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小黑哎代码
129 阅读4分钟
工具类
[AppleScript]
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package cn.itcast.screenbroadcast;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import javax.imageio.ImageIO;
public class Util {
//
private static Robot robot ;
//
static{
try {
robot = new Robot();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* ץͼ
*/
public static byte[] captureScreen(){
try {
BufferedImage image = robot.createScreenCapture(new Rectangle(0, 0, 1366, 768));
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(image, "jpg", baos);
return baos.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return null ;
}
public static byte[] long2Bytes(long l){
byte[] bytes = new byte[8] ;
bytes[0] = (byte)l ;
bytes[1] = (byte)(l >> 8) ;
bytes[2] = (byte)(l >> 16) ;
bytes[3] = (byte)(l >> 24) ;
bytes[4] = (byte)(l >> 32) ;
bytes[5] = (byte)(l >> 40) ;
bytes[6] = (byte)(l >> 48) ;
bytes[7] = (byte)(l >> 56) ;
return bytes ;
}
public static long byte2Long(byte[] bytes){
return ((long)(bytes[0] & 0xFF))
| ((long)(bytes[1] & 0xFF) << 8)
| ((long)(bytes[2] & 0xFF) << 16)
| ((long)(bytes[3] & 0xFF) << 24)
| ((long)(bytes[4] & 0xFF) << 32)
| ((long)(bytes[5] & 0xFF) << 40)
| ((long)(bytes[6] & 0xFF) << 48)
| ((long)(bytes[7] & 0xFF) << 56);
}
public static byte[] int2Bytes(int l){
byte[] bytes = new byte[8] ;
bytes[0] = (byte)l ;
bytes[1] = (byte)(l >> 8) ;
bytes[2] = (byte)(l >> 16) ;
bytes[3] = (byte)(l >> 24) ;
return bytes ;
}
public static int bytes2Int(byte[] bytes){
return ((bytes[0] & 0xFF))
| ((bytes[1] & 0xFF) << 8)
| ((bytes[2] & 0xFF) << 16)
| ((bytes[3] & 0xFF) << 24);
}
public static int byte2Int(byte[] bytes,int offset){
return ((bytes[0 + offset] & 0xFF))
| ((bytes[1 + offset] & 0xFF) << 8)
| ((bytes[2 + offset] & 0xFF) << 16)
| ((bytes[3 + offset] & 0xFF) << 24);
}
public static byte[] zipData(byte[] rawData) {
try {
//
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ZipOutputStream zos = new ZipOutputStream(baos);
zos.putNextEntry(new ZipEntry("one"));
zos.write(rawData);
zos.close();
return baos.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static byte[] unzipData(byte[] zipData) {
try {
//
ByteArrayInputStream bais = new ByteArrayInputStream(zipData);
ZipInputStream zis = new ZipInputStream(bais);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
zis.getNextEntry();
byte[] buf = new byte[1024];
int len = 0 ;
while((len = zis.read(buf)) != -1){
baos.write(buf, 0, len);
}
zis.close();
bais.close();
baos.close();
return baos.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}


幁单元实体类
[AppleScript]
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package cn.itcast.screenbroadcast;
public class FrameUnit {
private long frameId;
private int unitCont;
private int unitNo;
private int dateLen;
private byte[] data;
public long getFrameId() {
return frameId;
}
public void setFrameId(long frameId) {
this.frameId = frameId;
}
public int getUnitCont() {
return unitCont;
}
public void setUnitCont(int unitCont) {
this.unitCont = unitCont;
}
public int getUnitNo() {
return unitNo;
}
public void setUnitNo(int unitNo) {
this.unitNo = unitNo;
}
public int getDateLen() {
return dateLen;
}
public void setDateLen(int dateLen) {
this.dateLen = dateLen;
}
public byte[] getData() {
return data;
}
public void setData(byte[] data) {
this.data = data;
}
}

发送工具类
[AppleScript]
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package cn.itcast.screenbroadcast;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.util.List;
public class ScreenBroadCastSender {
private InetSocketAddress bcAddr ;
private DatagramSocket socket ;
public ScreenBroadCastSender(){
try {
socket = new DatagramSocket(8888);
bcAddr = new InetSocketAddress("192.168.12.255", 9999);
} catch (Exception e) {
e.printStackTrace();
}
}
public void send(List<FrameUnit> unitList){
try {
for(FrameUnit unit : unitList){
byte[] packetData = popFrameUnit(unit);
DatagramPacket pack = new DatagramPacket(packetData, packetData.length);
pack.setSocketAddress(bcAddr);
socket.send(pack);
}
} catch (Exception e) {
e.printStackTrace();
}
}
private byte[] popFrameUnit(FrameUnit unit){
byte[] bytes = new byte[unit.getDateLen() + 14] ;
byte[] frameIdBytes = Util.long2Bytes(unit.getFrameId());
System.arraycopy(frameIdBytes, 0, bytes, 0, 8);
bytes[8] = (byte)unit.getUnitCont();
bytes[9] = (byte)unit.getUnitNo();
byte[] dateLenBytes = Util.int2Bytes(unit.getDateLen());
System.arraycopy(dateLenBytes, 0, bytes, 10, 4);
System.arraycopy(unit.getData(), 0, bytes, 14, unit.getDateLen());
return bytes ;
}
}

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