Question

Servlet代码段：

// check/get session
    HttpSession session = request.getSession();
    ArrayList<LineItem> transactions = (ArrayList<LineItem>)session.getAttribute("transactions");
.....
// set session
session.setAttribute("transactions", transactions);

JSP代码段：

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>
.....
<c:forEach var="item" transactions="${transactions}">  
            <tr>
                <td>${item.action}</td>
                <td>${item.product.getCode}</td>
                <td>${item.product.getArtist}</td>
                <td>${item.product.getTitle}</td>
                <td>${item.product.getCategory}</td>
                <td>${item.product.getDescription}</td>
                <td>${item.product.getPriceCurrency}</td>
            </tr>
 </c:forEach>

例外：

SEVERE: Servlet.service() for servlet [jsp] in context with path [/Maintenance] threw exception [/product_audit.jsp (line: 52, column: 4) Attribute transactions invalid for tag forEach according to TLD] with root cause
org.apache.jasper.JasperException: /product_audit.jsp (line: 52, column: 4) Attribute transactions invalid for tag forEach according to TLD

我正在使用JSTL 1.0（在清单中声明并验证.jar文件）。有什么建议吗？

Answer 1

错误消息很明确：

根据TLD
，标签forEach的属性事务无效

问题在于：

<c:forEach var="item" transactions="${transactions}">
<!--                  ^ there is no such attribute -->

transactions改变items：

<c:forEach var="item" items="${transactions}">

Eclipse中的JSP / JSTL错误 - 未定义的属性名称

1 个答案: