zoukankan html css js c++ java

使用websocket实现单聊和多聊

单聊:

　　前端:

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta http-equiv="content-Type" charset="UTF-8">
    <meta http-equiv="x-ua-compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Title</title>
</head>
<body>
<p>您的昵称：<input type="text" id="nick"><button onclick="openws()">进入聊天室</button></p>
<p>给<input type="text" id="to_user">发送：<input type="text" id="message"><button onclick="send_msg()">发送消息</button></p>
<div id="msg_list" style=" 500px;">

</div>
</body>
<script type="application/javascript">
    var ws = null;
    // ws.onopen = function(){
    //   alert("欢迎来到群喷");
    // };

    function openws(){
        var nick = document.getElementById("nick").value;
        ws = new WebSocket("ws://192.168.12.10:5000/ws/"+nick);
        ws.onmessage = function (ws_status) {
            console.log(ws_status.data);
            var msg_obj = JSON.parse(ws_status.data);
            var ptag = document.createElement("p");
            ptag.innerText = msg_obj.from_user + " : " +msg_obj.msg;
            document.getElementById("msg_list").appendChild(ptag);
        };
    }

    function send_msg() {
        var msg = document.getElementById("message").value;
        var from_user = document.getElementById("nick").value;
        var to_user = document.getElementById("to_user").value;
        var ptag = document.createElement("p");
        ptag.style.cssText = "text-align: right;";
        ptag.innerText = msg + " : "+ from_user;
        document.getElementById("msg_list").appendChild(ptag);
        var msg_obj = {
            msg:msg,
            from_user:from_user,
            to_user:to_user
        };
        ws.send(JSON.stringify(msg_obj));
    };

</script>
</html>

　　后端:

from flask import Flask,request,render_template
from geventwebsocket.handler import WebSocketHandler
from gevent.pywsgi import WSGIServer
import json


from geventwebsocket.websocket import WebSocket

app = Flask(__name__)
user_socket_dict = {

}

@app.route('/ws/<user>')
def ws(user):
    user_socket = request.environ.get('wsgi.websocket')  #原请求
    if user_socket:
        user_socket_dict[user] = user_socket

    while 1:
        msg = user_socket.receive()
        msg_dict = json.loads(msg)
        to_usocket = user_socket_dict.get(msg_dict.get("to_user"))
        to_usocket.send(json.dumps({"from_user": user, "to_user": msg_dict.get("to_user"), "msg": msg_dict.get("msg")}))

@app.route("/")
def index():
    return render_template("ws_one.html")

if __name__ == '__main__':
    # app.run("0.0.0.0",5000,debug=True)
    http_serv = WSGIServer(("0.0.0.0", 5000), app, handler_class=WebSocketHandler)
    http_serv.serve_forever()

多聊:

　　前端

<!DOCTYPE html>
<html lang="zn-CN">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="x-ua-compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Title</title>
</head>
<body>
    <p>发送内容: <input type="text" id="message"> <button onclick="send_msg()">发送消息</button></p>
    <div id="msg_list" style=" 500px"></div>
</body>

<script type="application/javascript">
    var ws = new WebSocket("ws://192.168.12.10:5000/ws");
    // ws.onopen = function(){                //当打开的时候发送消息
    //     ws.send('hello')
    // };
    ws.onmessage = function (ws_status) {
        console.log(ws_status.data);
        var ptag = document.createElement('p');
        ptag.innerText = ws_status.data;
        document.getElementById('msg_list').appendChild(ptag)
    };
    function send_msg() {
        var msg = document.getElementById('message').value;
        var ptag = document.createElement('p');
        ptag.style.cssText = 'text-align:right;';
        ptag.innerText = msg;
        document.getElementById('msg_list').appendChild(ptag)
        ws.send(msg)
    }

</script>
</html>

　　后端:

from flask import Flask,request,render_template
from geventwebsocket.handler import WebSocketHandler
from gevent.pywsgi import WSGIServer
from geventwebsocket.websocket import WebSocket

app = Flask(__name__)

user_socker_list = []
@app.route('/ws')
def ws():
    user_socker = request.environ.get('wsgi.websocket')  #type:WebSocket
    if user_socker:
        user_socker_list.append(user_socker)
    print(len(user_socker_list), user_socker_list)
    while 1:
        msg = user_socker.receive()
        print(msg)
        for usocker in user_socker_list:
            if user_socker == usocker:
                continue
            try:
                usocker.send(msg)
            except:
                continue
@app.route('/')
def index():
    return render_template('ws_all.html')



if __name__ == '__main__':
    # app.run(debug=True)
    http_serv = WSGIServer(("0.0.0.0",5000),app,handler_class=WebSocketHandler)
    http_serv.serve_forever()

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原文地址：https://www.cnblogs.com/ITdong-1/p/10189563.html