SocketChannel 使用原理

Question

最近写的程序里,与服务器通讯的地方,无法控制key.isReadable(),key.isWritable()的值!想知道SocketChannel 使用的原理!忙烦下各位朋友!谢谢

Answer 1

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主【jianglihua1986】截止到2008-07-24 09:49:13的历史汇总数据(不包括此帖)：
发帖的总数量:0                        发帖的总分数:0                        每贴平均分数:0                        
回帖的总数量:0                        得分贴总数量:0                        回帖的得分率:0%                       
结贴的总数量:0                        结贴的总分数:0                        
无满意结贴数:0                        无满意结贴分:0                        
未结的帖子数:0                        未结的总分数:0                        
结贴的百分比:---------------------结分的百分比:---------------------
无满意结贴率:---------------------无满意结分率:---------------------
如何结贴请参考这里：http://topic.csdn.net/u/20080501/09/ef7ba1b3-6466-49f6-9d92-36fe6d471dd1.html

Answer 2

key好像是注册你要监听的事件的，注册时要指明监听的状态，就有accept read wirte之类的上面的函数应该就是判断这个的吧。

Answer 3

谢谢!
"key好像是注册你要监听的事件的，注册时要指明监听的状态，就有accept read wirte之类的上面的函数应该就是判断这个的吧。"有点不太明白这句"注册时要指明监听的状态"能否有时间给解释下!谢谢!
我的通讯方法是:
 public void talk() { //实力化
        System.out.println("进入通讯状态了" + doWithConnect.getFlag());
        if (doWithConnect.getFlag()) {
            selector = doWithConnect.getSelector();
            socketChannel = doWithConnect.getSocketChannel();
            try {
                socketChannel.register(selector,
                                       SelectionKey.OP_READ |
                                       SelectionKey.OP_WRITE);
            } catch (ClosedChannelException ex1) {
                ex1.printStackTrace();
            }
            try {
                while (selector.select() > 0) {
                    Set readyKeys = selector.selectedKeys();
                    Iterator it = readyKeys.iterator();
                    while (it.hasNext()) {
                        key = null;
                        try {
                            key = (SelectionKey) it.next();
                            it.remove();
                            if (key.isReadable()) {
                                receive(key);
                            }
                            if (key.isWritable()) {
                                if (keepTable.getSendCommList().size() > 0) {
                                    send(key);
                                    if (k == 0) {
                                        timer.schedule(new MyTask(), 0, 5000);
                                        System.out.println("开始启动同步命令");
                                    }
                                    k++;                                } else {
                                    return;
                                }
                            }                        } catch (IOException e) {
                            e.printStackTrace();
                            try {
                                if (key != null) {
                                    key.cancel();
                                    key.channel().close();
                                }
                            } catch (Exception ex) {
                                ex.printStackTrace();
                            }
                            return ;
                        }                    }                }
            } catch (IOException ex2) {
                ex2.printStackTrace();
            }        } else {
            return;
        }
    }
希望能根据代码指明下!呵呵...