HttpWebRequest/HttpWebResponse Base 64问题 [英] HttpWebRequest / HttpWebResponse Base 64 problem

问题描述

我正在尝试发布到url，以生成页面.该网址是在我的应用程序中的其他位置指定的，并且源自银行.

I'm trying to post to a url, in order to generate a page. The url is specified elsewhere in my application, and originates from a bank.

我需要指定的参数是:Pareq-这是一个长字符串，在我的应用程序的其他地方指定TermUrl-银行用于发回(我的应用程序)的URLMD-一些随机的字符串来标识顺序.

The parameters i need to specify are: Pareq - this is a long string, specified elsewhere in my application TermUrl - a url the bank uses to post back to (my application) MD - some random string to identify the order.

此处的相关参数是pareq-

The relevant parameter here is the pareq -

我在页面上有下面的代码，最后有Response.Write(response)，以根据请求创建页面.但是，我收到了从发布到url-的错误消息PaReq消息未基于64位编码.

I have the below code on the page, and Response.Write(response) at the end, to create a page from the request. However, i am getting an error returned from the posted to url- PaReq message not based64 encoded.

从我的代码中，您可以看到我已尝试对它进行64位编码，但是在某些地方我出了错....

From my code, you can see i've tried to base 64 encode it, but somewhere i'm going wrong....

                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(acsUrl);

            byte[] toEncodeAsBytes  = System.Text.ASCIIEncoding.ASCII.GetBytes(pareq);

            string data = String.Format("PaReq={0}&TermUrl={1}&MD={2}", System.Convert.ToBase64String(toEncodeAsBytes), "www.return.com", "wsdfskdjglke");
            byte[] buffer = Encoding.UTF8.GetBytes(data);

            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            req.ContentLength = buffer.Length;
            req.CookieContainer = new CookieContainer(); // enable cookies

            Stream reqst = req.GetRequestStream(); // add form data to request stream
            reqst.Write(buffer, 0, buffer.Length);
            reqst.Flush();
            reqst.Close();

            HttpWebResponse res = (HttpWebResponse)req.GetResponse();

            Stream resst = res.GetResponseStream();
            StreamReader sr = new StreamReader(resst);
            string response = sr.ReadToEnd();

推荐答案

在与字符串连接之前，需要对Base64字符串进行编码(使用Server.Encode).

You need to encode (using Server.Encode) your Base64 string before you concat it with your string.

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