How do I deal with UTF8

I use DataProcessor to operate the database. When I input Chinese, the value I get from Servlet is messy code. The html and the browser are UTF8 code.

Be sure that DB collation set to UTF8 as well.

Certainly The DB is UTF code

When all 3 components ( page, script, db ) are using utf - the final output must be a valid utf page.
Can you share an example of DB dump for which problem occurs.