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如何使用ASP.NET和C流式处理Excel2007或Word 2007文件#

ms-word excel asp.net c#

Kevin · 技术社区 · 15 年前

我正在开发一个网络应用程序,需要传输各种文件。我可以做PDF、图像和旧的办公文档。但是,当我尝试处理2007文档时,它会中断。这是我的代码:

    Response.Buffer = true;
    Response.Clear();
    Response.ClearContent();
    Response.ClearHeaders();
    switch (FileExtension.ToLower())
    {
        case "pdf":
            Response.ContentType = "application/pdf";
            break;
        case "doc":
            Response.ContentType = "application/msword";
            break;
        case "docx":
            Response.ContentType = "application/vnd.ms-word.document.12";
            break;
        case "xls":
            Response.ContentType = "application/vnd.ms-excel";
            break;
        case "xlsx":
            Response.ContentType = "application/vnd.ms-excel.12";
            break;
        default:
            Response.ContentType = "image/jpeg";
            break;
    }
    Response.BinaryWrite(buffer);

我得到的错误是:

An invalid character was found in text content. Error processing resource 'http://DomainName/GetFile.aspx...

PK

有什么建议吗?

3 回复 | 直到 12 年前

Erv Walter 15 年前

根据简短的Web搜索,Word和Excel的正确MIME类型为:

application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

http://www.bram.us/2007/05/25/office-2007-mime-types-for-iis/

编辑:

下面的简化示例适用于我。它与您的不同之处在于,它使用一个通用的处理程序而不是一个Web表单(无论如何,这更适合于类似的事情)。

要测试它,请确保在应用程序的顶级文件夹中有一个名为book1.xlsx的Excel2007文件。

DownloadSpreadsheet.ashx:

<%@ WebHandler Language="C#" Class="DownloadSpreadsheetHandler" %>

using System;
using System.Web;
using System.IO;

public class DownloadSpreadsheetHandler: IHttpHandler {

    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
        string path = context.Server.MapPath("~/Book1.xlsx");
        using (FileStream spreadsheet = File.OpenRead(path))
        {
            CopyStream(spreadsheet, context.Response.OutputStream);
        }
    }

    public bool IsReusable {
        get {
            return false;
        }
    }

    private static void CopyStream(Stream input, Stream output)
    {
        byte[] buffer = new byte[32768];
        while (true)
        {
            int read = input.Read(buffer, 0, buffer.Length);
            if (read <= 0)
                return;
            output.Write(buffer, 0, read);
        }
    }

}

Abdelrahman ELGAMAL 12 年前

.doc


application/msword

.dot


application/msword

.docx


application/vnd.openxmlformats-officedocument.wordprocessingml.document

.dotx


application/vnd.openxmlformats-officedocument.wordprocessingml.template

.docm


application/vnd.ms-word.document.macroEnabled.12

.dotm


application/vnd.ms-word.template.macroEnabled.12

.xls


application/vnd.ms-excel

.xlt


application/vnd.ms-excel

.xla


application/vnd.ms-excel

.xlsx


application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

.xltx


application/vnd.openxmlformats-officedocument.spreadsheetml.template

.xlsm


application/vnd.ms-excel.sheet.macroEnabled.12

.xltm


application/vnd.ms-excel.template.macroEnabled.12

.xlam


application/vnd.ms-excel.addin.macroEnabled.12

.xlsb


application/vnd.ms-excel.sheet.binary.macroEnabled.12

.ppt


application/vnd.ms-powerpoint

.pot


application/vnd.ms-powerpoint

.pps


application/vnd.ms-powerpoint

.ppa


application/vnd.ms-powerpoint

.pptx


application/vnd.openxmlformats-officedocument.presentationml.presentation

.potx


application/vnd.openxmlformats-officedocument.presentationml.template

.ppsx


application/vnd.openxmlformats-officedocument.presentationml.slideshow

.ppam


application/vnd.ms-powerpoint.addin.macroEnabled.12

.pptm


application/vnd.ms-powerpoint.presentation.macroEnabled.12

.potm


application/vnd.ms-powerpoint.presentation.macroEnabled.12

.ppsm


application/vnd.ms-powerpoint.slideshow.macroEnabled.12

Nij 15 年前

对于要使用Excel打开的csv格式文件,我们使用: Response.ContentType = "application/msexcel";

不过,也许我们不必担心,因为它不是真正的XLS文件。