Composer/Laravel:如何添加/更新特定包

Question

如何使用composer添加/更新特定包？我正在使用最新的Laravel,不确定它是否重要,但任何有助于确定答案的东西.

我也从我找到的旧Stackoverflow帖子中尝试了以下内容,但它对我不起作用.它将包附加到composer.json,然后继续更新所有内容.以下是链接:如何使用Composer更新单个库？

这是我试图添加到我的项目的包:https://github.com/barryvdh/laravel-dompdf

非常感谢您的时间和帮助!

编辑:

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要求和更新不起作用他们也更新一切.我错误地运行命令有可能吗？在作曲家方面,我仍然是绿色的耳朵:S

$ composer require barryvdh/laravel-dompdf
lease provide a version constraint for the barryvdh/laravel-dompdf requirement: *
/composer.json has been updated
oading composer repositories with package information
pdating dependencies (including require-dev)
 - Removing orchestra/testbench (v2.1.1)
 - Removing symfony/security (v2.4.3)
 - Removing symfony/translation (v2.4.3)
 - Installing symfony/translation (v2.4.6)
   Loading from cache

 - Removing symfony/http-foundation (v2.4.3)
 - Installing symfony/http-foundation (v2.4.6)
   Loading from cache

 - Removing symfony/event-dispatcher (v2.4.3)
 - Installing symfony/event-dispatcher (v2.5.0)
   Loading from cache

 - Removing symfony/debug (v2.4.3)
 - Installing symfony/debug (v2.4.6)
   Loading from cache

 - Removing symfony/http-kernel (v2.4.3)
 - Installing symfony/http-kernel (v2.4.6)
   Loading from cache

 - Removing symfony/routing (v2.4.3)
 - Installing symfony/routing (v2.4.6)
   Loading from cache

 - Removing symfony/process (v2.4.3)
 - Installing symfony/process (v2.4.6)
   Loading from cache

 - Removing symfony/finder (v2.4.3)
 - Installing symfony/finder (v2.4.6)
   Loading from cache

 - Removing symfony/dom-crawler (v2.4.3)
 - Installing symfony/dom-crawler (v2.4.6)
   Loading from cache

 - Removing symfony/css-selector (v2.4.3)
 - Installing symfony/css-selector (v2.4.6)
   Loading from cache

 - Removing symfony/console (v2.4.3)
 - Installing symfony/console (v2.4.6)
   Loading from cache

 - Removing symfony/browser-kit (v2.4.3)
 - Installing symfony/browser-kit (v2.4.6)
   Loading from cache

 - Removing swiftmailer/swiftmailer (v5.1.0)
 - Installing swiftmailer/swiftmailer (v5.2.0)
   Loading from cache

 - Removing stack/builder (v1.0.1)
 - Installing stack/builder (v1.0.2)
   Loading from cache

  - Removing patchwork/utf8 (v1.1.21)
  - Installing patchwork/utf8 (v1.1.23)
    Loading from cache

  - Removing nesbot/carbon (1.8.0)
  - Installing nesbot/carbon (1.9.0)
    Loading from cache

  - Removing monolog/monolog (1.9.0)
  - Installing monolog/monolog (1.10.0)
    Loading from cache

  - Removing symfony/filesystem (v2.4.3)
  - Installing symfony/filesystem (v2.5.0)
    Loading from cache

  - Installing symfony/security-core (v2.4.6)
    Loading from cache

  - Removing laravel/framework (v4.1.28)
  - Installing laravel/framework (v4.1.30)
    Loading from cache

  - Removing chumper/datatable (2.2.2)
  - Installing chumper/datatable (2.3)
    Loading from cache

  - Removing ivaynberg/select2 (3.4.6)
  - Installing ivaynberg/select2 (3.4.8)
    Loading from cache

  - Installing phenx/php-font-lib (0.2.2)
    Loading from cache

  - Installing dompdf/dompdf (v0.6.1)
    Loading from cache

  - Installing barryvdh/laravel-dompdf (v0.3.1)
    Loading from cache

symfony/security-core suggests installing symfony/validator (For using the user password constraint)
symfony/security-core suggests installing symfony/expression-language (For using the expression voter)
Generating autoload files
Compiling component files
Generating optimized class loader

Answer 1

我尝试了以下内容,它似乎对我有用.

您必须先添加barryvdh/laravel-dompdf到该composer.json文件.然后执行以下操作:

 composer update barryvdh/laravel-dompdf --lock

Answer 2

这里

composer update barryvdh/laravel-dompdf

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