The requested list key 'AllDepartment' could not be resolved as a collection/array/map/enumeration/

最新推荐文章于 2025-06-05 15:22:13 发布
原创 最新推荐文章于 2025-06-05 15:22:13 发布 · 442 阅读 · 0 ·
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本文探讨了在Struts2框架中遇到HTTP状态码500错误的具体原因及解决办法。主要分析了在页面加载时由于action执行完毕但未保存所需的list数据导致的选择框无法正常显示的问题。

HTTP Status 500 - tag 'select', field 'list', name 'post.department.depId': The requested list key 'AllDepartment' could not be resolved as a collection/array/map/enumeration/iterator type. Example: people or people.{name} - [unknown location]

原因：

由于我的action执行完又回到当前页面.而当前页面的<s:select list="myList">当页面加载的时候就显示,而我action执行完并没有保存myList,所以这个时候的list是空的,所以could not be resolved as a collection/array/map/enumeration/iterator type.

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