IT 관련 포스팅

getSession(false) 는 session이 없으면 NULL을 반환한다 

getSession(true) 는 session이 없으면 새로 생성해서 Session을 반환한다.

getSession() 은 getSession(true) 와 같다

[root@localhost]# yum install mysql-server

[root@localhost]# service mysqld start

[root@localhost]# mysql

[root@localhost]# chkconfig mysqld on

[root@localhost]# vi /etc/sysconfig/iptables

-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

[root@localhost]# service iptables restart

mysql> grant all privileges on *.* to '사용자'@'localhost' identified by '패스워드' with grant option;

mysql> grant all privileges on *.* to '사용자'@'%' identified by '패스워드' with grant option;

mysql> flush privileges;

mysql> update user set password=password('1234') where user='root';

mysql> flush privileges;