HttpWebRequest post参数问题

[xiaowen_ly]

我用HttpWebRequest请求链接，post参数过不去，帮忙看下问题所在。

       HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.KeepAlive = false;
            req.Method = "POST";
            req.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
            req.Credentials = CredentialCache.DefaultCredentials;
            req.ContentType = "application/x-form-www-urlencoded";
            Encoding encode = new UTF8Encoding();

            byte[] b = encode.GetBytes(string.Format("Content={0}&Type={1}&StartDate={2}&EndDate={3}", content, columnname.ToLower() == "macaddress" ? 1 : 0, DateTime.Now.AddDays(-1).Date.ToString("yyyy-MM-dd 00:00:00"), DateTime.Now.Date.ToString("yyyy-MM-dd 00:00:00")));
            req.ContentLength = b.Length;
            using (Stream stream = req.GetRequestStream())
            {
                stream.Write(b, 0, b.Length);
            }

            WebResponse res = req.GetResponse();
            StreamReader sr = new StreamReader(res.GetResponseStream(), encode);
            string result = sr.ReadToEnd();
            res.Close();
            sr.Close();

其中content参数是用英文逗号分隔的mac地址，如：14:5A:05:56:F5:A8,0C:74:C2:8B:F8:AA,CC:08:E0:8C:16:BC,0C:77:1A:6E:66:FE，长度是1500个mac逗号分隔。
我看资料，很多都是给GetRequestStream() write参数的，我这样参数没post过去.第三方联调过，却是是没传过去参数。
在线等解答，谢谢

[xiaowen_ly]

我写了一个程序部署在本地,然后HttpWebRequest post请求本地部署的页面,在vs里调试本地部署的网站,结果请求的时候调试信息表明,根本就没有post过去参数.

现在修改成以下代码,可以正确获取参数:

HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.KeepAlive = false;
            req.Method = "POST";
            req.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
            req.Credentials = CredentialCache.DefaultCredentials;
            Encoding encode = new UTF8Encoding();
            using (Stream stream = req.GetRequestStream())
            {
                Dictionary<string, string> nvc = new Dictionary<string, string>();
                nvc.Add("Content", HttpUtility.UrlEncode(content, encode));
                nvc.Add("Type", "1");
                nvc.Add("StartDate", DateTime.Now.AddDays(-1).Date.ToString("yyyy-MM-dd 00:00:00"));
                nvc.Add("EndDate", DateTime.Now.Date.ToString("yyyy-MM-dd 00:00:00"));
                string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
                byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
                req.ContentType = "multipart/form-data; boundary=" + boundary;
                string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
                foreach (string key in nvc.Keys)
                {
                    stream.Write(boundarybytes, 0, boundarybytes.Length);
                    string formitem = string.Format(formdataTemplate, key, nvc[key]);
                    byte[] formitembytes = encode.GetBytes(formitem);
                    stream.Write(formitembytes, 0, formitembytes.Length);
                }
                stream.Write(boundarybytes, 0, boundarybytes.Length);
                byte[] trailer = Encoding.ASCII.GetBytes("\r\nContent-Type: application/x-form-www-urlencoded\r\n\r\n\r\n--" + boundary + "--\r\n");
                stream.Write(trailer, 0, trailer.Length);
            }

            WebResponse res = req.GetResponse();
            StreamReader sr = new StreamReader(res.GetResponseStream(), encode);
            string result = sr.ReadToEnd();

供大家参考.

[机器人]

content 加上 HttpUtility.UrlEncode()

[bdmh]

编一下码，接收方解码

[xiaowen_ly]

我先试试

[xiaowen_ly]

byte[] b = encode.GetBytes(string.Format("Content={0}&Type={1}&StartDate={2}&EndDate={3}", HttpUtility.UrlEncode(content,encode), columnname.ToLower() == "macaddress" ? 1 : 0, DateTime.Now.AddDays(-1).Date.ToString("yyyy-MM-dd 00:00:00"), DateTime.Now.Date.ToString("yyyy-MM-dd 00:00:00")));
之后还是不行。我是utf-8，对方也是utf-8接受

[Chyan]

接收方Server.UrlDecode()一下

[「已注销」]

哈哈，xiaowen_ly果然是大神，帮我也解决了

[cndidai]

确实是大神级别，膜拜中