[xwiki-users] Encoding problems with Export

Hi all, We tried xwiki a month ago with the standalone vertion including jetty and hsqldb. And now we changed jetty to Tomcat for better performances which is easy. However, we also want to change the database from hsqldb to mysql because the there is a database size limit for hsqldb. But it is difficult. We tried to export the wiki pages (including the user registration infomation), however the pages with chinese characters as their names has encoding problems, that is, their contents are all right in utf8, however the names have disordered codes. We also tried to use the Large Wiki Export, but got no lucky. It simply doest work at all :( Any suggestions? Thank you all!