jsp wap 开发中乱码问题

<%@ page contentType="text/vnd.wap.wml" pageEncoding="utf-8" %> <?xml version="1.0" encoding="utf-8"?>


<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.2//EN" "http://www.wapforum.org/DTD/wml12.dtd">
<%response.setContentType("text/vnd.wap.wml;charset=utf-8") ;%> 

<wml>
  <card id="login" title="Login Screen">
    <p>
           
            <br/>
            用户名: <input name="LogonName" type="text" emptyok="false"  value=""/> 
            <br/>
            密码: <input name="LogonWord" type="password" emptyok="false" value=""/>
  </p>
<do type="accept" label="登陆">
    <go href="prohint.jsp" method="post">
            <postfield name="username" value="$(LogonName)"/>
            <postfield name="password" value="$(LogonWord)"/>