Java StringEncoder類代碼示例

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
@Override
public void initChannel(SocketChannel ch) throws Exception {
    ChannelPipeline pipeline = ch.pipeline();

    pipeline.addLast(new LoggingHandler());
    // Add SSL handler first to encrypt and decrypt everything.
    // In this example, we use a bogus certificate in the server side
    // and accept any invalid certificates in the client side.
    // You will need something more complicated to identify both
    // and server in the real world.
    if (sslCtx != null)
        pipeline.addLast(sslCtx.newHandler(ch.alloc(), SecureChatClient.HOST, SecureChatClient.PORT));

    // On top of the SSL handler, add the text line codec.
    pipeline.addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
    pipeline.addLast(new StringDecoder());
    pipeline.addLast(new StringEncoder());

    // and then business logic.
    pipeline.addLast(new SecureChatClientHandler());
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
@Test
public void serverBootStrapWithOptionsTest() throws InstantiationException, IllegalAccessException, ClassNotFoundException {
	LinkedHashMap<String, Object> channelHandlerOptions = new LinkedHashMap<String, Object>();
	
	channelHandlerOptions.put("lineFrame", new LineBasedFrameDecoder(2000));
	channelHandlerOptions.put("decoder", new StringDecoder());
	channelHandlerOptions.put("encoder", new StringEncoder());
	channelHandlerOptions.put("handler", new ChannelInboundHandlerAdapter() {
		
		@Override
		public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
			log.info("Message Received and forward to ConsumerProcessor. Msg -> {}", msg);
		}
	});
	
	Server server = BootStrap.builder()
			.port(5252)
			.options(channelHandlerOptions)
			.messageConsumer(msg -> log.info(msg))
			.build();
	
	assertNotNull(server);
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
public EchoClient(String host, int port) {
    EventLoopGroup worker = new NioEventLoopGroup();

    Bootstrap b = new Bootstrap();

    b.group(worker)
            .channel(NioSocketChannel.class)
            .option(ChannelOption.SO_KEEPALIVE, true)
            .handler(new ChannelInitializer<SocketChannel>() {
                @Override
                protected void initChannel(SocketChannel socketChannel) {
                    socketChannel.pipeline()
                            .addLast(new StringDecoder())
                            .addLast(new StringEncoder())
                            .addLast(ech);
                }
            });

    b.connect(host, port);
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
public void start() {
    ServerBootstrap b = new ServerBootstrap();

    b.group(workerGroup)
            .channel(NioServerSocketChannel.class)
            .option(ChannelOption.SO_KEEPALIVE, true)
            .childHandler(new ChannelInitializer<SocketChannel>() {
                @Override
                protected void initChannel(SocketChannel socketChannel) throws Exception {
                    System.out.println("New client connected! (" + socketChannel.localAddress() + ")");

                    socketChannel.pipeline().addLast(new StringEncoder()).addLast(new StringEncoder()).addLast(new EchoServerHandler());
                }
            });

    f = b.bind(port);
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
/**
 * Start WebImageViewer.
 * @param fsimage the fsimage to load.
 * @throws IOException if fail to load the fsimage.
 */
@VisibleForTesting
public void initServer(String fsimage)
        throws IOException, InterruptedException {
  final FSImageLoader loader = FSImageLoader.load(fsimage);

  bootstrap.childHandler(new ChannelInitializer<SocketChannel>() {
    @Override
    protected void initChannel(SocketChannel ch) throws Exception {
      ChannelPipeline p = ch.pipeline();
      p.addLast(new HttpRequestDecoder(),
        new StringEncoder(),
        new HttpResponseEncoder(),
        new FSImageHandler(loader, allChannels));
    }
  });

  channel = bootstrap.bind(address).sync().channel();
  allChannels.add(channel);

  address = (InetSocketAddress) channel.localAddress();
  LOG.info("WebImageViewer started. Listening on " + address.toString() + ". Press Ctrl+C to stop the viewer.");
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
@Override
protected void initChannel(SocketChannel ch) throws Exception {
	ch.config().setAllowHalfClosure(true);
	ChannelPipeline pipeline = ch.pipeline();

	//IdleStateHandler 與客戶端鏈接後，根據超出配置的時間自動觸發userEventTriggered
	//readerIdleTime服務端長時間沒有讀到數據，則為讀空閑，觸發讀空閑監聽，並自動關閉鏈路連接，周期性按readerIdleTime的超時間觸發空閑監聽方法
	//writerIdleTime服務端長時間沒有發送寫請求，則為空閑，觸發寫空閑監聽,空閑期間，周期性按writerIdleTime的超時間觸發空閑監聽方法
	//allIdleTime 服務端在allIdleTime時間內未接收到客戶端消息，或者，也未去向客戶端發送消息，則觸發周期性操作
	pipeline.addLast("ping", new IdleStateHandler(10, 20, 35, TimeUnit.SECONDS));
	// 以("\n")為結尾分割的 解碼器
	pipeline.addLast("framer", new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
	// 字符串解碼 和 編碼
	pipeline.addLast("decoder", new StringDecoder());
	pipeline.addLast("encoder", new StringEncoder());
	// 自己的邏輯Handler
	pipeline.addLast("handler", new DataServerHandler(nodeInfo));
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
public void connect(String host, int port) throws InterruptedException {
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group)
                .channel(NioSocketChannel.class)
                .option(ChannelOption.TCP_NODELAY, true)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {

                        ch.pipeline().addLast(new FixedLengthFrameDecoder(1<<5));
                        ch.pipeline().addLast(new StringDecoder());
                        ch.pipeline().addLast(new StringEncoder());

                        ch.pipeline().addLast(new ClientHandler());
                    }
                });

        ChannelFuture future = b.connect(host, port).sync();

        future.channel().closeFuture().sync();
    } finally {
        group.shutdownGracefully();
    }
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
@Override
protected void initChannel(SocketChannel socketChannel) throws Exception {
    ChannelPipeline pipeline = socketChannel.pipeline();
    pipeline.addLast("framer", new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()))
            .addLast("decoder", new StringDecoder())
            .addLast("encoder", new StringEncoder())
            .addLast("json_to_ob",new JsonToObjectHandler())
            .addLast("register",new RegisterHandler())
            .addLast("authority", new AuthorityHandler())
            .addLast("enterGroup",new EnterGroupHandler())
            .addLast("channelManager", new ChannelManagerHandler())
            .addLast("createGroup", new CreateGroupHandler())
            .addLast("addGroup", new AddGroupHandler())
            .addLast("deleteGroup",new DeleteGroupHandler())
            .addLast("Limiter", new LimiterHandler())
            .addLast("log", new LoggerHandler())
            .addLast("response", new Responser());
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
@Override
protected void initChannel(SocketChannel ch) throws Exception {
    ChannelPipeline pipeline = ch.pipeline();

    /*
     * 這個地方的 必須和服務端對應上。否則無法正常解碼和編碼
     * 
     * 解碼和編碼 我將會在下一張為大家詳細的講解。再次暫時不做詳細的描述
     */
    pipeline.addLast("framer", new DelimiterBasedFrameDecoder(8192,
            Delimiters.lineDelimiter()));
    pipeline.addLast("decoder", new StringDecoder());
    pipeline.addLast("encoder", new StringEncoder());

    // 客戶端的邏輯
    pipeline.addLast("handler", new HelloClientHandler());
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
@Override
public void initChannel(SocketChannel ch) throws Exception {
    ChannelPipeline pipeline = ch.pipeline();

    // Add SSL handler first to encrypt and decrypt everything.
    // In this example, we use a bogus certificate in the server side
    // and accept any invalid certificates in the client side.
    // You will need something more complicated to identify both
    // and server in the real world.
    pipeline.addLast(sslCtx.newHandler(ch.alloc()));

    // On top of the SSL handler, add the text line codec.
    pipeline.addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
    pipeline.addLast(new StringDecoder());
    pipeline.addLast(new StringEncoder());

    // and then business logic.
    pipeline.addLast(new SecureChatServerHandler());
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
@Override
public void initChannel(SocketChannel ch) throws Exception {
    ChannelPipeline pipeline = ch.pipeline();

    // Add SSL handler first to encrypt and decrypt everything.
    // In this example, we use a bogus certificate in the server side
    // and accept any invalid certificates in the client side.
    // You will need something more complicated to identify both
    // and server in the real world.
    pipeline.addLast(sslCtx.newHandler(ch.alloc(), SecureChatClient.HOST, SecureChatClient.PORT));

    // On top of the SSL handler, add the text line codec.
    pipeline.addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
    pipeline.addLast(new StringDecoder());
    pipeline.addLast(new StringEncoder());

    // and then business logic.
    pipeline.addLast(new SecureChatClientHandler());
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
    EventLoopGroup group = new OioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group)
         .channel(RxtxChannel.class)
         .handler(new ChannelInitializer<RxtxChannel>() {
             @Override
             public void initChannel(RxtxChannel ch) throws Exception {
                 ch.pipeline().addLast(
                     new LineBasedFrameDecoder(32768),
                     new StringEncoder(),
                     new StringDecoder(),
                     new RxtxClientHandler()
                 );
             }
         });

        ChannelFuture f = b.connect(new RxtxDeviceAddress(PORT)).sync();

        f.channel().closeFuture().sync();
    } finally {
        group.shutdownGracefully();
    }
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
public static void service() throws Exception {
    ServerBootstrap bootstrap = new ServerBootstrap();
    bootstrap.group(bossGroup, workerGroup);
    bootstrap.channel(NioServerSocketChannel.class);
    bootstrap.childHandler(new ChannelInitializer<Channel>() {

        @Override
        protected void initChannel(Channel ch) throws Exception {
            ChannelPipeline pipeline = ch.pipeline();
            pipeline.addLast(new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4, 0, 4));
            pipeline.addLast(new LengthFieldPrepender(4));
            pipeline.addLast(new StringDecoder(CharsetUtil.UTF_8));
            pipeline.addLast(new StringEncoder(CharsetUtil.UTF_8));
            pipeline.addLast(new TcpServerHandler());
        }

    });
    ChannelFuture f = bootstrap.bind(IP, PORT).sync();
    f.channel().closeFuture().sync();
    System.out.println("TCP服務器已啟動");
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
/**
 * 初始化Bootstrap
 * @return
 */
public static final Bootstrap getBootstrap(){
	EventLoopGroup group = new NioEventLoopGroup();
	Bootstrap b = new Bootstrap();
	b.group(group).channel(NioSocketChannel.class);
	b.handler(new ChannelInitializer<Channel>() {
		@Override
		protected void initChannel(Channel ch) throws Exception {
			ChannelPipeline pipeline = ch.pipeline();
			pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4, 0, 4));
			pipeline.addLast("frameEncoder", new LengthFieldPrepender(4));
			pipeline.addLast("decoder", new StringDecoder(CharsetUtil.UTF_8));
			pipeline.addLast("encoder", new StringEncoder(CharsetUtil.UTF_8));
			pipeline.addLast("handler", new TcpClientHandler());
		}
	});
	b.option(ChannelOption.SO_KEEPALIVE, true);
	return b;
}
 

import io.netty.handler.codec.string.StringEncoder; //導入依賴的package包/類
protected static void run() throws Exception {
	ServerBootstrap b = new ServerBootstrap();
	b.group(bossGroup, workerGroup);
	b.channel(NioServerSocketChannel.class);
	b.childHandler(new ChannelInitializer<SocketChannel>() {
		@Override
		public void initChannel(SocketChannel ch) throws Exception {
			ChannelPipeline pipeline = ch.pipeline();
			pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4, 0, 4));
			pipeline.addLast("frameEncoder", new LengthFieldPrepender(4));
			pipeline.addLast("decoder", new StringDecoder(CharsetUtil.UTF_8));
			pipeline.addLast("encoder", new StringEncoder(CharsetUtil.UTF_8));
			pipeline.addLast(new TcpServerHandler());
		}
	});

	b.bind(IP, PORT).sync();
	System.out.println("TCP服務器已啟動");
}