实现base标签中有绝对路径

1.首先在jsp页面中写一段神奇的JAVA代码

<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>

2.再base标签中使用

<base href="<%=basePath%>">