request乱码指的是：浏览器向服务器发送的请求参数中包含中文字符，服务器获取到的请求参数的值是乱码；
response乱码指的是：服务器向浏览器发送的数据包含中文字符，浏览器中显示的是乱码； 乱码产生的原因：不管是request乱码还是response乱码，其实都是由于客户端（浏览器）跟服务器端采用的编码格式不一致造成的。 以request乱码为例：浏览器向服务器发送请求，因为浏览器与服务器之间的通信实质上是socket流，所以要先将请求参数（字符）转换成字节，也就是编码过程，服务器接收到请求参数后进行解码（字节转字符），然后封装到request对象中。如果客户端的编码与服务器端的解码不统一，就会导致通过request获取到的请求参数的值是乱码。 //GET请求 public static String HttpGetUrl(String url)
{ string strReturn = string.Empty; String urlEsc = url; HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(urlEsc); req.Method = “GET”; try { using (WebResponse wr = req.GetResponse()) { Stream stream = wr.GetResponseStream(); byte[] buf = new byte[1024]; while (true) { int len = stream.Read(buf, 0, buf.Length); if (len <= 0)//len <= 0 跳出循环 break; strReturn += System.Text.Encoding.GetEncoding(“utf-8”).GetString(buf, 0, len);//指定编码格式 } } } catch (Exception ex) { throw ex; } return strReturn; } //POST请求 public static String HttpPostData(String url, String data) { string strReturn = string.Empty; byte[] byteData = Encoding.UTF8.GetBytes(data); //在转换字节时指定编码格式 HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url); req.Method = “POST”; req.ContentType = “application/x-www-form-urlencoded”; req.ContentLength = byteData.Length; try { using (Stream reqStream = req.GetRequestStream()) { reqStream.Write(byteData, 0, byteData.Length);//发送数据 } //get reponse data and parse
using (WebResponse response = httpWebReq.GetResponse())
{ //解决乱码：utf-8 + streamreader.readtoend
StreamReader reader = new StreamReader(response.GetResponseStream() , Encoding.GetEncoding(“utf-8”));
strReturn = reader.ReadToEnd();
reader.Close();
reader.Dispose();
} } catch (Exception ex) { throw ex; } return strReturn; }
