JSTL1.0和JSTL1.1的区别

这要从一个异常说起

According to TLD or attribute directive in tag file, attribute value does not accept any expressions

产生异常的代码是<c:set var="customerid" value="${1+2}"/>

如果使用jstl1.0会产生异常，因为1.0不支持attribute的EL赋值，使用1.1就正常

 

我们需要在两个地方注意1.0和1.1的使用

一个是web.xml的头

 

JSTL1.1和JSP2 .0
<web-app version = " 2.4 "  
    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-app_2_4.xsd " >

</web-app>

JSTL1.0和JSP1 .2

<web-app version = " 2.3 "  
    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-app_2_3.xsd " >

</web-app>

 

1.0引入方式

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>

1.1引入方式

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>