netty 4.0 Object 传输
1对于服务端,
private void bindPort(int port){ EventLoopGroup workGroup = new NioEventLoopGroup(); EventLoopGroup bossGroup = new NioEventLoopGroup(); try{ ServerBootstrap b = new ServerBootstrap(); b.group(bossGroup, workGroup); b.channel(NioServerSocketChannel.class) .option(ChannelOption.SO_BACKLOG, 128) .handler(new LoggingHandler(LogLevel.INFO)) .childHandler(new ChannelInitializer<SocketChannel>() { @Override protected void initChannel(SocketChannel ch) throws Exception { ch.pipeline().addLast(new ObjectDecoder(1024*1024, ClassResolvers.weakCachingConcurrentResolver( this.getClass().getClassLoader()))); ch.pipeline().addLast(new ObjectEncoder()); ch.pipeline().addLast(new ServerReqHandler()); } }); ChannelFuture channelFuture = b.bind(port).sync(); channelFuture.channel().closeFuture().sync(); }catch(Exception e){ }finally{ workGroup.shutdownGracefully(); bossGroup.shutdownGracefully(); } } class ServerReqHandler extends ChannelInboundHandlerAdapter{ @Override public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception { cause.printStackTrace(); ctx.close(); } @Override public void channelActive(ChannelHandlerContext ctx) throws Exception { System.out.println("channel active"); } @Override public void channelRead(ChannelHandlerContext ctx, Object msg)throws Exception { ServerMsg serverMsg = (ServerMsg) msg; System.out.println(serverMsg); } }
在添加自己的Handler(ServerReqHandler)之前,要添加ObjectDecoder和ObjectEncoder,
自己的Handler在接受到类之后可直接强转,这里注意,被传输的类(ServerMsg)一定要实现Serializable接口(序列化)
2.对于客户端
private void connect(int port){ EventLoopGroup workGrop = new NioEventLoopGroup(); try{ Bootstrap bootstrap = new Bootstrap(); bootstrap.group(workGrop); bootstrap.channel(NioSocketChannel.class) .option(ChannelOption.TCP_NODELAY, true) .handler(new ChannelInitializer<Channel>() { @Override protected void initChannel(Channel ch) throws Exception { ch.pipeline().addLast(new ObjectDecoder(1024*1024, ClassResolvers.weakCachingConcurrentResolver( this.getClass().getClassLoader()))); ch.pipeline().addLast(new ObjectEncoder()); ch.pipeline().addLast(new ClientReqHandler()); } }); ChannelFuture channelFuture = bootstrap.connect("localhost", port).sync(); channelFuture.channel().closeFuture().sync(); }catch(Exception e){ e.printStackTrace(); }finally{ workGrop.shutdownGracefully(); } } class ClientReqHandler extends ChannelInboundHandlerAdapter{ @Override public void channelActive(ChannelHandlerContext ctx) throws Exception { for(int i = 0; i < 10; i++){ ServerMsg msg = parseServerMsg(i); ctx.write(msg); } ctx.flush(); } private ServerMsg parseServerMsg(int id){ ServerMsg msg = new ServerMsg(); msg.setId(id); msg.setName(id + ""); return msg; } @Override public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)throws Exception { cause.printStackTrace(); ctx.close(); } } 要添加的Handler与服务端一样, 在自己的Handler(ClientReqHandler)中,发送Msg时直接用ctx 附ServerMsg public class ServerMsg implements Serializable { private static final long serialVersionUID = 1L; private int id; private String name; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() { return "id: " + id + " name: " + name; } }
本文出自 “明镜高悬” 博客,请务必保留此出处http://chpn208.blog.51cto.com/3115852/1630524
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。