通过HtppWebRequest发送图片到服务器并保存

之前写的楼主没有测试，后来发现用起来有点小问题 就修改了一下，现在已经亲测可用 完全没有问题了  下面就开始贴代码了

首先将图片装换成功byte 数组

这个path是图片的路径  例如d:12.png;

        public byte[] SaveImage(string path)
        {
            FileStream fs=new  FileStream(path,FileMode.Open,FileAccess.Read);   
            BinaryReader br=new BinaryReader(fs);
            byte[] imgBytes = br.ReadBytes((int) fs.Length);
            return imgBytes;
        }    

然后上传图片流

这里要注意点 写入请求流的strean 用完要关闭

        /// <summary>
        /// 上传图片流
        /// </summary>
        /// <param name="data"></param>
        private bool ImageRequest(byte[] data)
        {
            const string host = "http://www.baidu.com"; 
            const string path = "/ImageManagerApi/GetImageByte";
            string url = host + path;
            HttpWebResponse httpResponse = null;
            HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(url);
            httpRequest.Method = "POST";
            httpRequest.Headers.Add("FileSize", data.Length.ToString());
            using (Stream stream = httpRequest.GetRequestStream())
            {
                stream.Write(data, 0, data.Length);
                stream.Close();
            }
            try
            {
                httpResponse = (HttpWebResponse)httpRequest.GetResponse();
            }
            catch (WebException ex)
            {

                httpResponse = (HttpWebResponse)ex.Response;
            }
            //响应流
            Stream st = httpResponse.GetResponseStream();
            StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
            string result = reader.ReadToEnd();
            if ("ok".Contains(result))
                return true;
            return false;
        }

服务器接收的方法 

        /// <summary>
        /// 获取图片流
        /// 保存图片
        /// </summary>
        public void GetImageByte()
        {
            try
            {
                int fileSize = int.Parse(Request.Headers["FileSize"].ToString());
                byte[] data = Request.BinaryRead(fileSize);
                DebugHelper.Info(BitConverter.ToString(data));
                var path = "/Upload/LINGDAO/" + DateTime.Now.Date.ToString("yyyy-MM-dd") + "/";
                var serverPath = Server.MapPath("~" + path);
                if (!Directory.Exists(serverPath))
                {
                    Directory.CreateDirectory(serverPath);
                }
                string fileName = Guid.NewGuid().ToString();
                //图片存储到流中

                MemoryStream ms = new MemoryStream(data);
                Image image = Image.FromStream(ms);
                image.Save(serverPath + fileName + ".png");

                Response.HeaderEncoding = Encoding.UTF8;
                Response.Charset = "utf-8";
                Response.Write("ok");
            }
            catch (Exception e)
            {
                DebugHelper.Info(e.Message);
                Response.HeaderEncoding = Encoding.UTF8;
                Response.Charset = "utf-8";
                Response.Write("error");
            }
        }

好了 大功告成!