Question

我有一个使用链接设置的web应用程序，当按下此链接时，将下载一个文件。文件位置现在我在我自己的硬盘上。当我从谷歌浏览器下载文件时，它可以工作，但是当我使用IE时，我会得到一个奇怪的乱码文件名。这是我的代码：

[HttpGet]
public HttpResponseMessage GetFile(string filename, string environment)
{
    _requestLogger.LogRequest(Request);

    var validateResult = new InputValidator().ValidateInput(filename);
    if (!validateResult.IsValid)
    {
        return new HttpResponseMessage { StatusCode = HttpStatusCode.BadRequest, ReasonPhrase = validateResult.ErrorMessage };
    }

    filename = SanitizeFileName(filename);

    var filePath = _settings.ResolveFilePath(environment, filename);

    if (!File.Exists(filePath))
    {
        return new HttpResponseMessage(HttpStatusCode.NoContent);
    }

    //Get file
    var stream = new FileStream(filePath, FileMode.Open);

    //Create result
    HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
    //Add content to result
    result.Content = new StreamContent(stream);
    result.Content.Headers.ContentType =
        new MediaTypeHeaderValue("application/octet-stream");
    return result;
}

以下是指向奇怪的filename

图像的链接

我似乎无法弄清楚为什么会这样。有人可以帮忙吗？

Answer 1

尝试添加filename和content-length标题，如下所示：

result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment") {
        FileName = fileName.ToString()
};
response.Content.Headers.ContentLength=stream.Length.ToString();

Answer 2

我想出了我必须做的事情。我创建了这个方法，它解决了我的问题。

public static void AddProperFileNameHeadersIfIE(HttpContextBase httpContext, string fileName)
{
    var browser = httpContext.Request.Browser;

    if (browser != null && browser.Browser.Equals("ie", StringComparison.OrdinalIgnoreCase))
    {
        httpContext.Response.AppendHeader("Content-Disposition", "attachment; filename*=UTF-8''" + HttpUtility.UrlPathEncode(fileName) + "\"");
    }
    else
    {
        httpContext.Response.AppendHeader("Content-Disposition", "attachment; filename=\"" + HttpUtility.UrlPathEncode(fileName) + "\"");
    }
}

从Internet Explorer

2 个答案: