winform客户端+java后台

 客户端用winform写的  后台用JAVA  有点麻烦

    不过我们一步一步来

    目前用的是http传数据  c#只能转化为字节  这个慢慢写 后面再加 

    这篇写了挺久了  一直有其他事情

c# 客户端 发送请求 得到响应

    public class WebClient
    {
        Encoding encoding = Encoding.UTF8; //Encoding.Default;
        string respHtml = "";
        WebProxy proxy;
        static CookieContainer cc;
        WebHeaderCollection requestHeaders;
        WebHeaderCollection responseHeaders;
        int bufferSize = 15240;
        public event EventHandler<UploadEventArgs> UploadProgressChanged;
        public event EventHandler<DownloadEventArgs> DownloadProgressChanged;
        static WebClient()
        {
            LoadCookiesFromDisk();
        }
        /// <summary>    
        /// 创建WebClient的实例    
        /// </summary>    
        public WebClient()
        {
            requestHeaders = new WebHeaderCollection();
            responseHeaders = new WebHeaderCollection();
        }
        /// <summary>    
        /// 设置发送和接收的数据缓冲大小    
        /// </summary>    
        public int BufferSize
        {
            get { return bufferSize; }
            set { bufferSize = value; }
        }
        /// <summary>    
        /// 获取响应头集合    
        /// </summary>    
        public WebHeaderCollection ResponseHeaders
        {
            get { return responseHeaders; }
        }
        /// <summary>    
        /// 获取请求头集合    
        /// </summary>    
        public WebHeaderCollection RequestHeaders
        {
            get { return requestHeaders; }
        }
        /// <summary>    
        /// 获取或设置代理    
        /// </summary>    
        public WebProxy Proxy
        {
            get { return proxy; }
            set { proxy = value; }
        }
        /// <summary>    
        /// 获取或设置请求与响应的文本编码方式    
        /// </summary>    
        public Encoding Encoding
        {
            get { return encoding; }
            set { encoding = value; }
        }
        /// <summary>    
        /// 获取或设置响应的html代码    
        /// </summary>    
        public string RespHtml
        {
            get { return respHtml; }
            set { respHtml = value; }
        }
        /// <summary>    
        /// 获取或设置与请求关联的Cookie容器    
        /// </summary>    
        public CookieContainer CookieContainer
        {
            get { return cc; }
            set { cc = value; }
        }
        /// <summary>    
        ///  获取网页源代码    
        /// </summary>    
        /// <param name="url">网址</param>    
        /// <returns></returns>    
        public string GetHtml(string url)
        {
            HttpWebRequest request = CreateRequest(url, "GET");
            respHtml = encoding.GetString(GetData(request));
            return respHtml;
        }
        /// <summary>    
        /// 下载文件    
        /// </summary>    
        /// <param name="url">文件URL地址</param>    
        /// <param name="filename">文件保存完整路径</param>    
        public void DownloadFile(string url, string filename)
        {
            FileStream fs = null;
            try
            {
                HttpWebRequest request = CreateRequest(url, "GET");
                byte[] data = GetData(request);
                fs = new FileStream(filename, FileMode.Create, FileAccess.Write);
                fs.Write(data, 0, data.Length);
            }
            finally
            {
                if (fs != null) fs.Close();
            }
        }
        /// <summary>    
        /// 从指定URL下载数据    
        /// </summary>    
        /// <param name="url">网址</param>    
        /// <returns></returns>    
        public byte[] GetData(string url)
        {
            HttpWebRequest request = CreateRequest(url, "GET");
            return GetData(request);
        }
        /// <summary>    
        /// 向指定URL发送文本数据    
        /// </summary>    
        /// <param name="url">网址</param>    
        /// <param name="postData">urlencode编码的文本数据</param>    
        /// <returns></returns>    
        public string Post(string url, string postData)
        {
            byte[] data = encoding.GetBytes(postData);     
            return Post(url, data);
        }

        //public string Post(string url, string postData,bool a) {
        //    HttpWebRequest request = CreateRequest(url, "POST");

        //   //postData= HttpUtility.UrlEncode(postData,encoding);
        //    request.ContentType = "application/x-www-form-urlencoded";
        //    request.ContentLength = postData.Length;
        //    request.KeepAlive = true;
        //    StreamWriter myWriter = null;
        //    myWriter = new StreamWriter(request.GetRequestStream());
        //    myWriter.Write(postData);
        //    respHtml = encoding.GetString(GetData(request));
        //    return respHtml;

        //}

        /// <summary>    
        /// 向指定URL发送字节数据    
        /// </summary>    
        /// <param name="url">网址</param>    
        /// <param name="postData">发送的字节数组</param>    
        /// <returns></returns>    
        public string Post(string url, byte[] postData)
        {
            HttpWebRequest request = CreateRequest(url, "POST");
            //var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");

            request.ContentType = "application/x-www-form-urlencoded ";// ;charset=UTF8";
            request.ContentLength = postData.Length;
            request.KeepAlive = true;
            PostData(request, postData);
            respHtml = encoding.GetString(GetData(request));
            return respHtml;
        }
        /// <summary>    
        /// 向指定网址发送mulitpart编码的数据    
        /// </summary>    
        /// <param name="url">网址</param>    
        /// <param name="mulitpartForm">mulitpart form data</param>    
        /// <returns></returns>    
        //public string Post(string url, MultipartForm mulitpartForm)
        //{
        //    HttpWebRequest request = CreateRequest(url, "POST");
        //    request.ContentType = mulitpartForm.ContentType;
        //    request.ContentLength = mulitpartForm.FormData.Length;
        //    request.KeepAlive = true;
        //    PostData(request, mulitpartForm.FormData);
        //    respHtml = encoding.GetString(GetData(request));
        //    return respHtml;
        //}
        
        /// <summary>    
        /// 读取请求返回的数据    
        /// </summary>    
        /// <param name="request">请求对象</param>    
        /// <returns></returns>    
        public byte[] GetData(HttpWebRequest request)
        {
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream stream = response.GetResponseStream();
            responseHeaders = response.Headers;
            //SaveCookiesToDisk();

            DownloadEventArgs args = new DownloadEventArgs();
            if (responseHeaders[HttpResponseHeader.ContentLength] != null)
                args.TotalBytes = Convert.ToInt32(responseHeaders[HttpResponseHeader.ContentLength]);

            MemoryStream ms = new MemoryStream();
            int count = 0;
            byte[] buf = new byte[bufferSize];
            while ((count = stream.Read(buf, 0, buf.Length)) > 0)
            {
                ms.Write(buf, 0, count);
                if (this.DownloadProgressChanged != null)
                {
                    args.BytesReceived += count;
                    args.ReceivedData = new byte[count];
                    Array.Copy(buf, args.ReceivedData, count);
                    this.DownloadProgressChanged(this, args);
                }
            }
            stream.Close();
            //解压    
            if (ResponseHeaders[HttpResponseHeader.ContentEncoding] != null)
            {
                MemoryStream msTemp = new MemoryStream();
                count = 0;
                buf = new byte[100];
                switch (ResponseHeaders[HttpResponseHeader.ContentEncoding].ToLower())
                {
                    case "gzip":
                        GZipStream gzip = new GZipStream(ms, CompressionMode.Decompress);
                        while ((count = gzip.Read(buf, 0, buf.Length)) > 0)
                        {
                            msTemp.Write(buf, 0, count);
                        }
                        return msTemp.ToArray();
                    case "deflate":
                        DeflateStream deflate = new DeflateStream(ms, CompressionMode.Decompress);
                        while ((count = deflate.Read(buf, 0, buf.Length)) > 0)
                        {
                            msTemp.Write(buf, 0, count);
                        }
                        return msTemp.ToArray();
                    default:
                        break;
                }
            }
            return ms.ToArray();
        }
        /// <summary>    
        /// 发送请求数据    
        /// </summary>    
        /// <param name="request">请求对象</param>    
        /// <param name="postData">请求发送的字节数组</param>    
        private void PostData(HttpWebRequest request, byte[] postData)
        {
            int offset = 0;
            int sendBufferSize = bufferSize;
            int remainBytes = 0;
            Stream stream = request.GetRequestStream();
            StreamWriter mysw = new StreamWriter(stream);//, encoding);//Encoding.GetEncoding("utf-8"));
            //Console.WriteLine("请求编码StreamWriter--------------->" + mysw.Encoding);
            UploadEventArgs args = new UploadEventArgs();
            args.TotalBytes = postData.Length;
            //Console.WriteLine("请求编码request.TransferEncoding--------------->" + request.TransferEncoding);
            while ((remainBytes = postData.Length - offset) > 0)
            {
                if (sendBufferSize > remainBytes) sendBufferSize = remainBytes;
                stream.Write(postData, offset, sendBufferSize);
                offset += sendBufferSize;
                if (this.UploadProgressChanged != null)
                {
                    args.BytesSent = offset;
                    this.UploadProgressChanged(this, args);
                }
            }
            stream.Close();
        }

        /// <summary>    
        /// 发送请求数据    
        /// </summary>    
        /// <param name="request">请求对象</param>    
        /// <param name="postData">请求发送的字节数组</param>    
        private void PostData(HttpWebRequest request, string postData)
        {
             Stream stream = request.GetRequestStream();
            StreamWriter mysw = new StreamWriter(stream, Encoding.GetEncoding("utf-8"));
            mysw.Write(postData);
            stream.Close();
        }
        /// <summary>    
        /// 创建HTTP请求    
        /// </summary>    
        /// <param name="url">URL地址</param>    
        /// <returns></returns>    
        private HttpWebRequest CreateRequest(string url, string method)
        {
            Uri uri = new Uri(url);

            if (uri.Scheme == "https")
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(this.CheckValidationResult);

            // Set a default policy level for the "http:" and "https" schemes.    
            HttpRequestCachePolicy policy = new HttpRequestCachePolicy(HttpRequestCacheLevel.Revalidate);
            HttpWebRequest.DefaultCachePolicy = policy;

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
            request.AllowAutoRedirect = false;
            request.AllowWriteStreamBuffering = false;
            request.Method = method;
            if (proxy != null) 
                request.Proxy = proxy;
            request.CookieContainer = cc;
            foreach (string key in requestHeaders.Keys)
            {
                request.Headers.Add(key, requestHeaders[key]);
            }
            requestHeaders.Clear();
            return request;
        }
        private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true;
        }
        /// <summary>    
        /// 将Cookie保存到磁盘    
        /// </summary>    
        private static void SaveCookiesToDisk()
        {
            string cookieFile = System.Environment.GetFolderPath(Environment.SpecialFolder.Cookies) + "\webclient.cookie";
            FileStream fs = null;
            try
            {
                fs = new FileStream(cookieFile, FileMode.Create);
                System.Runtime.Serialization.Formatters.Binary.BinaryFormatter formater = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
                formater.Serialize(fs, cc);
            }
            finally
            {
                if (fs != null) fs.Close();
            }
        }
        /// <summary>    
        /// 从磁盘加载Cookie    
        /// </summary>    
        private static void LoadCookiesFromDisk()
        {
            cc = new CookieContainer();
            string cookieFile = System.Environment.GetFolderPath(Environment.SpecialFolder.Cookies) + "\webclient.cookie";
            if (!File.Exists(cookieFile))
                return;
            FileStream fs = null;
            try
            {
                fs = new FileStream(cookieFile, FileMode.Open, FileAccess.Read, FileShare.Read);
                System.Runtime.Serialization.Formatters.Binary.BinaryFormatter formater = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
                cc = (CookieContainer)formater.Deserialize(fs);
            }
            finally
            {
                if (fs != null) fs.Close();
            }
        }
    }

Json解析数据

添加NuGet程序包  Newtonsoft.Json

添加引用

using Newtonsoft.Json;

 List<User> userSettings = JsonConvert.DeserializeObject<List<User>>(personalSettings.data.ToString());

上传文件

    文件转字节

 private byte[] FileContent(string fileName)
        {
            FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
            try
            {
                byte[] buffur = new byte[fs.Length];
                fs.Read(buffur, 0, (int)fs.Length);

                return buffur;
            }
            catch (Exception ex)
            {
                throw ex;
           
            }
            finally
            {
                if (fs != null)
                {

                    //关闭资源  
                    fs.Close();
                }
            }
        }

把字节转Base64字符串  拼接URL

 "userId=" + users.UserID + "&configurationFile=" + System.Web.HttpUtility.UrlEncode(Convert.ToBase64String(filebyte)) + "&configurationFileName=myAntoCAD.exe.zip" 

下载

 public static string DwgDownload(this string url,string path) {
            using (WebClient wc = new WebClient()) {

                string bdparh;
                try
                {
                     bdparh = Path.Combine(path,Path.GetFileName(url));
                    wc.DownloadFile(new Uri(url), bdparh);
                    return bdparh;
                }
                catch {
                    MessageBox.Show("图块不存在！");

                }
                return "";
            }

        }