安装mysql启动服务时候报错
/etc/init.d/mysqld start
Starting MySQL... ERROR! The server quit without updating PID file (/home/mysql/data/slave107.pid).
解决：添加软连接
mv /etc/my.cnf /etc/my.cnf.bak
ln -s /usr/local/mysql /etc/my.cnf //mysql安装位置：/usr/local/mysql
IDEA通过JDBC连接mysql写入数据中午乱码
解决
//DriverManager.getConnection("jdbc:mysql://172.16.2.107:3306/ApacheCommon?useUnicode=true&characterEncoding=utf8&&useSSL=false", "root", "1234")
DriverManager.getConnection("jdbc:mysql://172.16.2.107:3306/ApacheCommon?useUnicode=true&characterEncoding=utf8", "root", "1234")