netty4.1 protobuf websocket编码器
时间: 2023-09-22 08:07:25 浏览: 145
对于使用Netty 4.1和Protobuf的WebSocket编码器,你可以按照以下步骤进行设置:
1. 首先,确保你已经添加了Netty和Protobuf的依赖到你的项目中。
2. 创建一个WebSocket编码器类,该类将负责将Protobuf消息编码为WebSocket帧。下面是一个示例代码:
```java
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
public class ProtobufWebSocketEncoder extends MessageToByteEncoder<MessageLite> {
@Override
protected void encode(ChannelHandlerContext ctx, MessageLite msg, ByteBuf out) throws Exception {
byte[] bytes = msg.toByteArray();
out.writeBytes(bytes);
}
}
```
3. 在你的Netty初始化代码中,添加WebSocket编码器到你的ChannelPipeline中。下面是一个示例代码:
```java
import io.netty.channel.ChannelInitializer;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
public class WebSocketServerInitializer extends ChannelInitializer<SocketChannel> {
@Override
protected void initChannel(SocketChannel ch) throws Exception {
ch.pipeline()
.addLast(new HttpServerCodec())
.addLast(new HttpObjectAggregator(65536))
.addLast(new WebSocketServerProtocolHandler("/websocket"))
.addLast(new ProtobufWebSocketEncoder())
.addLast(new YourCustomWebSocketHandler());
}
}
```
在上面的代码中,`YourCustomWebSocketHandler`是你自己实现的处理WebSocket消息的处理器。
4. 最后,在你的Netty服务器启动代码中,绑定正确的端口并启动服务器。下面是一个示例代码:
```java
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
public class WebSocketServer {
public static void main(String[] args) throws InterruptedException {
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try {
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.childHandler(new WebSocketServerInitializer());
ChannelFuture f = b.bind(8080).sync();
f.channel().closeFuture().sync();
} finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
}
}
```
确保将端口号8080更改为你实际使用的端口号。
以上就是使用Netty 4.1和Protobuf的WebSocket编码器的基本设置。请根据你的实际需求进行适当的修改和扩展。
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