我正在尝试使用 WebSocket 进行聊天。为此，我使用 Ratchet。
为此，我使用 Ratchet 的指南: http://socketo.me/docs/hello-world
我的问题是，发送消息后，页面会重新加载，而没有任何代码实现。
index.html:
<html> <!-- index.html -->
<head>
</head>
<body>
<h1>Menu</h1>
<h2>Create a chat server on port 8080</h2>
<button><a href="chat-server.php">Here</a></button>
<hr>
<h2>Join the chat server on port 8080</h2>
<button><a href="chat-client.php">Here</a></button>
<p>You'll have an error if it doesn't exist !</p>
</body>
</html>
连接.js:
var conn;
function init(){
console.log("function : init");
conn = new WebSocket('ws://localhost:8080');
console.log(conn);
conn.onopen = function(e) {
var co = document.getElementById("connection");
co.innerHTML="Connection established !";
};
conn.onmessage = function(e) {
var content = document.getElementById("chat");
content.innerHTML = content.innerHTML + "<li>"+ e.data+"</li>";
};
conn.onclose = function(){
var co = document.getElementById("connection");
co.innerHTML="Connection closed !";
}
conn.onerror = function(){
alert("Connection failed : There in no server on this port !");
}
}
function closeCon(){
conn.close();
}
function sendMessage(){
var mes = document.getElementById("message").value;
conn.send(mes, function(event){
event.preventDefault();
console.log(event);
} );
}
聊天客户端.php:
<html><!-- chat-client.php -->
<head>
<script src="../js/connection.js"></script>
</head>
<body onload="init()">
<h1>Chat in web browser</h1>
<p id="connection"> Connection closed !</p>
<div>
<ul id="chat">
</ul>
<form>
<input id="message" style="border: 1;">
<button onclick="sendMessage()">Send</button>
</form>
</div>
<hr>
<button onclick="closeCon()"><a href="index.html">Back to the menu</a></button>
</body>
</html>
聊天服务器.php:
<h1>Welcome on your server on port 8080</h1>
<?php
use Ratchet\Server\IoServer;
use Ratchet\Http\HttpServer;
use Ratchet\WebSocket\WsServer;
use MyApp\Chat;
// cd /Applications/MAMP/htdocs/MyRatchetFirstApp/
require dirname(__DIR__) . '/vendor/autoload.php';
$server = IoServer::factory(
new HttpServer(
new WsServer(
new Chat()
)
),
8080
);
$server->run();
聊天.php:
<?php //Chat.php
namespace MyApp;
use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;
class Chat implements MessageComponentInterface {
protected $clients;
public function __construct() {
$this->clients = new \SplObjectStorage;
}
public function onOpen(ConnectionInterface $conn) {
// Store the new connection to send messages to later
$this->clients->attach($conn);
echo "New connection! ({$conn->resourceId})<br/>";
}
public function onMessage(ConnectionInterface $from, $msg) {
$numRecv = count($this->clients) - 1;
foreach ($this->clients as $client) {
if ($from !== $client) {
// The sender is not the receiver, send to each client connected
$client->send($msg);
}
}
echo sprintf('Connection %d sending message "%s" to %d other connection%s' . "<br/>", $from->resourceId, $msg, $numRecv, $numRecv == 1 ? '' : 's');
}
public function onClose(ConnectionInterface $conn) {
// The connection is closed, remove it, as we can no longer send it messages
$this->clients->detach($conn);
echo "Connection {$conn->resourceId} has disconnected<br/>";
}
public function onError(ConnectionInterface $conn, \Exception $e) {
echo "An error has occurred: {$e->getMessage()}<br/>";
$conn->close();
}
}
composer.json:
{
"autoload": {
"psr-0": {
"MyApp": "src"
}
},
"require": {
"cboden/ratchet": "0.3.*"
}
}
最后，这里是 tree of this project
最佳答案
这只是表单中发送消息的按钮。然后当我“提交”它时，它刷新了页面。如果您想了解帖子的历史记录，则应该删除此表单。
关于javascript - 为什么我的 WebSocket 客户端总是在发送消息后重新加载？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37164712/