【整理】Asp.net HttpWebRequest和HttpWebResponse发送和接受任何类型数据
发送数据
//当前页面地址
string currentUrl = Request.Url.ToString();
string fileName = "复制文件";
string url = currentUrl.Substring(0, currentUrl.LastIndexOf(‘/‘)) + "/Default2.aspx?id=" + fileName; //发送到的页面的地址
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
//读取一个文件
FileStream fs = new FileStream(Server.MapPath("程序更新说明书.doc"), System.IO.FileMode.Open, System.IO.FileAccess.Read);
byte[] filecontent = new byte[fs.Length];
fs.Read(filecontent, 0, filecontent.Length);
fs.Close();
fs.Dispose();
//将图片转换成base64编码的流
string a = Convert.ToBase64String(filecontent);
//读取base64编码流，发送
byte[] requestBytes = System.Text.Encoding.Default.GetBytes(a);
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
req.ContentLength = requestBytes.Length;
Stream requestStream = req.GetRequestStream();
requestStream.Write(requestBytes, 0, requestBytes.Length);
requestStream.Close();
//接收返回参数，到string backstr
HttpWebResponse res = (HttpWebResponse)req.GetResponse();
StreamReader sr = new StreamReader(res.GetResponseStream(), System.Text.Encoding.Default);
string backstr = sr.ReadToEnd();
sr.Close();
res.Close();
//输出参数
Response.Write(backstr);
接受数据
//接收到的参数
string bb = Request.QueryString["id"];
Encoding myEncoding = Encoding.GetEncoding("utf-8");
//接收传递过来的数据流
Stream resStream = Request.InputStream;
byte[] filecontent = new byte[resStream.Length];
//将数据流读入byte数组
resStream.Read(filecontent, 0, filecontent.Length);
//数组转换为string以便转换base64使用
string a = myEncoding.GetString(filecontent);
//将string读取base64解密到byte数组
byte[] filecontent2 = Convert.FromBase64String(a);
//写入目录
File.WriteAllBytes(Server.MapPath(bb + ".doc"), filecontent2);
//返回值
Response.Write("ok");
Response.End();