JAVA判断是否是微信内置浏览器,是否是在微信内打开

/**
     * 通过请求头判断是否是微信内置浏览器,是否是在微信内打开
     * @param request
     * @return
     */
    @RequestMapping(value = "/hello")
    public String hello(HttpServletRequest request){
        String ua = request.getHeader("user-agent")
                .toLowerCase();
        if (ua.indexOf("micromessenger") <= 0){
            return "不是微信内置浏览器";
        }
        return "微信内置浏览器";
    }