SpringBoot+Netty+WebSocket 实现消息推送

stf1年前 ⋅ 1302 阅读
public class NettyServer {
    private final int port;

    public NettyServer(int port) {
        this.port = port;
    }

    public void start() throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup();

        EventLoopGroup group = new NioEventLoopGroup();
        try {
            ServerBootstrap sb = new ServerBootstrap();
            sb.option(ChannelOption.SO_BACKLOG, 1024);
            sb.group(group, bossGroup) // 绑定线程池
                    .channel(NioServerSocketChannel.class) // 指定使用的channel
                    .localAddress(this.port)// 绑定监听端口
                    .childHandler(new ChannelInitializer<SocketChannel>() { // 绑定客户端连接时候触发操作

                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            System.out.println("收到新连接");
                            //websocket协议本身是基于http协议的,所以这边也要使用http解编码器
                            ch.pipeline().addLast(new HttpServerCodec());
                            //以块的方式来写的处理器
                            ch.pipeline().addLast(new ChunkedWriteHandler());
                            ch.pipeline().addLast(new HttpObjectAggregator(8192));
                            ch.pipeline().addLast(new WebSocketServerProtocolHandler("/ws", null, true, 65536 * 10));
                            ch.pipeline().addLast(new MyWebSocketHandler());
                        }
                    });
            ChannelFuture cf = sb.bind().sync(); // 服务器异步创建绑定
            System.out.println(NettyServer.class + " 启动正在监听: " + cf.channel().localAddress());
            cf.channel().closeFuture().sync(); // 关闭服务器通道
        } finally {
            group.shutdownGracefully().sync(); // 释放线程池资源
            bossGroup.shutdownGracefully().sync();
        }
    }
}
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Netty-Websocket</title>
    <script type="text/javascript">
        // by zhengkai.blog.csdn.net
        var socket;
        if(!window.WebSocket){
            window.WebSocket = window.MozWebSocket;
        }
        if(window.WebSocket){
            socket = new WebSocket("ws://127.0.0.1:12345/ws");
            socket.onmessage = function(event){
                var ta = document.getElementById('responseText');
                ta.value += event.data+"\r\n";
            };
            socket.onopen = function(event){
                var ta = document.getElementById('responseText');
                ta.value = "Netty-WebSocket服务器。。。。。。连接  \r\n";
            };
            socket.onclose = function(event){
                var ta = document.getElementById('responseText');
                ta.value = "Netty-WebSocket服务器。。。。。。关闭 \r\n";
            };
        }else{
            alert("您的浏览器不支持WebSocket协议!");
        }
        function send(message){
            if(!window.WebSocket){return;}
            if(socket.readyState == WebSocket.OPEN){
                socket.send(message);
            }else{
                alert("WebSocket 连接没有建立成功!");
            }

        }

    </script>
</head>
<body>
<form onSubmit="return false;">
    <label>ID</label><input type="text" name="uid" value="${uid!!}" /> <br />
    <label>TEXT</label><input type="text" name="message" value="这里输入消息" /> <br />
    <br /> <input type="button" value="发送ws消息"
                  onClick="send(this.form.uid.value+':'+this.form.message.value)" />
    <hr color="black" />
    <h3>服务端返回的应答消息</h3>
    <textarea id="responseText" style="width: 1024px;height: 300px;"></textarea>
</form>
</body>
</html>

https://mp.weixin.qq.com/s/1X65lYYh91z0BnYWeST-Vw

全部评论: 0

    相关推荐