Exception Trace

Code:	[2002] can not connect database.please check the config file.
Message:	SQLSTATE[HY000] [2002] 由于连接方在一段时间后没有正确答复或连接的主机没有反应，连接尝试失败。
File:	D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\PXPDO\AbstractDAO.php (Line:869)
Trace:	#0 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\PXPDO\AbstractDAO.php(869): PDO->__construct('mysql:host=mysq...', 'sq_xuanwei88', 'sQETU17a', Array) #1 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\PXPDO\AbstractDAO.php(494): Phoenix\PXPDO\AbstractDAO->_lazyConn() #2 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\PXPDO\AbstractDAO.php(466): Phoenix\PXPDO\AbstractDAO->prepare('SELECT a., ars...', Array, 'READ_ONE') #3 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\PXPDO\AbstractDAO.php(729): Phoenix\PXPDO\AbstractDAO->prepareBindLevel2Cache('SELECT a., ars...', Array, 'READ_ONE') #4 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\PXPDO\Mysql.php(101): Phoenix\PXPDO\AbstractDAO->sqlDataReadOne('SELECT a.*, ars...', Array) #5 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\PXPDO\AbstractDecorator.php(205): Phoenix\PXPDO\Mysql->find() #6 D:\wwwroot\xwplanning\wwwroot\app\Repository\Impl\ArchivesImpl.php(42): Phoenix\PXPDO\AbstractDecorator->find() #7 D:\wwwroot\xwplanning\wwwroot\app\Service\Impl\ArchivesImpl.php(104): App\Repository\Impl\ArchivesImpl->find('444') #8 D:\wwwroot\xwplanning\wwwroot\app\ZhCN\Index.php(102): App\Service\Impl\ArchivesImpl->getSubstance('444') #9 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Routing\ProxyHandler.php(426): App\ZhCN\Index->detail(true) #10 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Routing\ProxyFactory.php(773): Phoenix\Routing\ProxyHandler->invoke('detail', Array) #11 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Routing\Controller.php(1112): Phoenix\Routing\ProxyFactory->invoke('App\\ZhCN\\Index', 'detail', Array) #12 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Routing\Controller.php(273): Phoenix\Routing\Controller->_controllerLoader() #13 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Routing\Controller.php(94): Phoenix\Routing\Controller->_runController() #14 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Routing\Controller.php(1313): Phoenix\Routing\Controller->run(Array, false) #15 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Foundation\Application.php(136): Phoenix\Routing\Controller::start(Array, false) #16 D:\wwwroot\xwplanning\wwwroot\vendor\phoenix\framework\src\Phoenix\Foundation\Application.php(36): Phoenix\Foundation\Application::dispatcher('/case/detail/44...') #17 D:\wwwroot\xwplanning\wwwroot\app.php(5): Phoenix\Foundation\Application::bootstrap() #18 {main}