Java连接MySQL中文乱码处理

/** **********************************************************
     * Add resident
     ************************************************************
     */
    public boolean addResident(String userID,String realName,String gender,
            String birth,String addr,String tel,String email,String checkin) {
        Connection conn = this .getConnection();
        CallableStatement stmt = null ;
        Date birthDate = null ;
        Date checkinDate = null ;
        if (birth != null & amp; & amp; ( ! birth.equals( & quot; & quot;))) {
            birthDate = Date.valueOf(birth);
        }
        if (checkin != null & amp; & amp; ( ! checkin.equals( & quot; & quot;))) {
            checkinDate = Date.valueOf(checkin);
        }
        try {
            stmt = conn.prepareCall( & quot;{call ICommunity.addResident( ? , ? , ? , ? , ? , ? , ? , ? , ? )} & quot;);
            stmt.setString( 1 , userID);
            stmt.setString( 2 , realName);
            stmt.setString( 3 , gender);
            stmt.setDate( 4 , birthDate);
            stmt.setString( 5 , addr);
            stmt.setString( 6 , tel);
            stmt.setString( 7 , email);
            stmt.setDate( 8 , checkinDate);
           
            stmt.registerOutParameter( 9 , Types.BOOLEAN);
            stmt.execute();
            return stmt.getBoolean( 9 );
           
           
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return false ;
        }
        finally {
            try {
                conn.close();
                stmt.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }