jsp 引用常量类

使用 Jakarta Project: Unstandard Tag library 引入常量类即可

<un:useConstants var="const" className="java.lang.Integer" />

下载地址：http://people.apache.org/builds/jakarta-taglibs-sandbox/nightly/projects/unstandard/

引入jar包，标签库，web.xml中添加标记

<jsp-config>
    <taglib>
      <taglib-uri>http://jakarta.apache.org/taglibs/unstandard-1.0</taglib-uri>
      <taglib-location>/WEB-INF/taglibs-unstandard.tld</taglib-location>
    </taglib>
</jsp-config>