我正在尝试在Windows 10计算机上升级Symfony。目前的版本是3.2。我已将composer.json包更新为"symfony/symfony": "3.4.*"。然后我运行composer update symfony/symfony并收到以下错误消息：
The requested package symfony/symfony 3.4.* exists as symfony/symfony[v3.2.2] but these are rejected by your constraint.
任何想法可能是什么问题？谢谢！
以下是composer.json文件：
{
"name": "martin/editor",
"license": "proprietary",
"type": "project",
"autoload": {
"psr-4": {
"": "src/"
},
"classmap": [
"app/AppKernel.php",
"app/AppCache.php"
]
},
"autoload-dev": {
"psr-4": {
"Tests\\": "tests/"
}
},
"require": {
"php": ">=5.5.9",
"symfony/symfony": "3.4.*",
"doctrine/orm": "^2.5",
"doctrine/doctrine-bundle": "^1.6",
"doctrine/doctrine-cache-bundle": "^1.2",
"symfony/swiftmailer-bundle": "^2.3.10",
"symfony/monolog-bundle": "^3.0.2",
"symfony/polyfill-apcu": "^1.0",
"sensio/distribution-bundle": "^5.0",
"sensio/framework-extra-bundle": "^3.0.2",
"incenteev/composer-parameter-handler": "^2.0",
"mikehaertl/php-shellcommand": ">=1.2.4",
"phpoffice/phpspreadsheet": "*"
},
"require-dev": {
"sensio/generator-bundle": "^3.0",
"symfony/phpunit-bridge": "^3.0"
},
"scripts": {
"symfony-scripts": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
],
"post-install-cmd": [
"@symfony-scripts"
],
"post-update-cmd": [
"@symfony-scripts"
]
},
"extra": {
"symfony-app-dir": "app",
"symfony-bin-dir": "bin",
"symfony-var-dir": "var",
"symfony-web-dir": "web",
"symfony-tests-dir": "tests",
"symfony-assets-install": "relative",
"incenteev-parameters": {
"file": "app/config/parameters.yml"
},
"branch-alias": null
},
"repositories": [{
"type": "composer",
"url": "https:\/\/www.phpclasses.org\/"
}, {
"packagist": false
}, {
"type": "vcs",
"url": "https://github.com/mikehaertl/php-shellcommand"
}, {
"type": "vcs",
"url": "https://github.com/PHPOffice/PhpSpreadsheet"
}, {
"type": "vcs",
"url": "https://github.com/php-fig/simple-cache"
}
]
}