TCP服务器端:
public static void main(String[] ars) throws Exception { //1、创建服务 ServerSocket ss = new ServerSocket(8888); //2、监听客户端连接 Socket socket = ss.accept(); //3、获取输入流 InputStream is = socket.getInputStream(); //4、文件输出 FileOutputStream fos = new FileOutputStream(new File("demo.jpg")); byte[] bytes = new byte[1024]; int len; while ((len = is.read(bytes)) != -1) { fos.write(bytes, 0, len); } is.close(); ss.close(); socket.close(); ss.close(); }
TCP客户端:
public static void main(String[] args) throws Exception { //1、创建一个连接 Socket socket = new Socket(InetAddress.getByName("localhost"), 8888); //2、创建输出流 OutputStream os = socket.getOutputStream(); //3、读取文件 FileInputStream fis = new FileInputStream(new File("src/com/zhixi/TCP实现文件的上传和下载/二次元.jpg")); //4、写出文件 byte[] bytes = new byte[1024]; int len; while ((len = fis.read(bytes)) != -1) { os.write(bytes,0,len); } fis.close(); os.close(); socket.close(); }
开启服务器,开启客户端,就会把项目资源下的文件进行下载了: