Getting error in executeUpdate Java MySQL

Question

I trying to set "ALL PRIVILEGES" from Java on remote MySQL database test and user test . Here is snippet of my code:

Class.forName("com.mysql.jdbc.Driver");
Connection con = null;
con = (Connection) DriverManager.getConnection("jdbc:mysql://xx.xxx.xxx.xx:3306/?user=root&password=pswrd");

Statement st = con.createStatement();
int res = st.executeUpdate("GRANT ALL PRIVILEGES ON test.* TO 'test'@'%' IDENTIFIED BY '12345';");

Nothing extraordinary. All queries from root user work fine, but in this partucular case I'm getting error:

Exception in thread "main"   com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Access denied for user 'root'@'%' to database 'test'

What did I do wrong?

UPDATE

Here's answer . So, the problem wasn't solved ...

Answer 1

尝试建立与

DriverManager.getConnection("jdbc:mysql://hostname:port/dbname","username", "password");

Answer 2

请确保由“ pswrd”标识的“ root @ yourHost”（尤其是来自yourHost）具有管理此数据库特权的权限。

Answer 3

尝试添加主机，例如“ test” @“ yourhost ”