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问题描述：

Uncaught exception 'Think\Exception' with message 'Access denied for user 'www-data'@'localhost' (using password: NO)' in /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Common/functions.php:105 Stack trace: #0 /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Library/Think/Db/Driver/Mysqli.class.php(45): E('Access denied f...') #1 /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Library/Think/Db.class.php(166): Think\Db\Driver\Mysqli->connect() #2 /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Library/Think/Db/Driver/Mysqli.class.php(80): Think\Db->initConnect(false) #3 /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Library/Think/Db/Driver/Mysqli.class.php(209): Think\Db\Driver\Mysqli->query('SHOW COLUMNS FR...') #4 /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Library/Think/Model.class.php(138): Think\Db\Driver\Mysqli->getFields('config') #5 /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Library/Think/Model.class.php(125): Think\Model->flush() #6 /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Library/Think/Model.class.p

错误位置

FILE: /home/wangpeihua/www/html/OpenCenter/ThinkPHP/Common/functions.php 　LINE: 105

环境已经有了,我直接下载安装包,访问install.php出错