laravel执行php artisan migrate报错的解决方法

报错一$phpartisanmigrateIlluminate\Database\QueryException:couldnotfinddriver(SQL:select*frominformation_schema.table

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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