laravel5.*运行migrate命令报错1071 Specified key was too long解决方案

laravel5.5使用passport运行migrate命令出现Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytesLaravel错误。

Laravel 5.5默认使用utf8mb4字符编码，而不是之前的utf8编码。因此运行php artisan migrate会出现如下错误：

解决办法

找到app\Providers\AppServiceProvider.php文件夹：

# 引入Schema
use Illuminate\Support\Facades\Schema;

# 在boot中添加
Schema::defaultStringLength(191);

完整例子为：

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Schema;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        //
        Schema::defaultStringLength(191);
    }

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