laravel执行php artisan migrate报错的解决方法

报错一

$ php artisan migrate

 Illuminate\Database\QueryException : could not find driver (SQL: select * fr
om information_schema.tables where table_schema = dev_oms and table_name = migra
tions)

 at D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connection.
php:664
 660|   // If an exception occurs when attempting to run a query, we'll
 format the error
 661|   // message to include the bindings with SQL, which will make th
is exception a
 662|   // lot more helpful to the developer instead of just the databa
se's errors.
 663|   catch (Exception $e) {
 > 664|    throw new QueryException(
 665|     $query, $this->prepareBindings($bindings), $e
 666|    );
 667|   }
 668|

 Exception trace:

 1 PDOException::("could not find driver")
  D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connectors
\Connector.php:68

 2 PDO::__construct("mysql:host=127.0.0.1;port=3306;dbname=dev_oms", "root",
"root", [])
  D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connectors
\Connector.php:68

 Please use the argument -v to see more details.

原因是php.ini 扩展"php_pdo_mysql.dll"没开启

报错二

$ php artisan migrate
Migration table created successfully.

 Illuminate\Database\QueryException : SQLSTATE[42000]: Syntax error or access
 violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: a
lter table `users` add unique `users_email_unique`(`email`))

 at D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connection.
php:664
 660|   // If an exception occurs when attempting to run a query, we'll
 format the error
 661|   // message to include the bindings with SQL, which will make th
is exception a
 662|   // lot more helpful to the developer instead of just the databa
se's errors.
 663|   catch (Exception $e) {
 > 664|    throw new QueryException(
 665|     $query, $this->prepareBindings($bindings), $e
 666|    );
 667|   }
 668|
 Exception trace:
 1 PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1071 Sp
ecified key was too long; max key length is 767 bytes")
  D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connection
.php:458
 2 PDOStatement::execute()
  D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connection
.php:458
 Please use the argument -v to see more details.

数据库编码改为utf8mb4

报错三

$ php artisan migrate
Migration table created successfully.

 Illuminate\Database\QueryException : SQLSTATE[42000]: Syntax error or access
 violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: a
lter table `users` add unique `users_email_unique`(`email`))

 at D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connection.
php:664
 660|   // If an exception occurs when attempting to run a query, we'll
 format the error
 661|   // message to include the bindings with SQL, which will make th
is exception a
 662|   // lot more helpful to the developer instead of just the databa
se's errors.
 663|   catch (Exception $e) {
 > 664|    throw new QueryException(
 665|     $query, $this->prepareBindings($bindings), $e
 666|    );
 667|   }
 668|
 Exception trace:
 1 PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1071 Sp
ecified key was too long; max key length is 767 bytes")
  D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connection
.php:458
 2 PDOStatement::execute()
  D:\WWW\dev_oms\vendor\laravel\framework\src\Illuminate\Database\Connection
.php:458
 Please use the argument -v to see more details.

加上两行代码即可

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