Question

我花了一整天的时间试图强制浏览器打开PDF文件，而不是使用System.Web.Mvc.FileResult下载它，并且我以旧的方式使用System.Web.Response这样做：

控制器

 //StaticData.ReportsTemp  it's my  type of Dictionary<string,object>
public async Task<ActionResult> GenerateReport() {
    //some code 
    var tempGuid = Guid.NewGuid().ToString();
    StaticData.ReportsTemp[tempGuid] = File(strem, obj.MediaType, obj.name);
    return Content(opertionGuid);
}

public FileResult DownloadReport(string fileName) {
    FileResult result = null;
    FileStreamResult st = null;
    if (StaticData.ReportsTemp.ContainsKey(fileName)) {
        st = StaticData.ReportsTemp[fileName] as FileStreamResult;
        result = st;
        StaticData.ReportsTemp.Remove(fileName);
        if (st.ContentType == System.Net.Mime.MediaTypeNames.Application.Pdf || 1 == 1) { //Old fashion way
            byte[] buff = null;
            System.IO.BinaryReader br = new System.IO.BinaryReader(st.FileStream);
            buff = br.ReadBytes((int) st.FileStream.Length);
            Response.BinaryWrite(buff);
            Response.AddHeader("content-length", buff.Length.ToString());
            Response.ContentType = st.ContentType;
            Response.AddHeader("Content-Disposition", "inline; filename=" + st.FileDownloadName + ";");
            return null;
        }
    }
    return result;
}

JS

function onSuccess(data, status, xhr) {
    window.open("@Url.RouteUrl(new { Controller = "Main", Action = "DownloadReport" })?filename=" + xhr.responseText,'_brank');
}

我的下载过程分为两个步骤：

1）我生成报告，创建FileStremResult，保存到 StaticData.Reports字典并将字典键返回给客户端
2）使用从步骤1中收到的词典密钥我调用动作从StaticData.Reports字典下载返回FileStremResult的文件

PDF在浏览器中打开，所有其他文件仍然只是下载。

但我仍然想知道是否还有其他方法可以实现这一目标？有没有办法用System.Web.Mvc ActionResult的类来做到这一点？

Answer 1

我不知道StaticData班的工作方式。通常，您可以返回FileResult，如果文件无效或不存在，您可以显示PageNotFound页面。

注意：如果客户端没有安装Acrobat，则无法强制他们在浏览器中查看。

public class ReportFile
{
    public byte[] Data { get; set; }
    public string FileName { get; set; }
    public string ContentType { get; set; }
}

public async Task<ActionResult> GenerateReport()
{
    //some code 
    var tempGuid = Guid.NewGuid().ToString();
    StaticData.ReportsTemp[tempGuid] = new ReportFile
    {
        Data = data, // Convert stream to byte array
        ContentType = obj.MediaType,
        FileName = obj.name
    };
    return Content(tempGuid);
}

public ActionResult DownloadReport(string fileName)
{
    if (StaticData.ReportsTemp.ContainsKey(fileName))
    {
        ReportFile file = StaticData.ReportsTemp[fileName];
        StaticData.ReportsTemp.Remove(fileName);

        if (file.ContentType == MediaTypeNames.Application.Pdf)
        {
            var cd = new ContentDisposition { FileName = file.FileName, Inline = true };
            Response.AppendHeader("Content-Disposition", cd.ToString());
            return File(file.Data, file.ContentType);
        }
    }
    return View("PageNotFound");
}

MVC 5如何强制浏览器打开PDF文件

1 个答案: