重写浏览标签图标
//图片路径
var faviconAddress = "${request.contextPath}/major/images/yangcai/logo.png"
var link = document.querySelector("link[rel*='icon']") || document.createElement('link')
link.type = 'image/x-icon'
link.rel = 'shortcut icon'
link.href = faviconAddress
document.getElementsByTagName('head')[0].appendChild(link)