c# - C# - 如何从我的 Java 应用程序接收文件名和文件

Question

我对 Java 和 C# 很陌生。我有一个使用 TCP 套接字将文件名和文件发送到 C# 客户端的 java 应用程序。我收到数据，但写入时已损坏。我不知道如何先读取文件名，然后将其余数据写入文件。

我已经编写了代码，如果我只是从我的 java 应用程序发送文件，我会成功地在我的 C# 应用程序上接收它并成功编写它。这 100% 有效。现在我想发送名称和文件。

发送数据的 Java 代码：

try {
            System.out.println("Connecting...");

            File file = new File(Environment.getExternalStorageDirectory(), backup_folder);
            File[] Files = file.listFiles();

            OutputStream os = m_socket.getOutputStream();
            DataOutputStream dos = new DataOutputStream(os);

            dos.writeInt(Files.length);

            for (int count = 0; count < Files.length; count++) {
                dos.writeUTF(Files[count].getName());

            }

            for (int count = 0; count < Files.length; count++) {

                int filesize = (int) Files[count].length();
                dos.writeInt(filesize);
            }

            for (int count = 0; count < Files.length; count++) {

                int filesize = (int) Files[count].length();
                byte[] buffer = new byte[filesize];

                FileInputStream fis = new FileInputStream(Files[count].toString());
                BufferedInputStream bis = new BufferedInputStream(fis);

                //Sending file name and file size to the server
                bis.read(buffer, 0, buffer.length); //This line is important
                dos.write(buffer, 0, buffer.length);
                dos.flush();

                //close socket connection
                //socket.close();
            }
            m_socket.close();
        } catch (Exception e) {
            System.out.println("Error::" + e);
            //System.out.println(e.getMessage());
            //e.printStackTrace();
            //Log.i("******* :( ", "UnknownHostException");
        }
    }

C# 代码（这是我遇到问题的地方）

private void WaitConnection()
        {
            toolStripStatusLabel2.Visible = true;
            toolStripStatusLabel1.Visible = false;

            while (true){
                m_listener.Start();
                m_client = m_listener.AcceptTcpClient();

                if (m_client.Connected == true)
                {
                    this.Invoke((MethodInvoker)delegate
                    {
                        this.toolStripStatusLabel4.Visible = false;
                        this.toolStripStatusLabel5.Visible = false;
                        this.toolStripStatusLabel3.Visible = true;
                    });
                }
                using (var stream = m_client.GetStream())
                using (var output = File.Create("C:\\Stocktake\\EDADatabase.db"))
                {
                    byte[] buffer;
                    buffer = new byte[1024];
                    int bytesRead = -1;

                    progressBar1.BeginInvoke(new MethodInvoker(delegate { progressBar1.Maximum = 50; })); //Set Progessbar maximum
                    while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) > 0)
                    {
                        var xml = Encoding.UTF8.GetString(buffer,0,bytesRead);
                        string rec = System.Text.Encoding.ASCII.GetString(buffer, 0, bytesRead);
                        output.Write(buffer, 0, bytesRead);
                        progressBar1.Invoke(new updatebar(this.UpdateProgress));
                    }
                    if (bytesRead == 0)
                    {
                        Completed = true;
                        this.Invoke((MethodInvoker)delegate
                        {
                            this.m_client.GetStream().Close();
                            this.m_client.Dispose();
                            this.m_listener.Stop();
                            this.toolStripStatusLabel3.Visible = false;
                            this.toolStripStatusLabel5.Visible = true;

                        });
                        progressBar1.Invoke(new updatebar(this.UpdateProgress));
                        //break;
                    }
                }
            }
        }

我要做的就是读取文件名并使用文件名读取数据并将其保存到我的电脑。

标签： c#