fix:title获取失败导致程序异常问题

Author: rickons

src/Import/ArticleImport.php

@@ -78,9 +78,13 @@ public static function getBodyTextByHtml($html)
 
     public static function getTitleTextByHtml($html)
     {
-        $dom = new \DOMDocument();
-        @$dom->loadHTML($html, LIBXML_NOERROR | LIBXML_NOWARNING);
-        $title = $dom->getElementsByTagName('title')->item(0)->nodeValue;
+        try {
+            $dom = new \DOMDocument();
+            @$dom->loadHTML($html, LIBXML_NOERROR | LIBXML_NOWARNING);
+            $title = $dom->getElementsByTagName('title')->item(0)->nodeValue;
+        } catch (\Throwable $th) {
+            $title = '';
+        }
         return trim($title);
     }