~~~ 在根目录下的/config/database.php文件中配置： 'connections' => [ 'sqlite' => [ 'driver' => 'sqlite', 'url' => env('DATABASE_URL'), 'database' => env('DB_DATABASE', database_path('database.sqlite')), 'prefix' => '', 'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true), ], 'mysql' => [ 'driver' => 'mysql', 'url' => env('DATABASE_URL'), 'host' => env('DB_HOST', '127.0.0.1'), 'port' => env('DB_PORT', '3306'), 'database' => env('DB_DATABASE', 'mysystem'), 'username' => env('DB_USERNAME', 'root'), 'password' => env('DB_PASSWORD', 'root123'), 'unix_socket' => env('DB_SOCKET', ''), 'charset' => 'utf8mb4', 'collation' => 'utf8mb4_unicode_ci', 'prefix' => 'sys_', 'prefix_indexes' => true, 'strict' => true, 'engine' => null, 'options' => extension_loaded('pdo_mysql') ? array_filter([ PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'), ]) : [], ], // 第二个数据库 'mysql2' => [ 'driver' => 'mysql', 'host' => env('DB_HOST', '127.0.0.1'), 'port' => env('DB_PORT_BASE', '3306'), 'database' => env('DB_DATABASE_BASE', 'mysystem'), 'username' => env('DB_USERNAME_BASE', 'root'), 'password' => env('DB_PASSWORD_BASE', 'root123'), 'unix_socket' => env('DB_SOCKET', ''), 'charset' => 'utf8mb4', 'collation' => 'utf8mb4_unicode_ci', 'prefix' => 'sys_', 'strict' => false, 'engine' => null, ], 'pgsql' => [ 'driver' => 'pgsql', 'url' => env('DATABASE_URL'), 'host' => env('DB_HOST', '127.0.0.1'), 'port' => env('DB_PORT', '5432'), 'database' => env('DB_DATABASE', 'forge'), 'username' => env('DB_USERNAME', 'forge'), 'password' => env('DB_PASSWORD', ''), 'charset' => 'utf8', 'prefix' => '', 'prefix_indexes' => true, 'schema' => 'public', 'sslmode' => 'prefer', ], 'sqlsrv' => [ 'driver' => 'sqlsrv', 'url' => env('DATABASE_URL'), 'host' => env('DB_HOST', 'localhost'), 'port' => env('DB_PORT', '1433'), 'database' => env('DB_DATABASE', 'forge'), 'username' => env('DB_USERNAME', 'forge'), 'password' => env('DB_PASSWORD', ''), 'charset' => 'utf8', 'prefix' => '', 'prefix_indexes' => true, ], ], 我们在使用其余的数据库连接，如下方所示： $userinfo = DB::connection('mysql2')->table('user') ->where('personal_id', '=', $data['personal_id']) ->where('name', '=', $data['name']) ->where('school_id', '=', $data['school_id']) ->select('id', 'type', 'school_id', 'personal_id', 'name', 'email', 'ilab_user', 'ilab_pwd') ->first(); ~~~