我目前正在花时间将我的项目从Laravel4.2升级到Laravel5.2。在经历了很多麻烦之后，我设法让5.1版本正常运行，所以我开始了5.1到5.2的过程，如官方文档中所述:https://laravel.com/docs/5.2/upgrade#upgrade-5.2.0第一步之后，我的composer.json看起来像这样:"require":{"laravel/framework":"5.2.*","illuminate/html":"5.*","andywer/js-localization":"dev-laravel-5","laracasts/flash":"~1.0"