1 普遍类
2 方法必须是static
3 如果用spring 的话该类的参数的 setxxx();方法需要非static 否则无法注入。
4在WEB-INF 下建立 如 my.tld 文件 在如standard.jar 找到 fn.tld
<?xml version="1.0" encoding="UTF-8" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
version="2.0">
<description>JSTL 1.1 i18n-capable formatting library</description>
<display-name>JSTL fmt</display-name>
<tlib-version>1.1</tlib-version>
<short-name>my</short-name>
<uri>http://www.bjxt.com/oa/functions</uri>
<function>
<description>
Tests if an input string contains the specified substring in a case insensitive way.
</description>
<name>containsIgnoreCase</name>
<function-class>org.apache.taglibs.standard.functions.Functions</function-class>
<function-signature>boolean containsIgnoreCase(java.lang.String, java.lang.String)</function-signature>
<example>
<c:if test="${fn:containsIgnoreCase(name, searchString)}">
</example>
</function>
</taglib>
5 还需要在web.xml 注册下
<jsp-config>
<taglib>
<taglib-uri>http://www.bjxt.com/functions</taglib-uri>
<taglib-location>/WEB-INF/my.tld</taglib-location>
</taglib>
</jsp-config>
注意 <taglib-uri>需要放在<taglib-location>前面
<name>containsIgnoreCase</name> 必须和 函数名相同
6 jsp 界面引用
<%@ taglib uri="http://www.bjxt.com/oa/functions" prefix="my"%>
7使用
<c:if test="${my:hasPermissionBySn(user.id,'user',2)}">
<a href="#"
onclick="openWin('user.action?method=updateInput&id=${person.user.id }','chgpsw',600,100);">修改帐号</a>
</c:if>