class Client4DownloadFile implements Runnable{
//标示
private String name;
private FileChannel fileChannel;
public Client4DownloadFile(String name , RandomAccessFile randomAccessFile){
this.name = name;
this.fileChannel = randomAccessFile.getChannel();
}
private ByteBuffer buffer = ByteBuffer.allocate(8 * 1024);
@Override
public void run() {
try {
SocketChannel sc = SocketChannel.open();
Selector selector = Selector.open();
sc.configureBlocking(false);
sc.register(selector, SelectionKey.OP_CONNECT);
sc.connect(new InetSocketAddress("127.0.0.1",8887));
while(true){
selector.select();
Iterator<SelectionKey> iterator = selector.selectedKeys().iterator();
while(iterator.hasNext()){
SelectionKey s = iterator.next();
if(s.isConnectable()){
System.out.println("客户端[" + name + "]已经连接上了服务器...");
SocketChannel sc2 = (SocketChannel)s.channel();
if(sc2.isConnectionPending() && sc2.finishConnect()){
sc2.configureBlocking(false);
String msg = "Thread-" + name + " send message!";
byte[] b = msg.getBytes("utf-8");
sc2.write(ByteBuffer.wrap(b));
System.out.println("客户端[" + name + "]给服务器端发送文本消息完毕...");
sc2.register(selector, SelectionKey.OP_READ);
}
}
if(s.isReadable()){
SocketChannel sc3 = (SocketChannel)s.channel();
buffer.clear();
int count = sc3.read(buffer);
if(count <= 0){
s.cancel();
System.out.println("Thread " + name + " 下载完毕...");
}
while(count > 0){
buffer.flip();
fileChannel.write(buffer);
count = sc3.read(buffer);
}
}
iterator.remove();
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public class ClientMain {
public static void main(String[] args) throws FileNotFoundException{
for(int i = 0 ; i < 10 ; i++){
File file = new File("e:/tmp/" + i + ".pdf");
RandomAccessFile raf = new RandomAccessFile(file,"rw");
Client4DownloadFile client4DownloadFile = new Client4DownloadFile("" + i, raf);
new Thread(client4DownloadFile).start();
}
}
}
