Question

首先,我承认我是新鲜事,我很可能被遗忘在某个地方选择正确的变量,但我的Googling却失败了我,我不知道要做什么,因此我希望得到一些帮助。

我以安全Chat的例子为基础,可以在这里找到:

@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
    // Convert the message to a string
    String request = (String) e.getMessage();

    System.out.println("Message recieved: " + request);

    if (request.equalsIgnoreCase("clients")) {
        channels.write("We currently have: " + channels.size() + " clients");
    } else if (request.toLowerCase().equals("koko"))
        for (Channel c : channels) {
            if (c == e.getChannel())
                c.write("HELLO WORLD");
        }
    else {
        // Then send it to all channels, but the current one.
        for (Channel c : channels)
            if (c != e.getChannel())
                c.write("[" + e.getChannel().getRemoteAddress() + "] " + request + "
");
            else
                c.write("[you] " + request + "
");

    }

    if (request.equalsIgnoreCase("bye"))
        e.getChannel().close();
}

如果我发出一个正常的信息,即广播,一切都会奏效。但是,如果我发出指挥,如<clients或,那么我就得不到回应,直到我再次进入并发出空洞信息。首先,我得到回复。

C:Device ManagerApplication ServerExamp lesSecureChatSecureChatClientin>java -jar client.jar 127.0.0.1 8080 UNKNOWN SERVER CERTIFICATE: CN=securechat.example.netty.gleamynode.net, OU=Contr ibutors, O=The Netty Project, L=Seongnam-si, ST=Kyunggi-do, C=KR Welcome to Electus secure chat service! Your session is protected by TLS_DHE_RSA_WITH_AES_128_CBC_SHA cipher suite You are the 1th user koko<ENTER> <PRESS ENTER AGAIN> HELLO WORLD[you] clients<ENTER> <AND ENTER ONCE AGAIN> We currently have: 1 clients[you]

我不理解,不希望的是,进入纽顿两度。这似乎非常不合逻辑,令人不快。在Telnet Example,我没有问题。

感谢你时间。

Regards, Aldrian.

Answer 1

这是你仅挑出一个小小细节,并评估一切的羞辱时代之一。

if (request.equalsIgnoreCase("clients")) {
    channels.write("We currently have: " + channels.size() + " clients /n"); // Forgot /n here
} else if (request.toLowerCase().equals("koko"))
    for (Channel c : channels) {
        if (c == e.getChannel())
            c.write("HELLO WORLD /n"); // <- Forgot /n here as well
    }

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