标准的JSP 标记可以调用JavaBeans组件或者执行客户的请求，这大大降低了JSP开发的复杂度和维护量。JSP技术也允许你自定义taglib，其实换句话说，taglib可以看成是对JSP标记的一种扩展，-JSP standard tag called JavaBeans components, or the implementation of customer requests, which greatly reduces the complexity of JSP development and maintenance for volume. JSP technology also allows you to customize taglib, in other words, can be seen as taglib JSP is a marked expansion