D:laravelcomposer>composer install

Composer-Repositorys mit Paketinformationen laden

安装不成功

  [ComposerDownloaderTransportException]                                                                                         

  Ihre Konfiguration erlaubt keine Verbindungen zu http://packagist.phpcomposer.com/packages .json. Weitere Informationen finden Sie unter https://getcomposer.org/doc/06-config.md#secure-http.

install [--prefer-source] [--prefer-dist] [--dry- run] [--dev] [--no-dev] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest ] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--ignore-platform-reqs] [ --] [<Pakete>]...