[javaEE] EL表达式调用java方法详解编程语言

 ?xml version="1.0" encoding="UTF-8"? 

 taglib version="2.0" 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" 

 tlib-version 1.0 /tlib-version 

 short-name ELFunc /short-name 

 uri http://www.tsh.com/ELFunc /uri 

 function 

 name urlEncode /name 

 function-class com.tsh.utils.ELFunc /function-class 

 function-signature java.lang.String urlEncode(java.lang.String) /function-signature 

 /function 

 /taglib 

3.jsp头部导入

 [email protected] uri="http://www.tsh.com/ELFunc" prefix="ELFunc"% 

4.el标签使用

 %=URLEncoder.encode("陶士涵") % 

${ELFunc:urlEncode("陶士涵") }

使用jstl标签库，手动导入jstl

1.下载压缩包，把jstl.jar和standard.jar放在tomcat的lib目录下

2.把tld放在WEB-INF目录下

3.jsp页面导入 [email protected] uri= http://java.sun.com/jsp/jstl/functions prefix= fn %

4.使用${fn:toUpperCase( sdsdsdsSDSDSDssddsdsd ) }

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