我正在尝试安装 laravel 6 pdf 包“composer 需要 barryvdh/laravel-dompdf”

Question

我正在尝试作曲家需要 barryvdh/laravel-dompdf。 但我得到：

E:\wamp64\www\laravel\Bugler>composer require barryvdh/laravel-dompdf
You are running Composer with SSL/TLS protection disabled.
The "https://repo.packagist.org/packages.json" file could not be downloaded: php_network_getaddresses: getaddrinfo failed: No such host is known.
failed to open stream: php_network_getaddresses: getaddrinfo failed: No such host is known.
https://repo.packagist.org could not be fully loaded, package information was loaded from the local cache and may be out of date

[Composer\Downloader\TransportException]
  The "https://repo.packagist.org/p/barryvdh/laravel-dompdf%24121356f3b13be1ea852a1b1d7ee643fe8af75206dd35d9e62998d63
  5a75f929c.json" file could not be downloaded: php_network_getaddresses: getaddrinfo failed: No such host is known.
  failed to open stream: php_network_getaddresses: getaddrinfo failed: No such host is known.

require [--dev] [--prefer-source] [--prefer-dist] [--fixed] [--no-progress] [--no-suggest] [--no-update] [--no-scripts] [--update-no-dev] [--update-with-dependencies] [--update-with-all-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--] [<packages>]...

谁能帮我？ 我也尝试解决这个问题。

php artisan cache:clear

php artisan config:cache

Answer 1

删除项目目录中的composer.lock文件并运行以下命令：

composer install

或者您可以尝试运行以下命令：

composer require barryvdh/laravel-dompdf:0.8.2 

Answer 2

Composer github repository已经列出了类似的问题

出现此问题是由于不正确的代理配置。 检查您的代理配置。

此外，如果您正在使用任何防病毒软件，请禁用它并重试

https://github.com/composer/composer/issues/6891