服務端

package lesson02;import java.io.*;import java.net.ServerSocket;import java.net.Socket;/** * 服務端接收文件 */public class TcpServerDemo2 { public static void main(String[] args) throws IOException { //1、創建服務 ServerSocket serverSocket = new ServerSocket(9000); //2、監聽客戶端的連接 Socket socket = serverSocket.accept();//阻塞式監聽，會一直等待客戶端連接 //3、獲取輸入流 InputStream is = socket.getInputStream(); //4、文件輸出 FileOutputStream fos = new FileOutputStream(new File('receive.jpg')); byte[] buffer = new byte[1024]; int len; while ((len = is.read(buffer)) != -1){ fos.write(buffer, 0, len); } //通知客戶端我接收完畢了 OutputStream os = socket.getOutputStream(); os.write('我接收完畢了，你可以斷開了'.getBytes()); //5、關閉資源 fos.close(); is.close(); socket.close(); serverSocket.close(); }}

客戶端

package lesson02;import java.io.*;import java.net.InetAddress;import java.net.Socket;/** * 客戶端上傳文件 */public class TcpClientDemo2 { public static void main(String[] args) throws Exception { //1、創建一個Socket連接 Socket socket = new Socket(InetAddress.getByName('127.0.0.1'), 90000); //2、創建一個輸出流 OutputStream os = socket.getOutputStream(); //3、讀取文件 FileInputStream fis = new FileInputStream(new File('toux.jpg')); //4、寫出文件 byte[] buffer = new byte[1024]; int len; while ((len = fis.read(buffer)) != -1){ os.write(buffer, 0, len); } //通知服務器，我已經結束了 socket.shutdownOutput(); //我已經傳輸完了 //確定服務器接收完畢，才能夠斷開連接 InputStream inputStream = socket.getInputStream(); //Sting byte[] ByteArrayOutputStream baos = new ByteArrayOutputStream(); byte[] buffer2 = new byte[1024]; int len2; while ((len2 = inputStream.read(buffer2)) != -1){ baos.write(buffer2, 0, len2); } System.out.println(baos.toString()); //5、關閉資源 fis.close(); os.close(); socket.close(); }}

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