如何下载并保存图像两次

本文关键字：图像 两次 保存 下载 何下载 | 更新日期: 2023-09-27 18:27:46

这是我的代码（取自stackoverflow），用于下载、检查并将图像存储在固定路径上：

private static void DownloadRemoteImageFile(string uri, string path)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    if ((response.StatusCode == HttpStatusCode.OK ||
        response.StatusCode == HttpStatusCode.Moved ||
        response.StatusCode == HttpStatusCode.Redirect) &&
        response.ContentType.StartsWith("image", StringComparison.OrdinalIgnoreCase))
    {
        using (Stream inputStream = response.GetResponseStream())
        using (Stream outputStream = File.OpenWrite(path))
        {
            byte[] buffer = new byte[4096];
            int bytesRead;
            do
            {
                bytesRead = inputStream.Read(buffer, 0, buffer.Length);
                outputStream.Write(buffer, 0, bytesRead);
            } while (bytesRead != 0);
        }
    }
}

现在，假设我想在path和path + "'duplicates'";上创建图像：最好的方法是什么？

回想不同路径的功能（所以我需要下载两次），或者我可以使用多个outputStream吗？

如何下载并保存图像两次

System.Io.File.Copy（路径，重复路径）

只需在循环后复制文件，如下所示：

  if (File.Exists(path))
    File.Copy(path, duplicatePath);

您可以简单地使用多个输出流，如下所示：

using (Stream inputStream = response.GetResponseStream())
using (Stream outputStream = File.OpenWrite(path))
using (Stream outputStream2 = File.OpenWrite(duplicatePath))
{
   byte[] buffer = new byte[4096];
   int bytesRead;
   do
   {
        bytesRead = inputStream.Read(buffer, 0, buffer.Length);
        outputStream.Write(buffer, 0, bytesRead);
        outputStream2.Write(buffer, 0, bytesRead);
    } while (bytesRead != 0);
}
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