学习JSP遇到的问题 ---标准标志库(2)

2008-02-23 09:29:38来源:互联网 阅读 ()

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<html>
<head>
<title>
测试网页</title>
</head>
<body>

The time is currently:<br><br>
<c:out value = "${cal.date}"/>

<c:set var ="hour" value = "${cal.hour}" scope = "request"/>

<c:choose>
<c:when test = "${hour >0 && hour <= 11}">
Good Morning!
</c:when>

<c:when test = "${hour >=12 && hour <= 17}">
Good Afternoon!
</c:when>

<c:otherwise>
Good Evening!
</c:otherwise>

</c:choose>
</body>
</html>

这个文件没有任何问题。但是看下一:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<%@ page contentType="text/html; charset=gb2312" language="java"%>

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

<fmt:setLocale value = "en_US"/>

<jsp:useBean id = "cal" class="jstlTest.CalendarBean"/>

<html>
<head>
<title>
测试网页</title>
</head>
<body>

The time is currently:<br><br>
<c:out value = "${cal.date}"/>

<c:set var ="hour" value = "${cal.hour}" scope = "request"/>

<c:if test = "${hour >0 && hour <= 11}">
Good Morning!
</c:if>

<c:if test = "${hour >=12 && hour <= 17}">
Good Afternoon!
</c:if>

<c:if test = "${hour >=18}">
Good Evening!
</c:if>

<c:out value = "${hour}"/>
</body>
</html>
这个页面就会出现上面的问题.JSP Parsing Error:The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application.

3.关于标志库的XML部分。

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