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向post请求中写入数据，最终保存在了HttpWebRequest.Params中

2024-11-18 11:41:39   202人阅读

　一、向post请求中写入数据，最终保存在了HttpWebRequest.Params中：

　　1）如果存入的是IDictionary类型的字符串变量，如：“username=administrator”，则key=value；

　　2）如果写入的是string类型的变量,如"username"，则key=null，value=http://www.mamicode.com/username；

 　　　　protected void btnLogin_Click(object sender, EventArgs e)        {                        string Url = "http://localhost:18472/DataRequest.aspx";            string contentType = "application/x-www-form-urlencoded";            string username = "administrator";            string password = "admin";            IDictionary<string,string> param=new Dictionary<string,string>();            param.Add("username",username);            param.Add("password",password);            int i = 0;            StringBuilder sb=new StringBuilder();            foreach (var key in param.Keys)            {                if (i>0)                {                    sb.AppendFormat("&{0}={1}", key, param[key]);                }                else                {                    sb.AppendFormat("{0}={1}", key, param[key]);                }                i++;            }            //string content = SendPost(sb.ToString(),Url,contentType);            string content = SendPost(username,Url,contentType);        }        /// <summary>        ///         /// </summary>        /// <param name="data">写入流中的数据，最后将保存在request.params中，是Idictionary类型的变量；如果是没有等号的string类型，key=null，value=http://www.mamicode.com/string</param>        /// <param name="url">请求的url</param>        /// <param name="contentType">请求的内容类型</param>        /// <returns></returns>        public static string SendPost(string data, string url, string contentType)        {            string content = string.Empty;            HttpWebRequest httpWebRequest = WebRequest.Create(url) as HttpWebRequest;            httpWebRequest.AllowAutoRedirect = true;            httpWebRequest.Method = "POST";            httpWebRequest.ContentType = contentType;            using (StreamWriter sw = new StreamWriter(httpWebRequest.GetRequestStream()))            {                sw.Write(data);            }            HttpWebResponse httpWebResponse = httpWebRequest.GetResponse() as HttpWebResponse;            using (StreamReader sr = new StreamReader(httpWebResponse.GetResponseStream(), System.Text.Encoding.Default))            {                content = sr.ReadToEnd();            }            //httpWebRequest.EndGetResponse;            return content;        }

 二、从request中取出写入的data数据（比如：xml等）的另一种方法：从流中获取（仅一次）

       string content="";　　　　using (Stream stream = HttpContext.Current.Request.InputStream)       {           using (StreamReader sr = new StreamReader(stream, Encoding.UTF8))           {                content=sr.ReadToEnd();           }       }

三、实现数据在IHttpModule和IHttpHandler之间（process项目和web项目之间）数据的组织和共享的键/值集合,保存在context.Items中

string XML=content;
HttpContext context=HttpContext.Current;
context.Items.Add("XML", XML); 

四、从Items集合中取出数据

string XML=context.Items["XML"].ToString();

 

向post请求中写入数据，最终保存在了HttpWebRequest.Params中


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