java 打印

采用UDP的通讯方式，调用java自带的awt打印接口
服务器端代码
Server：
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;
public class Server
{
private DatagramSocket server;

private DatagramPacket packet;

private byte[] b;

public Server()
{
startServer();
}

private void startServer()
{
try
{
server = new DatagramSocket(12345);
while(true)
{
b = new byte[1024];
packet = new DatagramPacket(b, b.length);
server.receive(packet);

new Thread(new PrintThread(packet, b)).start();
}

}catch(SocketException e)
{
e.printStackTrace();
}catch(IOException e)
{
e.printStackTrace();
}finally
{
server.close();
}
}
public static void main(String[] args)
{
new Server();
}
}
打印线程代码
PrintThread：
import java.net.DatagramPacket;
public class PrintThread implements Runnable
{
private DatagramPacket packet;
private byte[] b;
public PrintThread(DatagramPacket packet, byte[] b)
{
this.packet = packet;
this.b = b;
}
public void run()
{
int i = 0;
i = packet.getLength();
if(i>0)
{
String str = new String(b, 0, i);
new Print().doPrint(str);
}
}
}
打印的实际代码
Print：
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintException;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.SimpleDoc;
import javax.print.attribute.DocAttributeSet;
import javax.print.