java jstl标签，主要讲解<fn:length>等FN标签-Java JSTL label, covers length > < fn: fn labels such as

jstl 标签需要用到的两个jar包，jspscr ipt不好用的时候就可以用这个。-jstl tags need two jar package, jspscr ipt difficult to use when you can use this.