想用SPRING MVC,NODE.JS EXPRESS,TORNADO实现同一个功能，开阔一下视野。
先来TORNADO的吧。。
客户端代码都差不多，主要是服务端代码。
TORNADO的说法：
http://www.tornadoweb.org/en/stable/websocket.html
Override on_message to handle incoming messages, and use write_message to send messages to the client. You can also override open and on_close to handle opened and closed connections.
websocket事件说法：
https://html.spec.whatwg.org/multipage/comms.html#network
服务端代码：
import tornado.web
import tornado.websocket
import tornado.httpserver
import tornado.ioloop
class WebSocketHandler(tornado.websocket.WebSocketHandler):
def open(self):
pass
def on_message(self, message):
self.write_message(u"Your message was: " + message)
print message
self.write_message(u"hahhahahah")
def on_close(self):
pass
class IndexPageHandler(tornado.web.RequestHandler):
def get(self):
self.render("websockets.html")
class Application(tornado.web.Application):
def __init__(self):
handlers = [
(r'/', IndexPageHandler),
(r'/ws', WebSocketHandler)
]
settings = {
'template_path': 'static'
}
tornado.web.Application.__init__(self, handlers, **settings)
if __name__ == '__main__':
ws_app = Application()
server = tornado.httpserver.HTTPServer(ws_app)
server.listen(8888)
tornado.ioloop.IOLoop.instance().start()
js代码：
<title>Tornado WebSockets</title>
<strong>Message to Send:</strong> <input type="text" id="msg" maxlength="25">
<input type="button" onclick="sendMsg();" value="Send">
<script type="text/javascript">
function sendMsg() {
if ("WebSocket" in window) {
var ws = new WebSocket("ws://localhost:8888/ws");
ws.onopen = function() {
ws.send("Hello, world");
};
ws.onmessage = function (evt) {
alert(evt.data);
};
}
}
</script>
样子：
