C#模拟客户端发送数据示例

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            request.ContentLength = bytes.Length;
            using (Stream stream = request.GetRequestStream())
            {
                stream.Write(bytes, 0, bytes.Length);
            }
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader stream = new StreamReader(response.GetResponseStream(), encoding))
            {
                return stream.ReadToEnd();
            }
        }
    }
}

2).服务器端接收文本

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using (StreamReader stream = new StreamReader(Request.InputStream))
{
    str = stream.ReadToEnd();
}

说明：只需增加request.ContentType = "application/x-www-form-urlencoded"，并将文本格式改为"data=木子屋"，服务器端即可用Request.Form["data"]接收。

2.上传文件

1).客户端上传文件

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            using (Stream stream = request.GetRequestStream())
            {
                using (FileStream fileStream = new FileStream(file, FileMode.Open, FileAccess.Read))
                {
                    byte[] buffer = new byte[4096];
                    int bytesRead = 0;
                    while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
                    {
                        stream.Write(buffer, 0, bytesRead);
                    }
                }
            }
            //2.HttpWebResponse
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader stream = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
            {
                return stream.ReadToEnd();
            }
        }
    }
}

2).服务器端接收文件

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{
    using (BinaryReader stream = new BinaryReader(Request.InputStream))
    {
        byte[] buffer = new byte[4096];
        int bytesRead = 0;
        while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) != 0)
        {
            file.Write(buffer, 0, bytesRead);
        }
    }
}