将遗留项目迁移到 Symfony 路由问题

Question

我正在尝试开始将我的遗留项目一点一点地迁移到 Symfony（Strangler 应用程序）。我关注了 this documentation，但我只能加载我的遗留应用程序的主页 URL /。其他 URL 甚至在我到达 LegacyBridge class.

之前就会给我一个 404

我错过了什么？

编辑：
可能人们不明白我的问题。我在开始我的 Symfony 项目时没有遇到任何问题。我正在尝试构建一个 Strangler 应用程序，慢慢地将我的遗留代码迁移到 Symfony。所以我的遗留代码和 Symfony 应用程序运行并排。但是一切都是通过 Symfony 的前端控制器加载的。

所以我从 Symfony public/index.php 修改了 index.php。

我在 Symfony 的前端控制器中添加了一个 LegacyBridge class：

<?php
// public/index.php
use App\Kernel;
use App\LegacyBridge;
use Symfony\Component\Debug\Debug;
use Symfony\Component\HttpFoundation\Request;

require dirname(__DIR__).'/config/bootstrap.php';

/*
 * The kernel will always be available globally, allowing you to
 * access it from your existing application and through it the
 * service container. This allows for introducing new features in
 * the existing application.
 */
global $kernel;

if ($_SERVER['APP_DEBUG']) {
    umask(0000);

    Debug::enable();
}

if ($trustedProxies = $_SERVER['TRUSTED_PROXIES'] ?? $_ENV['TRUSTED_PROXIES'] ?? false) {
    Request::setTrustedProxies(explode(',', $trustedProxies), Request::HEADER_X_FORWARDED_ALL ^ Request::HEADER_X_FORWARDED_HOST);
}

if ($trustedHosts = $_SERVER['TRUSTED_HOSTS'] ?? $_ENV['TRUSTED_HOSTS'] ?? false) {
    Request::setTrustedHosts([$trustedHosts]);
}

$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
$request = Request::createFromGlobals();
$response = $kernel->handle($request);

/*
 * LegacyBridge will take care of figuring out whether to boot up the
 * existing application or to send the Symfony response back to the client.
 */
$scriptFile = LegacyBridge::prepareLegacyScript($request, $response, __DIR__);
if ($scriptFile !== null) {
    require $scriptFile;
} else {
    $response->send();
}
$kernel->terminate($request, $response);

我已经在线收到 404 $response = $kernel->handle($request);。

<?php
//src/LegacyBridge.php

namespace App;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

class LegacyBridge
{
    public static function prepareLegacyScript(Request $request, Response $response, string $publicDirectory)
    {

        // If Symfony successfully handled the route, you do not have to do anything.
        if (false === $response->isNotFound()) {
            return;
        }

        // Figure out how to map to the needed script file
        // from the existing application and possibly (re-)set
        // some env vars.

        $dir = $request->server->get('SERVER_NAME');
        $dir = str_replace('.test', '.nl', $dir);

        $legacyScriptFilename = realpath($publicDirectory . '/../../' . $dir . '/index.php');

        return $legacyScriptFilename;
    }
}

Answer 1

404 响应应该在您提到的行上生成（如预期的那样）但直到 else 才发送下面的块：

$scriptFile = LegacyBridge::prepareLegacyScript($request, $response, __DIR__);
if ($scriptFile !== null) {
    require $scriptFile;
} else {
    $response->send();
}

这意味着 $scriptFile 为空。因此，在您的 LegacyBridge 中添加以下内容以调试路径：

$legacyScriptFilename = realpath($publicDirectory . '/../../' . $dir . '/index.php');

// next two lines for debug
var_dump($legacyScriptFilename);
die();

return $legacyScriptFilename;

这将转储 $legacyScriptFilename 并终止进一步执行，因此您可以验证路径是否正确。

如果您遇到未捕获的 Exception 尝试捕获并抑制它，如下所示：

try {
  $response = $kernel->handle($request);
} catch (\Exception $e) {
  $response = new Response(); 
  $response->setStatusCode(404);
}

尽管有异常，这应该允许执行继续。

将遗留项目迁移到 Symfony 路由问题

Migrating legacy project to Symfony routing issues

php

symfony

symfony-routing