Questions about MySQL in Chinese are question marks

Today I wrote the MySQL database connection, initially connection always reported null pointers, and then found no Class.forName ("Com.mysql.jdbc.Driver").

Then appeared in the text paragraph is always question mark problem, checked the elder brother Niang all not to be possible.

After that, add the character encoding to the URL and then connect to MySQL! As follows:

String url= "Jdbc:mysql://localhost:3306/xxxxx? characterencoding=utf-8";

Add the red part, is actually a small problem, easy to careless.

Questions about MySQL in Chinese are question marks