Javascript ashx页面在excel中打开，而不是检索到文档

我有一个调用javascript函数“GetDocument”的链接，该函数将用户想要检索的链接ID传递到一个ashx页面，然后从数据库检索文档并将其写回用户浏览器（如果是PDF），或者如果是其他内容，则打开相应的程序。这些可以是PDF、XLS、DOCX。。。。等当用户单击一个PDF链接时，一切正常，PDF在浏览器中打开。但是，当用户打开任何其他内容时，比如说，xlsx excel会打开一个名为.ashx页面的垃圾文件。没有错误发生，一切都可以使用PDF。我有点不知所措

下面是javascript

function GetDocument(id) {
    spl1.loadPage('RightContent', 'FrmDocHandler.ashx?ID=' + id);
}

这是.ashx页面

Public Class FrmDocHandler
    Implements System.Web.IHttpHandler

    Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest

        Dim sID As String = context.Request.QueryString("id")

        Dim fileName As String = String.Empty
        Dim fileType As String = String.Empty
        Dim bytes() As Byte

        bytes = Get_Blob(fileName, fileType, sSql_GetDocument(sID))
        context.Response.Clear()
        'clear the content of the browser
        context.Response.ClearContent()
        context.Response.ClearHeaders()
        context.Response.Buffer = True

        'I tried both of these add header and the same result
        'context.Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName)
        context.Response.AddHeader("Content-Disposition", "inline; filename=" + fileName)

        context.Response.ContentType = GetMIMEType(fileType)

        context.Response.BinaryWrite(bytes)


    End Sub

GetMIMEType返回的MIME类型

Public Const g_MIME_DOC As String = "application/msword"
    Public Const g_MIME_DOCX As String = "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
    Public Const g_MIME_DOT As String = "application/msword"
    Public Const g_MIME_DOTX As String = "application/vnd.openxmlformats-officedocument.wordprocessingml.template"
    Public Const g_MIME_HTM As String = "text/html"
    Public Const g_MIME_HTML As String = "text/html"
    Public Const g_MIME_JPEG As String = "image/jpeg"
    Public Const g_MIME_PDF As String = "application/pdf"
    Public Const g_MIME_PPSX As String = "application/vnd.openxmlformats-officedocument.presentationml.slideshow"
    Public Const g_MIME_PPT As String = "application/vnd.ms-powerpoint"
    Public Const g_MIME_PPTX As String = "application/vnd.openxmlformats-officedocument.presentationml.presentation"
    Public Const g_MIME_XLS As String = "application/vnd.ms-excel"
    Public Const g_MIME_XLSX As String = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
    Public Const g_MIME_XLTX As String = "application/vnd.openxmlformats-officedocument.spreadsheetml.template"
    Public Const g_MIME_XML As String = "application/rss+xml"

---

可能导致文件在Excel中打开的行如下所示：

context.Response.ContentType=GetMIMEType（文件类型）

您可以做以下几件事：

检查

GetMIMEType

返回的MIME类型，并确保它是与PDF相关的类型（

application/PDF

），而不是与Excel相关的类型（

application/vnd.ms Excel

）

检查浏览器端，查看设置了哪些应用程序来处理从服务器发送的mime类型和/或文件扩展名

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你好当用户选择PDF格式的链接时，它会正常工作。当用户选择一个指向除PDF以外的任何内容的链接时，它就失败了。GetMIMEType只是一个小函数，它根据文件扩展名返回MIME类型。我在上面添加了MIME类型