netty-websocket
时间: 2023-09-13 07:09:06 浏览: 118
Netty是一个高性能的网络编程框架,而websocket是一种在Web应用中实现双向通信的协议。Netty可以用来实现WebSocket服务器,从而让Web应用能够与客户端建立持久化的连接,并进行双向通信。
要在Netty中实现WebSocket服务器,你可以使用Netty提供的WebSocket协议的支持。下面是一个简单的示例代码:
```java
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
public class WebSocketServer {
private final int port;
public WebSocketServer(int port) {
this.port = port;
}
public void run() throws Exception {
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try {
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ch.pipeline().addLast(
new HttpServerCodec(),
new HttpObjectAggregator(65536),
new WebSocketServerProtocolHandler("/websocket"),
new WebSocketServerHandler());
}
});
Channel ch = b.bind(port).sync().channel();
System.out.println("WebSocket Server started at port " + port + ".");
System.out.println("Open your browser and navigate to http://localhost:" + port + "/");
ChannelFuture future = ch.closeFuture();
future.sync();
} finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
}
public static void main(String[] args) throws Exception {
int port = 8080;
if (args.length > 0) {
port = Integer.parseInt(args[0]);
}
new WebSocketServer(port).run();
}
}
```
在上面的示例代码中,我们创建了一个WebSocket服务器,并将其绑定到指定的端口上。通过`WebSocketServerHandler`类来处理客户端和服务器之间的WebSocket通信。
你可以根据自己的需求,定制`WebSocketServerHandler`来处理不同的业务逻辑。例如,你可以在`channelRead()`方法中处理接收到的WebSocket消息,然后通过`channel().writeAndFlush()`方法发送响应消息给客户端。
希望以上信息能对你有所帮助!如果你还有其他问题,请继续提问。
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