The character encoding of function create() in the class RQuery and class RCrontab is  "ISO-8859-1", which makes me confused.

Query contains UTF-8 character such as '男' will fail.

Relevant Code:
 @Produces("text/html;charset=ISO-8859-1")
    public Viewable create(@QueryParam(value = "queryId") Integer queryId) {
       ...
        return new Viewable("/query/create.vm");
    }
