php - Composer install 实际上并没有安装库

Question

问题

这是一个奇怪的问题。我只是将它添加到我的 composer.json 文件中：

"maatwebsite/excel": "~2.1.0"

然而，当我运行时composer install，该库没有安装：

composer show | grep excel

什么都不返回。

所以每次我运行我的部署脚本时，我都会收到这个错误：

> php artisan clear-compiled
PHP Fatal error:  Uncaught Symfony\Component\Debug\Exception\FatalThrowableError: Class 'PHPExcel_Shared_Font' not found in /Users/Shared/dev/php/toters-api/config/excel.php:182
Stack trace:
#0 /Users/Shared/dev/php/toters-api/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/LoadConfiguration.php(60): require()
#1 /Users/Shared/dev/php/toters-api/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/LoadConfiguration.php(38): Illuminate\Foundation\Bootstrap\LoadConfiguration->loadConfigurationFiles(Object(Illuminate\Foundation\Application), Object(Illuminate\Config\Repository))
#2 /Users/Shared/dev/php/toters-api/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(203): Illuminate\Foundation\Bootstrap\LoadConfiguration->bootstrap(Object(Illuminate\Foundation\Application))
#3 /Users/Shared/dev/php/toters-api/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(267): Illuminate\Foundation\Application->bootstrapWith(Array)
#4 /Users/Shared/dev/php/toters-api/vendor/laravel/framew in /Users/Shared/dev/php/toters-api/config/excel.php on line 182

Fatal error: Uncaught Symfony\Component\Debug\Exception\FatalThrowableError: Class 'PHPExcel_Shared_Font' not found in /Users/Shared/dev/php/toters-api/config/excel.php on line 182

Symfony\Component\Debug\Exception\FatalThrowableError: Class 'PHPExcel_Shared_Font' not found in /Users/Shared/dev/php/toters-api/config/excel.php on line 182

这是一个预期的错误，因为 Composer 忽略了我的maatwebsite/excel库！

解决方法

我使用这些步骤来强制它工作：

rm -rf vendor
rm composer.lock
composer install --no-scripts

但这显然是一个丑陋且昂贵的 hack（我已将其添加为envoyer自动部署中的 pre-hook），它每次都有效，但它为自动部署过程增加了很多时间。

参考

• 我的composer.json文件
• 我的composer.lock文件

问题

我如何运行 Composer 命令来强制它工作（但我也必须避免使用该composer update命令，因为我不想在每次部署期间更新我的所有库，因为这会导致我的代码库发生不可预测的更新）

更新

我刚刚注意到我们版本上的这个库支持旧版本的 PHP - 这可能与它有关吗？

更新 2

运行composer require maatwebsite/excel返回以下内容：

composer require maatwebsite/excel
Using version ^3.0 for maatwebsite/excel
./composer.json has been updated
> php artisan clear-compiled
The compiled class file has been removed.
> php artisan ide-helper:generate
A new helper file was written to _ide_helper.php
Unexpected no document on Illuminate\Database\Eloquent\Model
Wrote expected docblock to /Users/Shared/dev/php/toters-api/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php
> php artisan ide-helper:models -N
Model information was written to _ide_helper_models.php
> php artisan optimize
Generating optimized class loader
The compiled class file has been removed.
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Conclusion: remove laravel/framework v5.3.31
    - Conclusion: don't install laravel/framework v5.3.31
    - maatwebsite/excel 3.0.1 requires illuminate/support ^5.5 -> satisfiable by illuminate/support[v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.2, v5.6.3, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9].
    - maatwebsite/excel 3.0.0 requires illuminate/support ^5.6 -> satisfiable by illuminate/support[v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.2, v5.6.3, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9].
    - don't install illuminate/support v5.5.0|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.16|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.17|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.2|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.28|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.33|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.34|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.35|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.36|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.37|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.39|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.5.40|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.6.0|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.6.1|don't install laravel/framework v5.3.31
    - illuminate/support v5.6.10 conflicts with laravel/framework[v5.3.31].
    - illuminate/support v5.6.11 conflicts with laravel/framework[v5.3.31].
    - illuminate/support v5.6.12 conflicts with laravel/framework[v5.3.31].
    - illuminate/support v5.6.13 conflicts with laravel/framework[v5.3.31].
    - illuminate/support v5.6.14 conflicts with laravel/framework[v5.3.31].
    - illuminate/support v5.6.15 conflicts with laravel/framework[v5.3.31].
    - don't install illuminate/support v5.6.2|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.6.3|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.6.4|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.6.5|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.6.6|don't install laravel/framework v5.3.31
    - don't install illuminate/support v5.6.7|don't install laravel/framework v5.3.31
    - illuminate/support v5.6.8 conflicts with laravel/framework[v5.3.31].
    - illuminate/support v5.6.9 conflicts with laravel/framework[v5.3.31].
    - Installation request for laravel/framework (locked at v5.3.31, required as 5.3.*) -> satisfiable by laravel/framework[v5.3.31].
    - Installation request for maatwebsite/excel ^3.0 -> satisfiable by maatwebsite/excel[3.0.0, 3.0.1].


Installation failed, reverting ./composer.json to its original content.

这是预期的，因为最新版本maatwebsite/excel需要 laravel 5.5+，

但是当我运行时composer require maatwebsite/excel:2.1，我仍然得到一个错误：

./composer.json has been updated
> php artisan clear-compiled
The compiled class file has been removed.
> php artisan ide-helper:generate
A new helper file was written to _ide_helper.php
Tag Exists: @mixin \Eloquent in Illuminate\Database\Eloquent\Model
Tag Exists: @mixin \Illuminate\Database\Eloquent\Builder in Illuminate\Database\Eloquent\Model
Tag Exists: @mixin \Illuminate\Database\Query\Builder in Illuminate\Database\Eloquent\Model
> php artisan ide-helper:models -N
Model information was written to _ide_helper_models.php
> php artisan optimize
Generating optimized class loader
The compiled class file has been removed.
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for maatwebsite/excel 2.1 -> satisfiable by maatwebsite/excel[v2.1.0].
    - Conclusion: remove laravel/framework v5.3.31
    - Conclusion: don't install laravel/framework v5.3.31
    - maatwebsite/excel v2.1.0 requires illuminate/filesystem 5.0.*|5.1.*|5.2.* -> satisfiable by illuminate/filesystem[v5.0.0, v5.0.22, v5.0.25, v5.0.26, v5.0.28, v5.0.33, v5.0.4, v5.1.1, v5.1.13, v5.1.16, v5.1.2, v5.1.20, v5.1.22, v5.1.25, v5.1.28, v5.1.30, v5.1.31, v5.1.41, v5.1.6, v5.1.8, v5.2.0, v5.2.19, v5.2.21, v5.2.24, v5.2.25, v5.2.26, v5.2.27, v5.2.28, v5.2.31, v5.2.32, v5.2.37, v5.2.43, v5.2.45, v5.2.6, v5.2.7].
    - don't install illuminate/filesystem v5.0.0|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.0.22|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.0.25|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.0.26|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.0.28|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.0.33|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.0.4|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.1|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.13|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.16|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.2|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.20|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.22|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.25|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.28|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.30|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.31|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.41|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.6|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.1.8|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.0|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.19|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.21|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.24|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.25|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.26|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.27|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.28|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.31|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.32|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.37|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.43|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.45|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.6|don't install laravel/framework v5.3.31
    - don't install illuminate/filesystem v5.2.7|don't install laravel/framework v5.3.31
    - Installation request for laravel/framework (locked at v5.3.31, required as 5.3.*) -> satisfiable by laravel/framework[v5.3.31].


Installation failed, reverting ./composer.json to its original content.

这很奇怪，因为它应该支持 Laravel 5.3（我的 Laravel）：

但我的 PHP 版本是 7.1。

Answer 1

composer install不像npm install。我很确定如果您手动添加一个包，就像您所做的那样，它会被忽略，就像composer.lock已经存在的那样。

• 这样做composer update会奏效。
• 或通过执行添加包composer require maatwebsite/excel
• 或删除composer.lock然后运行composer install

编辑：

composer require maatwebsite/excel将尝试安装该软件包的最新版本，但因为您正在使用laraval v5.3.31您应该安装maatwebsite/excel ~2.1.0。第 3 版适用于laraval ^5.5

• composer require "maatwebsite/excel:~2.1.0"

Answer 2

永远永远永远永远不会删除 composer.lock - 除非你真的明白这意味着什么并且愿意承担后果。

您只需调用以下命令即可安装：

composer require maatwebsite/excel:~2.1

然后安装版本 2.1.27。

关于您的“错误”消息只需几句话。那里说 maatwebsite/excel v2.1.0 需要Illumination/filesystem 5.0.*|5.1.*|5.2.*。这个包被相同版本的 laravel 取代（你可以在 composer.lock 中“阅读”这个）。但是你使用的是 laravel 5.3.31 ergo 存在版本冲突。但是来自 maatwebsite/excel 的更新版本与更多版本的Illuminate/*兼容。

Answer 3

composer require and that package name在您的情况下，您可以尝试

composer require maatwebsite/excel