因此，我的PC上安装了新的新laravel。我安装了“ chatter”，这是laravel的论坛软件包，在我的项目中，我有laravel的身份验证系统。
我尝试迁移，但是出现错误：
[2019-01-03 09:55:14] local.ERROR: SQLSTATE[42S01]: Base table or view already exists: 1050 Table 'users' already exists (SQL: create table `users` (`id` int unsigned not null auto_increment primary key, `name` varchar(255) not null, `email` varchar(255) not null, `email_verified_at` timestamp null, `password` varchar(255) not null, `remember_token` varchar(100) null, `created_at` timestamp null, `updated_at` timestamp null) default character set utf8mb4 collate 'utf8mb4_unicode_ci') {"exception":"[object] (Illuminate\\Database\\QueryException(code: 42S01): SQLSTATE[42S01]: Base table or view already exists: 1050 Table 'users' already exists (SQL: create table `users` (`id` int unsigned not null auto_increment primary key, `name` varchar(255) not null, `email` varchar(255) not null, `email_verified_at` timestamp null, `password` varchar(255) not null, `remember_token` varchar(100) null, `created_at` timestamp null, `updated_at` timestamp null) default character set utf8mb4 collate 'utf8mb4_unicode_ci') at C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Connection.php:664, PDOException(code: 42S01): SQLSTATE[42S01]: Base table or view already exists: 1050 Table 'users' already exists at C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Connection.php:458)
[stacktrace]
#0 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Connection.php(624): Illuminate\\Database\\Connection->runQueryCallback('create table `u...', Array, Object(Closure))
#1 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Connection.php(459): Illuminate\\Database\\Connection->run('create table `u...', Array, Object(Closure))
#2 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Schema\\Blueprint.php(97): Illuminate\\Database\\Connection->statement('create table `u...')
#3 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Schema\\Builder.php(264): Illuminate\\Database\\Schema\\Blueprint->build(Object(Illuminate\\Database\\MySqlConnection), Object(Illuminate\\Database\\Schema\\Grammars\\MySqlGrammar))
#4 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Schema\\Builder.php(165): Illuminate\\Database\\Schema\\Builder->build(Object(Illuminate\\Database\\Schema\\Blueprint))
#5 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Support\\Facades\\Facade.php(237): Illuminate\\Database\\Schema\\Builder->create('users', Object(Closure))
#6 C:\\xampp\\htdocs\\GrandSchool\\database\\migrations\\2014_10_12_000000_create_users_table.php(24): Illuminate\\Support\\Facades\\Facade::__callStatic('create', Array)
#7 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Migrations\\Migrator.php(360): CreateUsersTable->up()
#8 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Migrations\\Migrator.php(367): Illuminate\\Database\\Migrations\\Migrator->Illuminate\\Database\\Migrations\\{closure}()
#9 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Migrations\\Migrator.php(178): Illuminate\\Database\\Migrations\\Migrator->runMigration(Object(CreateUsersTable), 'up')
#10 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Migrations\\Migrator.php(147): Illuminate\\Database\\Migrations\\Migrator->runUp('C:\\\\xampp\\\\htdocs...', 1, false)
#11 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Migrations\\Migrator.php(96): Illuminate\\Database\\Migrations\\Migrator->runPending(Array, Array)
#12 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Console\\Migrations\\MigrateCommand.php(71): Illuminate\\Database\\Migrations\\Migrator->run(Array, Array)
#13 [internal function]: Illuminate\\Database\\Console\\Migrations\\MigrateCommand->handle()
#14 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\BoundMethod.php(29): call_user_func_array(Array, Array)
#15 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\BoundMethod.php(87): Illuminate\\Container\\BoundMethod::Illuminate\\Container\\{closure}()
#16 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\BoundMethod.php(31): Illuminate\\Container\\BoundMethod::callBoundMethod(Object(Illuminate\\Foundation\\Application), Array, Object(Closure))
#17 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php(572): Illuminate\\Container\\BoundMethod::call(Object(Illuminate\\Foundation\\Application), Array, Array, NULL)
#18 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Console\\Command.php(183): Illuminate\\Container\\Container->call(Array)
#19 C:\\xampp\\htdocs\\GrandSchool\\vendor\\symfony\\console\\Command\\Command.php(255): Illuminate\\Console\\Command->execute(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Illuminate\\Console\\OutputStyle))
#20 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Console\\Command.php(170): Symfony\\Component\\Console\\Command\\Command->run(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Illuminate\\Console\\OutputStyle))
#21 C:\\xampp\\htdocs\\GrandSchool\\vendor\\symfony\\console\\Application.php(901): Illuminate\\Console\\Command->run(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))
#22 C:\\xampp\\htdocs\\GrandSchool\\vendor\\symfony\\console\\Application.php(262): Symfony\\Component\\Console\\Application->doRunCommand(Object(Illuminate\\Database\\Console\\Migrations\\MigrateCommand), Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))
#23 C:\\xampp\\htdocs\\GrandSchool\\vendor\\symfony\\console\\Application.php(145): Symfony\\Component\\Console\\Application->doRun(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))
#24 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Console\\Application.php(89): Symfony\\Component\\Console\\Application->run(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))
#25 C:\\xampp\\htdocs\\GrandSchool\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Console\\Kernel.php(122): Illuminate\\Console\\Application->run(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))
#26 C:\\xampp\\htdocs\\GrandSchool\\artisan(37): Illuminate\\Foundation\\Console\\Kernel->handle(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))
#27 {main}
"}
答案 0 :(得分：1)
尝试在迁移之前先删除所有表：
php artisan migrate:fresh --seed
或
php artisan migrate:fresh
答案 1 :(得分：1)
您需要从数据库中删除 users表表，还需要从 migrations 表中删除用户条目。
之后，要运行所有未完成的迁移，请执行migration Artisan命令：php artisan migrate
另一个解决方案是：migrate:refresh命令将回滚所有迁移，然后执行migrate命令。该命令有效地重新创建了整个数据库：
php artisan migrate:refresh
// Refresh the database and run all database seeds...
php artisan migrate:refresh --seed
答案 2 :(得分：0)
尝试一次
php artisan migrate:fresh
或在运行偏头痛之前截断迁移表