Question

我写了一个代码来下载大（约160 MB）PDF文件。我可以在本地环境中下载大型PDF文件，没有任何问题，但在生产环境中同样会失败。该应用程序还具有压缩文件然后下载的功能，现在在生产中可以完美运行。我可以下载PDF文件的zip文件（zip文件大小：157 MB），并且zip文件的大小与PDF文件的大小大致相同。错误：单击链接后，开始下载PDF文件，然后在chrome浏览器中显示“网络错误”消息，从而中断了下载过程。在IE浏览器中的消息是：“ test.pdf下载被中断”。我进行了很多搜索，但找不到与我的问题相关的内容。任何人都可以帮助查找为什么出现“网络错误”消息而导致失败的问题是什么？

下面是我下载PDF文件时的代码：

//------ this code goes into web tier ------------
public FileResult DownloadFile(int FilePk, string fileName)
{
        try
        {
             //Clear Browser Header Cache
                var browserInformation = Request.Browser;
                Response.ClearHeaders();
                //Set as private if current browser type is IE
                Response.AppendHeader("cache-control", browserInformation.Browser == "IE" ? "private" : "no-cache");

            var pdfFileByte = MyWCFService.GetFile(FilePk); // this service returns byte[]
            return statement.IsNull() ? null : File(pdfFileByte, "Application/pdf", "File-" + "fileName" + ".pdf");
        }
        catch (Exception ex)
        {
            OnException(ex);
        }

        return null;
    }
//----- this code goes into wcf service which is on app tier---
public byte[] GetFile(int FilePk)
    {
        // Here decalre string filepath variable and get value into it using path present in database
        var fi = new FileInfo(filePath);

        if (!fi.Exists) return null;

        var fileSize = (int)fi.Length;
        var fileInByte = new byte[fileSize];
        using (var fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
        {
            fs.Read(fileInByte, 0, fileSize);
        }
        return fileInByte;
    }

下面是我下载zip文件时的代码：

 //------ this code goes into web tier ------------
public FileResult DownloadFileForAll(int exrqPk, string userFileName)
    {
        try
        {

           //Clear Browser Header Cache
                var browserInformation = Request.Browser;
                Response.ClearHeaders();
                //Set as private if current browser type is IE
                Response.AppendHeader("cache-control", browserInformation.Browser == "IE" ? "private" : "no-cache");
            var statement = MyWCFService.GetFileAll(exrqPk);
            return statement.IsNull() ? null : File(statement, "application/zip", userFileName + ".zip");
        }
        catch (Exception e)
        {
            OnException(e);
        }
        return null;
    }


----- this code goes into wcf service which is on app tier---
public byte[] GetFileAll(int exrqPk)
    {
        // Here decalre string filepath variable and get value into it using path present in database
        var fi = new FileInfo(filePath);

        if (!fi.Exists) return null;

        var fileSize = (int)fi.Length;
        var fileInByte = new byte[fileSize];
        using (var fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
        {
            fs.Read(fileInByte, 0, fileSize);
        }
        return fileInByte;
    }

ASP.NET MVC：大型PDF下载失败，但大型zip成功下载

0 个答案: