Vb.net 从Mvc路由返回错误的http状态代码
我有一个asp.NETMVC路由,它接受一个url并执行一个简单的get,然后从请求返回状态代码Vb.net 从Mvc路由返回错误的http状态代码,vb.net,asp.net-mvc-2,http-status-code-404,http-status-codes,Vb.net,Asp.net Mvc 2,Http Status Code 404,Http Status Codes,我有一个asp.NETMVC路由,它接受一个url并执行一个简单的get,然后从请求返回状态代码 <AcceptVerbs(HttpVerbs.Post)> _ Public Function ValidateUrlStatusCode(ByVal url As String) As ActionResult Dim code As Integer = 0 Try Dim request As HttpWebRequest = CType(WebReques
<AcceptVerbs(HttpVerbs.Post)> _
Public Function ValidateUrlStatusCode(ByVal url As String) As ActionResult
Dim code As Integer = 0
Try
Dim request As HttpWebRequest = CType(WebRequest.Create(url), HttpWebRequest)
request.Method = "GET"
request.AllowAutoRedirect = True
Using response As HttpWebResponse = request.GetResponse
response.Close()
code = response.StatusCode
End Using
Catch ex As Exception
code = HttpStatusCode.InternalServerError
End Try
Return Content(code, "text/plain")
End Function
,我得到了预期的404返回值。但是,如果我使用我的应用程序通过ajax调用调用mvc路由,我会得到200。如果我将请求对象的AllowAutoRedirect设置为false,则得到302。我从来没有得到过404。我正在通过Firebug再次验证这一点。有人能指出我做错了什么吗
谢谢 如果您使用FaceBook,请确保您设置了用户代理,否则网站会将您重定向到一个标准HTML页面,解释您这样做的原因(因此200状态码):
此外,当HttpWebRequest返回的状态代码不同于200时,将引发异常,更具体地说,是一个异常。因此,您需要将其捕获,并在包含的属性中找到404状态码
此外,我可能会使用一个简化代码:
Public Function ValidateUrlStatusCode(url As String) As ActionResult
Dim code = 0
Try
Using client = New WebClient()
client.Headers(HttpRequestHeader.UserAgent) = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0"
Dim response = client.DownloadString(url)
End Using
Catch ex As WebException
Dim httpResponse = TryCast(ex.Response, HttpWebResponse)
If httpResponse IsNot Nothing Then
code = CInt(httpResponse.StatusCode)
End If
End Try
Return Content(code.ToString(), "text/plain")
End Function
关于客户:
<script type="text/javascript">
$.ajax({
url: '@Url.Action("ValidateUrlStatusCode")',
type: 'POST',
data: { url: 'http://www.facebook.com/blah.html' },
success: function (result) {
alert(result);
}
});
</script>
$.ajax({
url:'@url.Action(“ValidateUrlStatusCode”),
键入:“POST”,
数据:{url:'http://www.facebook.com/blah.html' },
成功:功能(结果){
警报(结果);
}
});
<script type="text/javascript">
$.ajax({
url: '@Url.Action("ValidateUrlStatusCode")',
type: 'POST',
data: { url: 'http://www.facebook.com/blah.html' },
success: function (result) {
alert(result);
}
});
</script>