棘轮基本聊天应用程序给出错误"需要打开失败"

Question

我正在尝试使用Ratchet库来使用位于http://socketo.me/的 WebSockets,但是在Ubuntu中从命令行运行服务器脚本时遇到了一些问题.

在成功安装了composer和Ratchet之后,我正在http://socketo.me/docs/hello-world上按照基本聊天应用程序的教程进行操作,我正在运行它.我的文件结构,其中websockets是我的项目文件夹,是:

kingsconflict
   websockets
      chat.php
      chat-server.php
      composer.json
      vendor
         autoload.php
         (dependecies included by composer for Ratchet)

输入"sudo php chat-server.php"时出现的错误是"PHP致命错误:require():无法打开所需的'/var/www/kingsconflict/vendor/autoload.php'(include_path ='.:/ usr/share/php:/ usr/share/pear')在/var/www/kingsconflict/websockets/chat-server.php第5行".好像它正在尝试打开/var/www/kingsconflict/vendor/autoload.php,但实际的路径是/var/www/kingsconflict/websockets/vendor/autoload.php,我不知道为什么会这样做.

聊天server.php

<?php
use Ratchet\Server\IoServer;
use MyApp\Chat;

    require dirname(__DIR__) . '/vendor/autoload.php';    // Error here

    $server = IoServer::factory(
        new Chat()
      , 8080
    );

    $server->run();

我尝试使用下面的行修改错误的行,并且我停止收到错误但是我收到一个新错误"PHP致命错误:类'MyApp\Chat'未找到"这导致我相信此修复不正确.

require ('./vendor/autoload.php');

其他文件的代码与Ratchet教程中显示的相同,但万一我将在下面发布

chat.php

<?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})\n";
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        $numRecv = count($this->clients) - 1;
        echo sprintf('Connection %d sending message "%s" to %d other connection%s' . "\n"
            , $from->resourceId, $msg, $numRecv, $numRecv == 1 ? '' : 's');

        foreach ($this->clients as $client) {
            if ($from !== $client) {
                // The sender is not the receiver, send to each client connected
                $client->send($msg);
            }
        }
    }

    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\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        echo "An error has occurred: {$e->getMessage()}\n";

        $conn->close();
    }
}

composer.json

{
    "autoload": {
        "psr-0": {
            "MyApp": "src"
        }
    },
    "require": {
        "cboden/Ratchet": "0.2.*"
    }
}

autoload.php(没有编辑这个但是到底是什么)

<?php

// autoload.php generated by Composer

require_once __DIR__ . '/composer' . '/autoload_real.php';

return ComposerAutoloaderInit0964ef3a5e66723368300f04c3206ca1::getLoader();

Answer 1

假设你的composer.json是

{
    "autoload": {
        "psr-0": {
            "MyApp": "src"
        }
    },
    "require": {
        "cboden/Ratchet": "0.3.*"
    }
}

在启动bin/chat-server.php之前,您必须使用以下命令更新自动加载文件:

$ composer.phar update

Answer 2

您的问题是您的文件结构.仔细阅读教程会发现您的聊天类应该在/src/MyApp/Chat.php中,而您的服务器脚本应该在/bin/chat-server.php中.