Bootstrap 3 支持 IE8
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="<%=request.getContextPath()%>/resources/js/ie/html5shiv.min.js"></script>
<script src="<%=request.getContextPath()%>/resources/js/ie/respond.min.js"></script>
<![endif]-->
<script type="text/javascript" src="<%=request.getContextPath()%>/resources/js/bootstrap/js/jquery.min.js" ></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/resources/js/bootstrap/js/bootstrap.min.js" ></script>
respond.min.js github地址
html5shiv.min.js github地址