如何使用快速路由？

php url-routing

2022-08-30 21:01:01

我正在尝试使用 FastRoute 路由库，但无法使简单的用法示例正常工作。

以下是在 GitHub 页面上找到的基本用法示例：

<?php

require '/path/to/vendor/autoload.php';

$dispatcher = FastRoute\simpleDispatcher(function(FastRoute\RouteCollector $r) {
    $r->addRoute('GET', '/users', 'get_all_users_handler');
    // {id} must be a number (\d+)
    $r->addRoute('GET', '/user/{id:\d+}', 'get_user_handler');
    // The /{title} suffix is optional
    $r->addRoute('GET', '/articles/{id:\d+}[/{title}]', 'get_article_handler');
});

// Fetch method and URI from somewhere
$httpMethod = $_SERVER['REQUEST_METHOD'];
$uri = $_SERVER['REQUEST_URI'];

// Strip query string (?foo=bar) and decode URI
if (false !== $pos = strpos($uri, '?')) {
    $uri = substr($uri, 0, $pos);
}
$uri = rawurldecode($uri);

$routeInfo = $dispatcher->dispatch($httpMethod, $uri);
switch ($routeInfo[0]) {
    case FastRoute\Dispatcher::NOT_FOUND:
        // ... 404 Not Found
        break;
    case FastRoute\Dispatcher::METHOD_NOT_ALLOWED:
        $allowedMethods = $routeInfo[1];
        // ... 405 Method Not Allowed
        break;
    case FastRoute\Dispatcher::FOUND:
        $handler = $routeInfo[1];
        $vars = $routeInfo[2];
        // ... call $handler with $vars
        break;
}

其中注释为“...用$vars呼叫$handler，我尝试过返回，但它不起作用。call_user_func_array($handler, $vars)

我还认为也许是.htaccess文件阻止了它的工作，因为Github页面没有该项目的.htaccess文件示例。我正在使用这个：

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . index.php [QSA,L]

我还尝试调用具有闭包作为处理程序的路由，如下所示：

$r->addRoute('GET', '/', function() {
    echo 'home';
});

答案 1

如何处理请求的示例

$r->addRoute('GET', '/users', User::class . '/getUsers');

然后，如果找到调度程序，您可以按如下方式处理它

case FastRoute\Dispatcher::FOUND:
    $handler = $routeInfo[1];
    $vars = $routeInfo[2];        
    list($class, $method) = explode("/", $handler, 2);
    call_user_func_array(array(new $class, $method), $vars);
    
    break;

不要忘记使用方法创建类。UsergetUsers()

答案 2

我制作了一个使用FastRoute和PHP-DI（依赖注入）的演示API来展示如何使用两者。请参见：https://github.com/tochix/shapes-api/blob/master/src/Service/Http/Router.php#L94。简而言之，它看起来像这样：

/**
 * @param string $requestMethod
 * @param string $requestUri
 * @param Dispatcher $dispatcher
 * @throws DependencyException
 * @throws NotFoundException
 */
private function dispatch(string $requestMethod, string $requestUri, Dispatcher $dispatcher)
{
    $routeInfo = $dispatcher->dispatch($requestMethod, $requestUri);

    switch ($routeInfo[0]) {
        case Dispatcher::NOT_FOUND:
            $this->getRequest()->sendNotFoundHeader();
            break;
        case Dispatcher::METHOD_NOT_ALLOWED:
            $this->getRequest()->sendMethodNotAllowedHeader();
            break;
        case Dispatcher::FOUND:
            list($state, $handler, $vars) = $routeInfo;
            list($class, $method) = explode(static::HANDLER_DELIMITER, $handler, 2);

            $controller = $this->getContainer()->get($class);
            $controller->{$method}(...array_values($vars));
            unset($state);
            break;
    }
}