Questions[resin](server)

I'm using resin(tomcat) back in nginx(apache) parse JSP file only,like this:

        location ~ \.jsp {
            // 88 is resin(tomcat) port
            proxy_pass   http://localhost:88; 
        }

should I activate keepalive in resin(tomcat)?

My characters are in Chinese Simplified that stored in MySQL database by all tables and character set to UTF-8.

I am reading them to my PHP page that runs under resin server on Windows XP Professional.

My Resin server version is 4.0.15; PHP version is 5.3.2; and MySQL is 5.5.

Any idea how to retrieve the Chinese character data to my PHP page and displaying them in correct Chinese words? I get the Question Mark ("?") on those Chinese characters.

If I am typing Chinese character on PHP page, it can display correct Chinese words on web page. So, I assume is the connection between MySQL and PHP have problem.

But previously when I was running under Apache, there is no character problem. May I know why?

Without getting into proxying, or port redirects, port forwards, etc, is there any native method to bind Resin (a Java server) to port 80, on an Ubuntu server, while Resin is started by root but then operates as an unprivileged user (www-data)?

This is on Ubuntu 10.10, running Resin from the caucho apt repository. I know if I run & operate Resin as root, I can make it use port 80, but as you can imagine, that's not ideal.