修复下载图片类大写后缀名的bug

src/Tools/Drawer.php

@@ -47,7 +47,9 @@ class Drawer
     public function downloadWebImage($url, $path = null)
     {
         // excel画图中下载图片时对图片名做urlencode处理,防止中文名不能正常画图片的bug
-        $filename = urlencode(pathinfo($url, PATHINFO_BASENAME));
+        $filename = urlencode(trim(pathinfo($url, PATHINFO_FILENAME)));
+        $ext = strtolower(pathinfo($url, PATHINFO_EXTENSION));
+        $filename = "$filename.$ext";
         $url = $this->parseUrl($url);
         $path = $this->rootPath . '/download/images/' . ($path ?: $this->savePath);
         if (!is_dir($path)) {
@@ -93,7 +95,7 @@ class Drawer
         $ext = $imgPathInfo['extension']; // 图片扩展名
         [$img_w, $img_h] = getimagesize($imgPath); // 图片大小
 
-        $savePath = $this->rootPath . '/download/board';
+        $savePath = $this->rootPath . '/download/board/' . $this->savePath;
         if (!is_dir($savePath)) {
             // 判断路径是否存在,不存在,则创建
             mkdir($savePath, 0777, true);