使用URL重写和404.aspx时的回发问题 [英] Postback problem when using URL Rewrite and 404.aspx

问题描述

我在网站上使用URL重写来获取如下URL:
http://mysite.com/users/john
代替
http://mysite.com/index.aspx?user=john

要使用IIS6实现这种无扩展名的重写，并且不能访问托管服务器，我使用"404方法".当服务器找不到请求时，将执行映射的404页，因为这是一个aspx页，所以可以执行重写(我可以使用托管服务上的控制面板设置404映射). /p>

这是Global.asax中的代码:

protected void Application_BeginRequest(object sender, EventArgs e)
{
    string url = HttpContext.Current.Request.Url.AbsolutePath;
    if (url.Contains("404.aspx"))
    {
        string[] urlInfo404 = Request.Url.Query.ToString().Split(';');
        if (urlInfo404.Length > 1)
        {
            string requestURL = urlInfo404[1];
            if (requestURL.Contains("/users/"))
            {
                HttpContext.Current.RewritePath("~/index.aspx?user=" + GetPageID(requestURL));              
                StoreRequestURL(requestURL);
            }
            else if (requestURL.Contains("/picture/"))
            {
                HttpContext.Current.RewritePath("~/showPicture.aspx?pictureID=" + GetPageID(requestURL));
                StoreRequestURL(requestURL);
            }
        }
    }
}

private void StoreRequestURL(string url)
{
    url = url.Replace("http://", "");
    url = url.Substring(url.IndexOf("/"));
    HttpContext.Current.Items["VirtualUrl"] = url;
}

private string GetPageID(string requestURL)
{
    int idx = requestURL.LastIndexOf("/");
    string id = requestURL.Substring(idx + 1);
    id = id.Replace(".aspx", ""); //Only needed when testing without the 404-approach
    return id;
}

然后，在我的母版页的Page_Load中，我在form-tag的action-attribute中设置了正确的URL.

protected void Page_Load(object sender, EventArgs e)
{
    string virtualURL = (string)HttpContext.Current.Items["VirtualUrl"];
    if (!String.IsNullOrEmpty(virtualURL))
    {
        form1.Action = virtualURL;
    }
}

重写工作正常，但是当我在页面上执行回发时，未执行回发，可以通过某种方式解决此问题吗?

问题似乎出在404方法上，因为当我尝试不使用它时(并且失去了无扩展功能)，回发有效.那是我要求的时间:
http://mysite.com/users/john.aspx

这是否可以解决，或者是否有其他满足我要求的解决方案(IIS6，没有serveraccess/ISAPI过滤器和无扩展名).

解决方案

form1.Action = Request.RawUrl

结合

HttpContext.Current.RewritePath("/Default.aspx", true); 

对我来说很好.

设置表单Action属性是我所缺少的部分...

感谢您的解决方案！

I'm using URL rewrite on my site to get URLs like:
http://mysite.com/users/john
instead of
http://mysite.com/index.aspx?user=john

To achive this extensionless rewrite with IIS6 and no access to the hosting-server I use the "404-approach". When a request that the server can't find, the mapped 404-page is executed, since this is a aspx-page the rewrite can be performed (I can setup the 404-mapping using the controlpanel on the hosting-service).

This is the code in Global.asax:

protected void Application_BeginRequest(object sender, EventArgs e)
{
    string url = HttpContext.Current.Request.Url.AbsolutePath;
    if (url.Contains("404.aspx"))
    {
        string[] urlInfo404 = Request.Url.Query.ToString().Split(';');
        if (urlInfo404.Length > 1)
        {
            string requestURL = urlInfo404[1];
            if (requestURL.Contains("/users/"))
            {
                HttpContext.Current.RewritePath("~/index.aspx?user=" + GetPageID(requestURL));              
                StoreRequestURL(requestURL);
            }
            else if (requestURL.Contains("/picture/"))
            {
                HttpContext.Current.RewritePath("~/showPicture.aspx?pictureID=" + GetPageID(requestURL));
                StoreRequestURL(requestURL);
            }
        }
    }
}

private void StoreRequestURL(string url)
{
    url = url.Replace("http://", "");
    url = url.Substring(url.IndexOf("/"));
    HttpContext.Current.Items["VirtualUrl"] = url;
}

private string GetPageID(string requestURL)
{
    int idx = requestURL.LastIndexOf("/");
    string id = requestURL.Substring(idx + 1);
    id = id.Replace(".aspx", ""); //Only needed when testing without the 404-approach
    return id;
}

And in Page_Load on my masterpage I set the correct URL in the action-attribute on the form-tag.

protected void Page_Load(object sender, EventArgs e)
{
    string virtualURL = (string)HttpContext.Current.Items["VirtualUrl"];
    if (!String.IsNullOrEmpty(virtualURL))
    {
        form1.Action = virtualURL;
    }
}

The rewrite works fine but when I perform a postback on the page the postback isn't executed, can this be solved somehow?

The problem seems to be with the 404-approach because when I try without it (and loses the extensionless-feature) the postback works. That is when I request:
http://mysite.com/users/john.aspx

Can this be solved or is there any other solution that fulfil my requirements (IIS6, no serveraccess/ISAPI-filter and extensionless).

解决方案

form1.Action = Request.RawUrl

in combination with

HttpContext.Current.RewritePath("/Default.aspx", true); 

works very well for me.

setting the form Action attribute was the piece i was missing...

Thanks for the solution!!!

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