如何在java中通过UDP发送int
我正在尝试编写一些通过UDP发送单个int的代码。我到目前为止的代码：
发件人：
int num = 2;
DatagramSocket socket = new DatagramSocket();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
PrintStream pout = new PrintStream( bout );
pout.print(num);
byte[] barray = bout.toByteArray();
DatagramPacket packet = new DatagramPacket( barray, barray.length );
InetAddress remote_addr = InetAddress.getByName("localhost");
packet.setAddress( remote_addr );
packet.setPort(1989);
socket.send( packet );
DatagramSocket socket = new DatagramSocket(1989);
DatagramPacket packet = new DatagramPacket(new byte[256] , 256);
socket.receive(packet);
ByteArrayInputStream bin = new ByteArrayInputStream(packet.getData());
for (int i=0; i< packet.getLength(); i++)
{
int data = bin.read();
if(data == -1)
break;
else
System.out.print((int) data);
没有找到相关结果
已邀请:
3 个回复
醒荒捆府绣
import java.io.*; public class Main { public static void main(String[] args) throws Exception { final ByteArrayOutputStream byteOut = new ByteArrayOutputStream(); final DataOutputStream dataOut = new DataOutputStream(byteOut); dataOut.writeInt(1); dataOut.writeDouble(1.2); dataOut.writeLong(4l); dataOut.close(); // or dataOut.flush() final byte[] bytes = byteOut.toByteArray(); final ByteArrayInputStream byteIn = new ByteArrayInputStream(bytes); final DataInputStream dataIn = new DataInputStream(byteIn); final int integ = dataIn.readInt(); final double doub = dataIn.readDouble(); final long lon = dataIn.readLong(); System.out.println(integ); System.out.println(doub); System.out.println(lon); }闯舱酮
悍蕾驮苇袜
DatagramSocket socket = new DatagramSocket(1989); DatagramPacket packet = new DatagramPacket(new byte[256] , 256); socket.receive(packet); System.out.print(new String(packet.getData()));