Question

我正在尝试在java中编写一个Web套接字服务器，独立一个，没有tomcat，glassfish等。客户端是用javascript编写的，但问题在于我认为服务器端，这里是代码：

public class Server {
public static void main(String[] args) throws IOException {
    ServerSocket server = new ServerSocket();
    server.bind(new InetSocketAddress("localhost", 1234));
    System.out.println("Listening for connection on port 1234...");
    while (true) {
        try {
            Socket socket = server.accept();
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            //PrintWriter out = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
            while(true) {
                String msg = in.readLine();
                if(msg != null) {
                    System.out.println(msg);
                }
            }

        } catch(Exception e) {
            e.printStackTrace();
        }
    }
}
}

这是javascript客户端只是为了完成的目的：

$(window).load(function() {

var port = 1234
var ws = new WebSocket("ws://localhost:"+ port);

ws.onopen = function(e) {
    console.log("open");
    //ws.send("Message to send");
    //console.log("Message is sent...");
};

ws.onmessage = function (e) { 
    var msg = e.data;
    console.log("received: " + msg);
};

ws.onclose = function() { 
    console.log("closed"); 
};

// Connection opened
ws.addEventListener('open', function (event) {
    ws.send('Hello Server!');
});

// Listen for messages
ws.addEventListener('message', function (event) {
    ws.log('Message from server ', event.data);
});

$("#send-btn").click(function() {
    var msg = $("#message").val()
    console.log(ws);
    console.log("sending: " + msg);
    ws.send(msg)
});

});

现在，只要我想将消息发送到服务器（点击事件），我就会得到这样的结果： Uncaught DOMException: Failed to execute 'send' on 'WebSocket': Still in CONNECTING state.

顺便建立连接时，我在服务器的控制台上获得以下信息：

GET / HTTP/1.1
Host: localhost:1234
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
Origin: file://
Sec-WebSocket-Version: 13
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.8,pl;q=0.6,fr;q=0.4
Sec-WebSocket-Key: 4xjnNYP9k7AUyXFU5LO42g==
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits

网上有这么多服务器，我做错了什么？我的猜测是握手可能出现问题，但我无法找到任何修复它的东西。谢谢你的帮助！

Java服务器javascript客户端websockets无法正常工作

0 个答案: