因此,需要检查返回的 SocketChannel 是否是 null.如: SocketChannel SocketChannel 介绍 Java NIO 中的 SocketChannel 是一个连接到...从这里可以看出: SocketChannel 是用来连接 Socket 套接字 SocketChannel 主要用途用来处理网络 I/O 的通道 SocketChannel 是基于 TCP 连接传输 SocketChannel... 方式一: SocketChannel socketChannel = SocketChannel.open(new InetSocketAddress("www.baidu.com"...连接校验 socketChannel.isOpen(); // 测试 SocketChannel 是否为 open 状态 socketChannel.isConnected(); //测试 SocketChannel...是否已经被连接 socketChannel.isConnectionPending(); //测试 SocketChannel 是否正在进行连接 socketChannel.finishConnect
java中SocketChannel是什么 1、说明 SocketChannel代表套接字通道,实例是通过其静态方法创建的。...SocketChannel是SelectableChannel的子类,假如没有配置阻塞模式,那么SocketChannel对象默认为阻塞模式,那么open(SocketAddressremote)的方法实际上就是阻塞打开服务器连接...而SocketChannel上的任何I/O操作都是阻塞的。...2、实例 public static SocketChannel open() throws IOException { return SelectorProvider.provider... IOException { // 1. ceate socket channel SocketChannel sc = open(); try
有两种方式创建SocketChannel: 打开SocketChannel然后连接到互联网上的服务器。...一个新的连接到达ServerSocketChannel时,会创建一个SocketChannel 打开SocketChannel 下面是打开SocketChannel的例子: SocketChannel...80)); 关闭SocketChannel 调用SocketChannel.close()方法后,会关闭SocketChannel,例如: socketChannel.close(); 从SocketChannel...(buf); 先分配一个Buffer,然后调用SocketChannel.read(),将SocketChannel中的数据读到Buffer中。...往SocketChannel中写 调用SocketChannel.Write()方法往SocketChannel中写入数据,以一个Buffer作为参数,例如: String newData = "New
有关TCP协议的:ServerSocketChannel、SocketChannel。...在ServerSocketChannle和SocketChannel上提供了register方法来实现注册,通过SelectionKey来实现选择。...socketChannel = (SocketChannel) selectionKey.channel(); buffer.clear(); int count = 0; // 当有数据可读时...; } if (count < 0) { socketChannel.close(); } } /** * 向通道中写入数据。...4.2CONNECT的非阻塞验证 public static void main(String[] args) throws IOException { SocketChannel sc = SocketChannel.open
NIO学习 Socket 通道 ServerSocketChannel 代码演示 ServerSocketChannel相关函数讲解 SocketChannel SocketChannel 特征 SocketChannel...因此,需要检查返回的SocketChannel 是否是 null.如: SocketChannel Java NIO 中的 SocketChannel 是一个连接到 TCP 网络套接字的通道。...的使用 (1)创建 SocketChannel 方式一: SocketChannel socketChannel = SocketChannel.open(new InetSocketAddress...(2)连接校验 socketChannel.isOpen(); // 测试 SocketChannel 是否为 open 状态 socketChannel.isConnected(); //测试 SocketChannel...(4)读写 SocketChannel socketChannel = SocketChannel.open( new InetSocketAddress("www.baidu.com", 80));
ServerBootstrap 中 , 会设置 ChannelInitializer , 在与客户端的连接建立成功后 , 会回调 initChannel 方法 , 此时就会得到该客户端连接对应的通道 SocketChannel...childHandler( // 为 WorkerGroup 线程池对应的 NioEventLoop 设置对应的事件 处理器 Handler new ChannelInitializer() {// 创建通道初始化对象 @Override protected void initChannel(SocketChannel
可以通过以下2种方式创建SocketChannel: 打开一个SocketChannel并连接到互联网上的某台服务器。...打开 SocketChannel 下面是SocketChannel的打开方式: SocketChannel socketChannel = SocketChannel.open(); socketChannel.connect...()关闭SocketChannel: socketChannel.close(); 从 SocketChannel 读取数据 要从SocketChannel中读取数据,调用一个read()的方法之一。...从SocketChannel读取到的数据将会放到这个Buffer中。 然后,调用SocketChannel.read()。该方法将数据从SocketChannel 读到Buffer中。...写入 SocketChannel 写数据到SocketChannel用的是SocketChannel.write()方法,该方法以一个Buffer作为参数。
有两个办法可以来建立SocketChannel 打开了 SocketChannel 连接到了网络上的一个服务 传入了 ServerSocketChannel 连接 打开 SocketChannel SocketChannel...socketChannel = SocketChannel.open(); socketChannel.connect(new InetSocketAddress("http://tutorials.jenkov.com...", 80)); 关闭 SocketChannel 使用完毕后需要关闭Channel socketChannel.close(); 从SocketChannel读取数据 通过调用read()方法来读取数据...socketChannel.configureBlocking(false); socketChannel.connect(new InetSocketAddress("http://jenkov.com...参考 Java NIO SocketChannel
可通过如下方式创建SocketChannel: 打开一个SocketChannel,并连接到网络上的某台服务器 一个新连接到达ServerSocketChannel时,会创建一个SocketChannel...打开 SocketChannel 下面是SocketChannel的打开方式的简单用法: SocketChannel socketChannel = SocketChannel.open(); socketChannel.connect...当用完SocketChannel之后调用SocketChannel.close()关闭SocketChannel: socketChannel.close(); 从 SocketChannel 读取数据...从SocketChannel读取到的数据将会放到这个Buffer中。 然后,调用SocketChannel.read()。该方法将数据从SocketChannel 读到Buffer中。...写入 SocketChannel 写数据到SocketChannel用的是SocketChannel.write(),该方法以一个Buffer作为参数。
SocketChannel在java中实现客户端 1、步骤 (1)创建SocketChannel实例,并将其配置为非阻塞模式,只有在SocketChannel实例中,任何I/O操作都是非阻塞的。...NonBlockingTCPClient { public static void main(String[] args) { byte[] data = "hello".getBytes(); SocketChannel... channel = null; try { // 1. open a socket channel channel = SocketChannel.open... } catch (IOException e) { e.printStackTrace(); } } } } 以上就是SocketChannel
本文链接:https://blog.csdn.net/luo4105/article/details/73650414 SocketChannel SocketChannel是一个连接到tcp网络套接字的通道...SocketChannel connctClient = server.accept(); 创建SocketChannel 通过SocketChannel.Open()方法创建通道,open()方法可以传入连接对象的参数...SocketChannel socketChannel = SocketChannel.open(); socketChannel.connect(new InetSocketAddress("192.168.1.107...socketChannel.close(); socketChannel接收信息 可以通过read()方法把通道数据读到缓存中。...获得连接 通过accept()方法,获得socket连接 SocketChannel socketChannel = server.accept(); 发送数据和接收数据都通过SocketChannel
static void join(SocketChannel socketChannel) { // 有人加入就给他分配一个id,本文来源于公从号“彤哥读源码” String...); } /** * 退出群聊 * @param socketChannel */ static void quit(SocketChannel socketChannel...) { String userId = USER_MAP.get(socketChannel); send(socketChannel, "您退出了群聊" + "\n\r")...; USER_MAP.remove(socketChannel); for (SocketChannel channel : USER_MAP.keySet()) {...propagate(SocketChannel socketChannel, String content) { String userId = USER_MAP.get(socketChannel
socketChannel = null; try { socketChannel = serverSocketChannel.accept()...socketChannel; public Handler(SocketChannel socketChannel) { this.socketChannel = socketChannel...; public class blockedClient { private SocketChannel socketChannel = null; public blockedClient...socketChannel = (SocketChannel) key.channel(); ByteBuffer readBuff = ByteBuffer.allocate(32)...socketChannel = (SocketChannel) key.channel(); socketChannel.read(receiveBuffer); receiveBuffer.flip
socketChannel = SocketChannel.open(new InetSocketAddress("127.0.0.1", 2022)); // 读取信息 D:\\bizhi...(1024); while (socketChannel.read(byteBuffer) !...socketChannel = SocketChannel.open(new InetSocketAddress("127.0.0.1", 2020)); // 设置为非阻塞模式...socketChannel = serverSocketChannel.accept(); socketChannel.configureBlocking(false...if (key.isReadable()) { // 从选择器中获取通道 SocketChannel socketChannel
建立连接代码实现: // 初始化 socket,建立 socket 与 channel 的绑定关系 SocketChannel socketChannel = SocketChannel.open();...SocketChannel socketChannel = SocketChannel.open(); SocketAddress remote = new InetSocketAddress(host...这里采用了以 SocketChannel 主动注册到选择器的方式进行关联绑定,这也就解释了,为什么不直接 newSocket(),而是以 SocketChannel的方式来创建 socket。...{ // 获取事件句柄对应的 SocketChannel SocketChannel channel = (SocketChannel) key.channel(); // 真正的完成...socketChannel = SocketChannel.open(); socketChannel.socket().setSoTimeout(5000); SocketAddress
socketChannel = serverSocketChannel.accept(); //do something with socketChannel......如下面的例子: while(true){ SocketChannel socketChannel = serverSocketChannel.accept();...//do something with socketChannel... } 当然,也可以在while循环中使用除了true以外的其它退出准则。...socketChannel = serverSocketChannel.accept(); if(socketChannel !...= null){ //do something with socketChannel... } } ?
SocketChannel SocketChannel 用于建立 TCP 网络连接,类似 java.net.Socket。...socketChannel = SocketChannel.open(); socketChannel.configureBlocking(false); socketChannel.connect...if (socketChannel !...(1024); while (socketChannel.isOpen() && socketChannel.read(requestBuffer) !...socketChannel = serverSocketChannel.accept(); if (socketChannel !
具体细节 在处理连接(Accpet事件)时: 将SocketChannel存入HashSet; 以SocketChannel的HashCode作为Key来存储连接时间(以服务器时间为准...(以服务器时间为准); 处理读取事件 ---- 开启一个定时反复运行的管理线程,每次运行对HashSet中的SocketChannel进行轮询,并以SocketChannel的HashCode...对象,并关闭SocketChannel。 ...socketChannel = channel.accept(); logger.info("接收到一个新的连接请求"+ socketChannel.getRemoteAddress...socketChannel=iterator.next(); Boolean removeFlag=handleSocket(socketChannel);
>() { @Override protected void initChannel(SocketChannel...socketChannel) throws Exception { //设置特殊分隔符...socketChannel) throws Exception { //设置特殊分隔符...socketChannel.pipeline().addLast(new FixedLengthFrameDecoder(5)); socketChannel.pipeline...socketChannel) throws Exception { socketChannel.pipeline().addLast(new FixedLengthFrameDecoder
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