写一段netty相关的java代码
时间: 2023-03-29 11:00:53 浏览: 76
很高兴回答你的问题。以下是一段使用Netty框架的Java代码:
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
public class NettyClient {
private final String host;
private final int port;
public NettyClient(String host, int port) {
this.host = host;
this.port = port;
}
public void run() throws Exception {
EventLoopGroup group = new NioEventLoopGroup();
try {
Bootstrap bootstrap = new Bootstrap();
bootstrap.group(group)
.channel(NioSocketChannel.class)
.option(ChannelOption.TCP_NODELAY, true)
.handler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ch.pipeline().addLast(new NettyClientHandler());
}
});
ChannelFuture future = bootstrap.connect(host, port).sync();
future.channel().closeFuture().sync();
} finally {
group.shutdownGracefully();
}
}
public static void main(String[] args) throws Exception {
String host = "localhost";
int port = 808;
new NettyClient(host, port).run();
}
}
这段代码创建了一个Netty客户端,连接到指定的主机和端口,并使用TCP协议进行通信。它使用NioEventLoopGroup来处理事件循环,使用NioSocketChannel作为通道类型。在初始化通道时,它添加了一个NettyClientHandler来处理接收到的数据。最后,它启动了客户端并等待连接关闭。