laravel框架 执行迁移”php artisan migrate”操作时报错失败的解决方法

Laravel版本：v7.25.0

故障报错的截图：

故障报错的描述：

D:\phpstudy_pro\WWW\test002> php artisan migrate
Migration table created successfully.
Migrating: 2014_10_12_000000_create_users_table

   Illuminate\Database\QueryException

  SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes (SQL: alter table `users` add unique `users_email_unique`(`email`))

  at D:\phpstudy_pro\WWW\test002\vendor\laravel\framework\src\Illuminate\Database\Connection.php:671
    667|         // If an exception occurs when attempting to run a query, we'll format the error
    668|         // message to include the bindings with SQL, which will make this exception a
    669|         // lot more helpful to the developer instead of just the database's errors.
    670|         catch (Exception $e) {
  > 671|             throw new QueryException(
    672|                 $query, $this->prepareBindings($bindings), $e
    673|             );
    674|         }
    675|

  1   D:\phpstudy_pro\WWW\test002\vendor\laravel\framework\src\Illuminate\Database\Connection.php:464
      PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes")

  2   D:\phpstudy_pro\WWW\test002\vendor\laravel\framework\src\Illuminate\Database\Connection.php:464
      PDOStatement::execute()

原因分析：

搜索该错误，首先尝试了这个方法：MySQL版本低于5.7.7，所以会有这个报错，但实际我更换为MySQL 8后依然存在同样故障报错。
排除这个原因，按报错信息来理解，什么值超过限制的最大值，所以尝试了以下方法，得以解决。
正确方法：修改 \app\Providers\AppServiceProvider.php 文件增加下方标记的2行代码

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Schema;      //增加了这一行命名空间代码

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Schema::defaultStringLength(191);   //增加这一行给 boot方法 增加一个默认值
    }
}

保存后，再次执行 php artisan migrate ，成功执行迁移操作！