如图：
SEVERE: Servlet.service() for servlet jsp threw exceptionorg.apache.jasper.JasperException: /ch12/hellotag.jsp(7,46) Attempt to redefine the prefix holyshit to mldn_hello, when it was already defined as /WEB-INF/hellotag.tld in the current scope.
尼玛我搞了半天这个exception，原来是因为第一个@taglib没有被注释掉，我BLEEP！难道这就是传说中的很傻很天真？我还以为这个注释管用呢
后来发现，原来应该这么用：<%----%>