我是Symfony2的新手，现在已经工作了将近3周 事情进展顺利，但我在每个页面都有4个弃用的警告，需要教条进行交互（映射是通过yaml文件完成的），无论实际使用的是什么。
将文件名传递给的能力 自版本以来，不推荐使用Symfony \ Component \ Yaml \ Yaml :: parse方法 2.2并将在3.0中删除。传递文件的YAML内容。 （4次）
我不知道自己做错了什么，或者如果某个地方出现问题，我可以解决这个问题。
感谢您的帮助！
以防万一，这里是完整的堆栈跟踪：
Yaml::parse() (called from YamlDriver.php at line 712)
YamlDriver::loadMappingFile() (called from FileDriver.php at line 115)
FileDriver::getElement() (called from YamlDriver.php at line 55)
YamlDriver::loadMetadataForClass() (called from MappingDriverChain.php at line 102)
MappingDriverChain::loadMetadataForClass() (called from ClassMetadataFactory.php at line 116)
ClassMetadataFactory::doLoadMetadata() (called from AbstractClassMetadataFactory.php at line 332)
AbstractClassMetadataFactory::loadMetadata() (called from AbstractClassMetadataFactory.php at line 216)
AbstractClassMetadataFactory::getMetadataFor() (called from EntityManager.php at line 265)
EntityManager::getClassMetadata() (called from DefaultRepositoryFactory.php at line 67)
DefaultRepositoryFactory::createRepository() (called from DefaultRepositoryFactory.php at line 50)
DefaultRepositoryFactory::getRepository() (called from EntityManager.php at line 665)
EntityManager::getRepository() (called from UserManager.php at line 40)
UserManager::__construct() (called from appDevDebugProjectContainer.php at line 1582)
appDevDebugProjectContainer::getFosUser_UserManagerService() (called from Container.php at line 312)
Container::get() (called from appDevDebugProjectContainer.php at line 3632)
appDevDebugProjectContainer::getFosUser_UserProvider_UsernameService() (called from Container.php at line 312)
Container::get() (called from appDevDebugProjectContainer.php at line 3690)
appDevDebugProjectContainer::getSecurity_Authentication_ManagerService() (called from Container.php at line 312)
Container::get() (called from appDevDebugProjectContainer.php at line 2299)
appDevDebugProjectContainer::getSecurity_Firewall_Map_Context_MainService() (called from Container.php at line 312)
Container::get() (called from classes.php at line 2964)
FirewallMap::getListeners() (called from classes.php at line 2606)
Firewall::onKernelRequest()
call_user_func() (called from WrappedListener.php at line 61)
WrappedListener::__invoke()
call_user_func() (called from classes.php at line 1853)
EventDispatcher::doDispatch() (called from classes.php at line 1771)
EventDispatcher::dispatch() (called from TraceableEventDispatcher.php at line 132)
TraceableEventDispatcher::dispatch() (called from HttpKernel.php at line 120)
HttpKernel::handleRaw() (called from HttpKernel.php at line 62)
HttpKernel::handle() (called from ContainerAwareHttpKernel.php at line 69)
ContainerAwareHttpKernel::handle() (called from Kernel.php at line 185)
Kernel::handle() (called from app_dev.php at line 30)
如果需要，composer.phar show --installed
doctrine/annotations v1.2.7 Docblock Annotations Parser
doctrine/cache v1.5.4 Caching library offering an object-oriented API for many cache backends
doctrine/collections v1.3.0 Collections Abstraction library
doctrine/common v2.5.3 Common Library for Doctrine projects
doctrine/dbal v2.5.4 Database Abstraction Layer
doctrine/doctrine-bundle 1.6.2 Symfony DoctrineBundle
doctrine/doctrine-cache-bundle 1.3.0 Symfony Bundle for Doctrine Cache
doctrine/inflector v1.1.0 Common String Manipulations with regard to casing and singular/plural rules.
doctrine/lexer v1.0.1 Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.
doctrine/orm v2.4.8 Object-Relational-Mapper for PHP
friendsofsymfony/user-bundle v1.3.6 Symfony FOSUserBundle
incenteev/composer-parameter-handler v2.1.2 Composer script handling your ignored parameter file
ircmaxell/password-compat v1.0.4 A compatibility library for the proposed simplified password hashing algorithm: https://wiki.php.net/rfc/password_hash
jdorn/sql-formatter v1.2.17 a PHP SQL highlighting library
monolog/monolog 1.17.2 Sends your logs to files, sockets, inboxes, databases and various web services
paragonie/random_compat v1.2.0 PHP 5.x polyfill for random_bytes() and random_int() from PHP 7
psr/log 1.0.0 Common interface for logging libraries
sensio/distribution-bundle v5.0.4 Base bundle for Symfony Distributions
sensio/framework-extra-bundle v3.0.13 This bundle provides a way to configure your controllers with annotations
sensio/generator-bundle v3.0.5 This bundle generates code for you
sensiolabs/security-checker v3.0.2 A security checker for your composer.lock
swiftmailer/swiftmailer v5.4.1 Swiftmailer, free feature-rich PHP mailer
symfony/monolog-bundle v2.8.2 Symfony MonologBundle
symfony/phpunit-bridge v2.8.2 Symfony PHPUnit Bridge
symfony/polyfill-intl-icu v1.1.0 Symfony polyfill for intl's ICU-related data and classes
symfony/polyfill-mbstring v1.1.0 Symfony polyfill for the Mbstring extension
symfony/polyfill-php54 v1.1.0 Symfony polyfill backporting some PHP 5.4+ features to lower PHP versions
symfony/polyfill-php55 v1.1.0 Symfony polyfill backporting some PHP 5.5+ features to lower PHP versions
symfony/polyfill-php56 v1.1.0 Symfony polyfill backporting some PHP 5.6+ features to lower PHP versions
symfony/polyfill-php70 v1.1.0 Symfony polyfill backporting some PHP 7.0+ features to lower PHP versions
symfony/polyfill-util v1.1.0 Symfony utilities for portability of PHP codes
symfony/security-acl v2.8.0 Symfony Security Component - ACL (Access Control List)
symfony/swiftmailer-bundle v2.3.11 Symfony SwiftmailerBundle
symfony/symfony v2.8.2 The Symfony PHP framework
twig/twig v1.24.0 Twig, the flexible, fast, and secure template language for PHP
修改
正如所建议的，在遇到一些依赖性问题后，我将Doctrine升级到了2.5。
现在我只有2个通知，关于来自安全的内容，我目前正在处理的内容，基于一个已弃用的教程。评论错误的线条通知消失。万岁！
答案 0 :(得分：2)
根据Cerad的建议，我通过编辑composer.json并运行composer update升级到Doctrine 2.5。
这会产生新的通知，但与我以不赞成使用的方式编写的安全内容有关，很容易修复。
对于遇到同样问题的人，请小心你的composer.json，Doctrine 2.5需要php 5.4，有些config.platform.php对我来说设置为5.3.9，这阻止了更新。如果要升级，也要编辑它。
答案 1 :(得分：0)
已删除将文件名传递给Yaml :: parse（）的功能。 之前：Yaml :: parse（$ fileName）; 之后：Yaml :: parse（file_get_contents（$ fileName））;
源： https://github.com/symfony/symfony/blob/master/UPGRADE-3.0.md#yaml
可能你没有使用明确的Yaml :: parse。在您想要升级到3.0之前，这不是问题。如果您愿意，除了依赖项（可能是doctrine-bridge）所涵盖的更改之外。如果不是，你应该坚持使用2.7 LTS版本的Symfony。
我刚刚检查过2.8也是LTS。我不确定有什么区别。