微信浏览器强制使用

 <!-- 微信浏览器判断
  <script type="text/javascript"> 
window.onload = function(){ 
if(isWeiXin()){ 
var p = document.getElementsByTagName('p'); 
p[0].innerHTML = window.navigator.userAgent; 
} 
} 
function isWeiXin(){ 
var ua = window.navigator.userAgent.toLowerCase(); 
if(ua.match(/MicroMessenger/i) == 'micromessenger'){ 
return true; 
}else{ 
alert("请使用微信查看");
window.location.href="${pageContext.request.contextPath}/isweixin.jsp";
return false; 
} 
} 
</script> -->