JDBC连接错误（Illegal mix of collations。。。）

1、连接java和mysql时出现了这样的报错：

java.sql.SQLException: Illegal mix of collations (latin1_swedish_ci,IMPLICIT)

and (utf8_general_ci,COERCIBLE) for operation '='

解决方法：在mysql命令下执行：ALTER DATABASE mybatisdb DEFAULT CHARACTER SET utf8 COLLATE utf8_bin

，然后重新建表就可以了。

2、java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

解决方法：grant all privileges on *.* to 'root'@'127.0.0.1' identified by '密码';   然后flush privileges;