php - 为什么我在将 Symfony 4 应用程序部署到 Heroku 时遇到问题?
问题描述
我正在尝试将我的 Symfony 4 应用程序部署到 Heroku,显然遇到了一些问题。
我第一次遇到“403 Forbidden”错误,因为我的 Procfile 中没有设置文档根目录。我对此的回答是,在阅读了我可以找到的其他问题和答案之后,使用以下任何一种:
web: $(composer config bin-dir)/heroku-php-apache2 public/
web: bin/heroku-php-apache2 public/
web: vendor/bin/heroku-php-apache2 public/
web: vendor/bin/heroku-php-apache2 /public/
他们都回馈了不同类型的“500 内部服务器错误”页面——其中大多数是这样说的Request exceeded the limit of 10 internal redirects due to probable configuration error.
这让我开始思考我的public/.htaccess
文件中的一些问题。
删除评论后,它看起来像这样:
# Use the front controller as index file. It serves as a fallback solution when
# every other rewrite/redirect fails (e.g. in an aliased environment without
# mod_rewrite). Additionally, this reduces the matching process for the
# start page (path "/") because otherwise Apache will apply the rewriting rules
# to each configured DirectoryIndex file (e.g. index.php, index.html, index.pl).
DirectoryIndex app.php
# By default, Apache does not evaluate symbolic links if you did not enable this
# feature in your server configuration. Uncomment the following line if you
# install assets as symlinks or if you experience problems related to symlinks
# when compiling LESS/Sass/CoffeScript assets.
# Options FollowSymlinks
# Disabling MultiViews prevents unwanted negotiation, e.g. "/app" should not resolve
# to the front controller "/app.php" but be rewritten to "/app.php/app".
<IfModule mod_negotiation.c>
Options -MultiViews
</IfModule>
<IfModule mod_rewrite.c>
RewriteEngine On
# Determine the RewriteBase automatically and set it as environment variable.
# If you are using Apache aliases to do mass virtual hosting or installed the
# project in a subdirectory, the base path will be prepended to allow proper
# resolution of the app.php file and to redirect to the correct URI. It will
# work in environments without path prefix as well, providing a safe, one-size
# fits all solution. But as you do not need it in this case, you can comment
# the following 2 lines to eliminate the overhead.
RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
RewriteRule ^(.*) - [E=BASE:%1]
# Sets the HTTP_AUTHORIZATION header removed by Apache
RewriteCond %{HTTP:Authorization} .
RewriteRule ^ - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
# Redirect to URI without front controller to prevent duplicate content
# (with and without `/app.php`). Only do this redirect on the initial
# rewrite by Apache and not on subsequent cycles. Otherwise we would get an
# endless redirect loop (request -> rewrite to front controller ->
# redirect -> request -> ...).
# So in case you get a "too many redirects" error or you always get redirected
# to the start page because your Apache does not expose the REDIRECT_STATUS
# environment variable, you have 2 choices:
# - disable this feature by commenting the following 2 lines or
# - use Apache >= 2.3.9 and replace all L flags by END flags and remove the
# following RewriteCond (best solution)
RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteRule ^app\.php(?:/(.*)|$) %{ENV:BASE}/$1 [R=301,L]
# If the requested filename exists, simply serve it.
# We only want to let Apache serve files and not directories.
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule ^ - [L]
# Rewrite all other queries to the front controller.
RewriteRule ^ %{ENV:BASE}/app.php [L]
</IfModule>
<IfModule !mod_rewrite.c>
<IfModule mod_alias.c>
# When mod_rewrite is not available, we instruct a temporary redirect of
# the start page to the front controller explicitly so that the website
# and the generated links can still be used.
RedirectMatch 302 ^/$ /app.php/
# RedirectTemp cannot be used instead
</IfModule>
</IfModule>
这确实很奇怪,因为我没有public/app.php
文件 - 但是,将其交换为 index.php 似乎也无法解决问题。
我真的不知道还能尝试什么,非常感谢您的帮助。
解决方案
就我而言,我没有添加路线“/”。Symfony 在没有该路由的本地环境中加载默认页面,但在 heroku 中我们需要添加它!
我显示我的代码供您参考:
class DefaultController extends AbstractController
{
/**
* @Route("/", name="default")
*/
public function ping()
{
return $this->json([
'message' => 'pong'
]);
}
}
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