Receiving end
Address already in use: Can not bind under the same protocol port can not conflict
1, using DatagramSocket designated port to create a receiving end
2, to prepare a packaged into DatagramPacket package
3, blocking accept packages from the receive (DatagramPacket P);
. 4, analysis data the reduction to the corresponding byte array type
getData () returns a byte array type, getLength () returns the data length, type of int
. 5, the release of resources
* /
public class http{
public static void main(String[]args) throws IOException
{
System.out.println("接收方启动子...");
//创建接口
DatagramSocket server=new DatagramSocket(8888);
//封装包裹
byte[] data=new byte[1024*60];
DatagramPacket packet= new DatagramPacket(data,0,data.length);
//接受包裹
server.receive(packet);
//分析数据
byte[] datas=packet.getData();
int len=packet.getLength();
ByteArrayInputStream bis=new ByteArrayInputStream(datas);
DataInputStream dis=new DataInputStream(new BufferedInputStream(bis));
String s=dis.readUTF();
int age=dis.readInt();
boolean flag=dis.readBoolean();
char ch=dis.readChar();
System.out.println(age+s);
//关闭资源
server.close();
}Basic types: the transmitting end
1, the transmitting side created DatagramSocket designated port
2, prepare the data must be converted into a byte array, will be transferred into a byte array type base
3, to prepare a packaged DatagramPacket package, requiring a destination (ip address and port)
4, a package sent send (of DatagramPacket P);
. 5, the release of resources
public class client{
public static void main(String[]args) throws IOException
{
System.out.println("发送方启动中...");
//创建接口
DatagramSocket client=new DatagramSocket(9999);
//准备数据，将数据转成字节数组
ByteArrayOutputStream baos=new ByteArrayOutputStream();
DataOutputStream dos=new DataOutputStream(new BufferedOutputStream(baos));
dos.writeUTF("杜雨龙最帅");
dos.writeInt(18);
dos.writeBoolean(false);
dos.writeChar('q');
dos.flush();
byte[] datas=baos.toByteArray();
//封装包裹
DatagramPacket packet =new DatagramPacket(datas,0,datas.length,new InetSocketAddress("localhost",8888));
//发送包裹
client.send(packet);
//释放资源
client.close();
}
}