在做updownselect.jsp 时候冒出来这样的异常
异常如下
type Exception report
message Expression parameters.name is undefined on line 92, column 85 in template/simple/select.ftl. - Class: freemarker.core.TemplateObject
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Expression parameters.name is undefined on line 92, column 85 in template/simple/select.ftl. - Class: freemarker.core.TemplateObject File: TemplateObject.java
图片
我的jsp文件如下
label_updownselect.jsp 文件
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<s:head/>
<title>updownselect标签</title>
</head>
<body>
<s:form >
<s:updownselect list="{'Struts2','Hibernate','Spring','Ajax'}" moveUpLabel="上移" moveDownLabel="下移" selectAllLabel="全选"/>
</s:form>
</body>
</html>
1 网上有人说加上<s:head/> 标签 但是加上后并没有改善
2 给uodownselect 加上name标签
至于为什么需要用方法2 后面详细阐述
改正后的代码如下
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<s:head/>
<title>updownselect标签</title>
</head>
<body>
<s:form >
<s:updownselect list="{'Struts2','Hibernate','Spring','Ajax'}" name="updown" moveUpLabel="上移" moveDownLabel="下移" selectAllLabel="全选"/>
</s:form>
</body>
</html>
Expression parameters.name is undefined on line 92, column 85 in template/simple/select.ftl
这句话的意思为一个parameters的name没有命名 于是我们给予他name标签的定义 就可以解决问题
结果如下
(异常)HTTP Status 500 Expression parameters.name is undefined on line 92, column 85 in select.ftl
原文：http://blog.csdn.net/u010416101/article/details/44565865
