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在Java网络编程中,实现并发通常涉及以下几种方法:
public class Server {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = new ServerSocket(8888);
while (true) {
Socket socket = serverSocket.accept();
new Thread(new ClientHandler(socket)).start();
}
}
}
class ClientHandler implements Runnable {
private Socket socket;
public ClientHandler(Socket socket) {
this.socket = socket;
}
@Override
public void run() {
// 处理客户端请求
}
}
public class Server {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = new ServerSocket(8888);
ExecutorService executorService = Executors.newFixedThreadPool(10);
while (true) {
Socket socket = serverSocket.accept();
executorService.submit(new ClientHandler(socket));
}
}
}
class ClientHandler implements Runnable {
private Socket socket;
public ClientHandler(Socket socket) {
this.socket = socket;
}
@Override
public void run() {
// 处理客户端请求
}
}
public class Server {
public static void main(String[] args) throws IOException {
Selector selector = Selector.open();
ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();
serverSocketChannel.bind(new InetSocketAddress(8888));
serverSocketChannel.configureBlocking(false);
serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);
while (true) {
selector.select();
Set<SelectionKey> selectedKeys = selector.selectedKeys();
Iterator<SelectionKey> iterator = selectedKeys.iterator();
while (iterator.hasNext()) {
SelectionKey key = iterator.next();
if (key.isAcceptable()) {
ServerSocketChannel server = (ServerSocketChannel) key.channel();
SocketChannel socketChannel = server.accept();
socketChannel.configureBlocking(false);
socketChannel.register(selector, SelectionKey.OP_READ);
} else if (key.isReadable()) {
SocketChannel socketChannel = (SocketChannel) key.channel();
// 处理客户端请求
}
iterator.remove();
}
}
}
}
public class Server {
public static void main(String[] args) throws IOException {
AsynchronousServerSocketChannel serverSocketChannel = AsynchronousServerSocketChannel.open();
serverSocketChannel.bind(new InetSocketAddress(8888));
serverSocketChannel.accept(null, new CompletionHandler<AsynchronousSocketChannel, Void>() {
@Override
public void completed(AsynchronousSocketChannel socketChannel, Void attachment) {
serverSocketChannel.accept(null, this);
// 处理客户端请求
}
@Override
public void failed(Throwable exc, Void attachment) {
// 处理错误
}
});
}
}
这些方法可以根据实际需求进行选择和组合,以实现Java网络编程中的并发。
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