JDBC鏈接錯誤（Illegal mix of collations。。。）

一、鏈接java和mysql時出現了這樣的報錯：

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

and (utf8_general_ci,COERCIBLE) for operation '='

解決方法：在mysql命令下執行：ALTER DATABASE mybatisdb DEFAULT CHARACTER SET utf8 COLLATE utf8_bin

，而後從新建表就能夠了。

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

解決方法：grant all privileges on *.* to 'root'@'127.0.0.1' identified by '密碼';   而後flush privileges;