Question

伙计们，我是套接字编程的新手。我想将数据从客户端发送到服务器，并将某些文件从服务器发送回客户端，但仅在某些条件下。因此，我有一个applet，可以从用户和按钮中获取一些输入。用户注册时，数据从客户端（小程序）发送到服务器，并存储在文件中（本地）到目前为止，我已经能够做到。但是我的问题是我不知道该如何实现：当用户仅单击getData按钮时，我必须将文件从服务器发送回客户端？如此丰富的代码

Client.java

 if (action.equals("register")) {
            String name = name.getText().trim();
            String address = addres.getText().trim();

            User user = new User(name, address);
            toServer.writeObject(user);
        }
 else if (action.equals("GetData")) {
            DataInputStream dis = new 
                         DataInputStream(socket.getInputStream());
            BufferedReader br = null;

            try {

                br = new BufferedReader(new InputStreamReader(dis));

                String line = null;

                while ((line = br.readLine()) != null) {
                    if (line.equalsIgnoreCase("quit")) {
                        break;
                    }
                    System.out.println("Line entered : " + line);
                }

            } catch (IOException e) {
                System.out.println("Exception while reading input " +e);
            } finally {
                // close the streams using close method
                try {
                    if (br != null) {
                        br.close();
                    }
                } catch (IOException ioe) {
                    System.out.println("Error while closing stream: " + ioe);
                }

            }

Server.java

 while (true) {
                Socket socket = serverSocket.accept();
                fromClient = new ObjectInputStream(socket.getInputStream());
                Object object = fromClient.readObject();
                toFile.writeObject(object);
                System.out.println("Object created");

            }

有人可以帮我吗。谢谢

将文件从服务器发送到客户端套接字编程

0 个答案: