppt','pptx'
+            if(in_array($file->getExtension(),[
+                'jpg','jpeg','png','gif','mp4','mp3','pdf','txt','eml','log','html','htm','htmls','xml','md'
+            ])){
+                $mime = mime_content_type($file->getRealPath());
+                // 邮件类型
+                if (str_contains($mime, 'message/')){
+                    $mime = "text/plain";
+                }else {
                     app()->header("Content-Disposition","inline; filename=".$file->getFilename());
                     app()->header("Content-Transfer-Encoding","binary");
                     app()->header("Accept-Ranges","bytes");
+                }
+                app()->header("Content-Type",$mime);
+
                 app()->header("Content-Length",$file->getSize());
-                app()->header("Cache-Control","max-age=0");
+                app()->header("Cache-Control","public, max-age=31536000");
                 app()->header("Last-Modified",$file->getMTime());
                 app()->header("Expires",gmdate("D, d M Y H:i:s", time() + 3600 * 24 * 365) . " GMT");
                 return file_get_contents($file->getPathname()) ;
             }
-            return "<div style='text-align: center'>“".$file->getFilename()."“ 当前附件不支持预览</div>";
+            return "<div style='text-align: center'>当前附件不支持预览</div>";
         }
         return "<div style='text-align: center'>404 附件不存在</div>";
     }