保存PDF时XML分析错误

时间:2010-04-13 16:58:42

标签: c# asp.net ihttphandler

我正在尝试使用Http Handler从ASP.NET中的数据库提供pdf文件,但每次我访问该页面时都会收到错误

XML Parsing Error: no element found
Location: https://ucc489/rc/NoteFileHandler.ashx?noteId=1,msdsId=3
Line Number 1, Column 1:

这是我的HttpHandler代码:

public class NoteFileHandler : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        if (context.Request.QueryString.HasKeys())
        {
            if (context.Request.QueryString["noteId"] != null && context.Request.QueryString["msdsId"] != null)
            {
                string nId = context.Request.QueryString["noteId"];
                string mId = context.Request.QueryString["msdsId"];
                DataTable noteFileDt = App_Models.Notes.GetNoteFile(nId, mId);
                if (noteFileDt.Rows.Count > 0)
                {
                    try
                    {
                        context.Response.Clear();
                        context.Response.AddHeader("content-disposition", "attachment;filename=" +
                                                   noteFileDt.Rows[0][0] + ".pdf");
                        context.Response.ContentType = "application/pdf";
                        byte[] file = (byte[])noteFileDt.Rows[0][1];
                        context.Response.BinaryWrite(file);
                        context.Response.End();
                    }
                    catch
                    {
                        context.Response.ContentType = "text/plain";
                        context.Response.Write("File Not Found");
                        context.Response.StatusCode = 404;
                    }

                }
            }
        }
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}

我还需要做什么(服务器配置/其他)来加载我的pdf文件吗?

1 个答案:

答案 0 :(得分:2)

查询字符串看起来不正确:

https://ucc489/rc/NoteFileHandler.ashx?noteId=1,msdsId=3

当然?noteId=1,msdsId=3应为noteId=1&msdsId=3。我不知道这是否与XML错误有关,但这是第一件让我感到错误的事。