Scriptlet错误:对于Date类型，方法getFullYear()/toLocaleDateString()未定义

Question

我目前正在尝试使用scriptlet在页面标题和描述中输入当前年份或区域设置日期，如下所示。在控制台上，我得到标题中提到的错误，导致"；org.apache.jasper.JasperException：无法为JSP编译类"错误

<tiles:param name="pageTitle">something something <%=(new java.util.Date()).getFullYear()%> something something </tiles:param>
<tiles:param name="pageDescription">Last Update: <%=(new java.util.Date()).toLocaleDateString()%>. more something something</tiles:param>

我做错了什么？我该如何解决？我在页面的开头导入了java类Date，如下所示：

<%@ page import="java.util.Date" %>

Answer 1

您可以尝试JSTL来打印带有一些格式的日期。

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

<c:set var = "now" value = "<% = new java.util.Date()%>" />
<p>Formatted Date (1): <fmt:formatDate type = "time" value = "${now}" /></p>
<p>Formatted Date (2): <fmt:formatDate type = "date" value = "${now}" /></p>
<p>Formatted Date (3): <fmt:formatDate type = "both" value = "${now}" /></p>
<p>Formatted Date (4): <fmt:formatDate type = "both" dateStyle = "short" timeStyle = "short" value = "${now}" /></p>
<p>Formatted Date (5): <fmt:formatDate type = "both" dateStyle = "medium" timeStyle = "medium" value = "${now}" /></p>
<p>Formatted Date (6): <fmt:formatDate type = "both" dateStyle = "long" timeStyle = "long" value = "${now}" /></p>
<p>Formatted Date (7): <fmt:formatDate pattern = "yyyy-MM-dd" value = "${now}" /></p>