修复五位字符的封面名称问题

crawler.go

@@ -111,6 +111,15 @@ func (c *Crawler) fetchCoverImg(code string) error {
 	imgUrl := strings.ReplaceAll(c.config.GetString("crawler.url"), `*`, code)
 	suffix := filepath.Ext(imgUrl)
 	nameSlice := strings.Split(code, "00")
+
+	if len(nameSlice) < 2 {
+		return nil
+	}
+
+	if len(nameSlice[0]) > 4 {
+		nameSlice[0] = nameSlice[0][1:]
+	}
+
 	fileName := strings.Join([]string{
 		c.outputPath,
 		string(os.PathSeparator),