Socket

使用TCP

客户端

Socket socket = new Socket("ip",端口);

InputStream is = socket.getInputStream();

DataInputStream dis = new DataInputStream(is);

OutputStream os = socket.getOutputStream();

DataInputStream dos = new DataOutputStream(os);

服务器端

ServerSocket serverSocket = new ServerSocket(端口);

Socket socket = serverSocket.accept();

//获取流的方式与客户端一样

读取输入流

byte[] buffer = new byte[1024];

do{

int count = is.read(buffer);

if(count <= 0){ break; }

else{

//对buffer保存或者做些其他操作

}

}

while(true);

使用UDP

客户端和服务器端一样的

DatagramSocket socket = new DatagramSocket(端口);

InetAddress serverAddress = InetAddress.getbyName("ip");

//发送

DatagramPackage packet = new DatagramPacket(buffer, length, host, port);

socket.send(packet);

//接收

byte[] buf = new byte[1024];

DatagramPacket packet = new DatagramPacket(buf, 1024);

Socket.receive(packet);