简单JAVA socket 笔记

Server：

                ServerSocket server = new ServerSocket(PORT, 1);  // 打开Server并监听

                Socket client = server.accept();  // block 直到有client，得到对应socket 句柄
                System.out.println("Client connected");

                while (true) {
                    BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream()));  // 得到输入流
                    System.out.println("Read from client");
                    String textLine = reader.readLine() + "/n";

                    if (textLine.equalsIgnoreCase("EXIT/n")) {
                        System.out.println("EXIT invoked, closing client");
                        break;
                    }
                   
                    if (textLine.equalsIgnoreCase("STOP/n")) {
                        System.out.println("Stop server");
                        running = true;
                        break;
                    }

                    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(client.getOutputStream())); // 对应
输出流

                    System.out.println("Echo input to client");
                    writer.write("ECHO from server: " + textLine, 0, textLine.length() + 18);
                    writer.flush();
                }
                client.close(); // 关闭

 

 

 

 

Client：

 

            socket = new Socket(ip, Integer.parseInt(port));   // 得到server socket 句柄
            writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())); // 写数据流
            reader = new BufferedReader(new InputStreamReader(socket.getInputStream())); // 读数据流

            // send input terminated with /n
            String input = socketData;
            writer.write(input + "/n", 0, input.length() + 1);
            writer.flush();

            // read back output
            output = reader.readLine();
            Log.d(Constants.LOGTAG, " " + SimpleSocket.CLASSTAG + " output - " + output);

            // send EXIT and close
            writer.write("EXIT/n", 0, 5);
            writer.flush();