java实现将rtsp流转换为websocket-flv推送前端播放的代码

实现将RTSP流转换为WebSocket-FLV推送前端播放的代码，可以使用开源的Java框架Netty进行实现。下面是一个简单的示例代码：

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
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.HttpContentCompressor;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.rtsp.RtspDecoder;
import io.netty.handler.codec.rtsp.RtspEncoder;
import io.netty.handler.stream.ChunkedWriteHandler;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.handler.stream.ChunkedWriteHandler;

public class RtspToWebSocketServer {

    private final int port;

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

    public void run() throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        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 {
                            ChannelPipeline pipeline = ch.pipeline();

                            // 添加RTSP协议编码解码器
                            pipeline.addLast("rtspEncoder", new RtspEncoder());
                            pipeline.addLast("rtspDecoder", new RtspDecoder());

                            // 添加HTTP协议编码解码器
                            pipeline.addLast("httpServerCodec", new HttpServerCodec());
                            pipeline.addLast("httpObjectAggregator", new HttpObjectAggregator(65536));
                            pipeline.addLast("httpContentCompressor", new HttpContentCompressor());

                            // 添加WebSocket协议处理器
                            pipeline.addLast("webSocketHandler", new WebSocketServerProtocolHandler("/ws"));
                            pipeline.addLast("chunkedWriteHandler", new ChunkedWriteHandler());

                            // 添加自定义的RTSP转WebSocket处理器
                            pipeline.addLast("rtspToWebSocketHandler", new RtspToWebSocketHandler());
                        }
                    });

            Channel ch = b.bind(port).sync().channel();

            ch.closeFuture().addListener((ChannelFutureListener) future -> {
                bossGroup.shutdownGracefully();
                workerGroup.shutdownGracefully();
            });

            System.out.println("RTSP to WebSocket server started at port " + port + '.');
            System.out.println("Open your browser and navigate to http://127.0.0.1:" + port + '/');
            ch.closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws Exception {
        int port = 8080;
        new RtspToWebSocketServer(port).run();
    }
}

上述代码中，我们使用了Netty框架来实现RTSP转WebSocket的功能。具体步骤如下：

1. 创建一个`ServerBootstrap`对象，用于启动服务器；
2. 添加`RtspEncoder`和`RtspDecoder`，用于编解码RTSP协议；
3. 添加`HttpServerCodec`、`HttpObjectAggregator`和`HttpContentCompressor`，用于编解码HTTP协议；
4. 添加`WebSocketServerProtocolHandler`，用于处理WebSocket协议；
5. 添加`ChunkedWriteHandler`，用于处理大数据流；
6. 添加自定义的`RtspToWebSocketHandler`，用于将RTSP流转换为WebSocket-FLV流；
7. 绑定端口并启动服务器。

需要注意的是，上述代码只是一个简单的示例，实际应用场景中可能需要根据具体需求进行修改。