struts2中需要的简单OGNL投影
我想创建一个非常简单的标签，用集合的 id 进行参数化，如下所示：
<s:url action="theaction" namespace="/" includeParams="all" id="histURL">
<s:param name="sources" value="sources.{id}"></s:param>
</s:url>
${histURL}
如果我在 Action 类中定义了三个 Source 对象，其 id 为 1,2 和 3，那么我假设，histURL 输出将是 sg像：
http://localhost:8080/myproject/theaction&sources=1&sources=2&sources=3
但它不起作用，它显示：
http://localhost:8080/myproject/theaction
另一个提示：
<s:url action="theaction" namespace="/" includeParams="all" id="histURL">
<s:param name="sources" value="sources"></s:param>
</s:url>
${histURL}
导致
http://localhost:8080/myproject/theaction&sources=com.mycompany.Source@32324&sources= ...
所以集合作为参数起作用，我只是假设 OGNL 投影 效果很好，但似乎有问题。或者我错过了什么？这是 OGNL 吗？ :)
谢谢您的回复！
I would like to create a really simple tag parameterized with a collections' ids something like the following:
<s:url action="theaction" namespace="/" includeParams="all" id="histURL">
<s:param name="sources" value="sources.{id}"></s:param>
</s:url>
${histURL}
If I have say three Source objects defined in my Action class, having ids 1,2 and 3 then I assume, the histURL output will be sg like:
http://localhost:8080/myproject/theaction&sources=1&sources=2&sources=3
But it does not work, it displays:
http://localhost:8080/myproject/theaction
Another hint:
<s:url action="theaction" namespace="/" includeParams="all" id="histURL">
<s:param name="sources" value="sources"></s:param>
</s:url>
${histURL}
results in
http://localhost:8080/myproject/theaction&sources=com.mycompany.Source@32324&sources= ...
So the collection as a paramater works, I just assumed that the OGNL projection works well but seems to be buggy. Or am I missing something? Is this OGNL at all? :)
Thank you for your replies!
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评论（1）
我很笨。
就是这样，我错过了我使用了错误的类，它根本没有 Id。
这绝对是 OGNL，而且很有魅力:)
I'm dumb.
This is just the way, I missed that I used a wrong class, which had no Id at all.
It's definitely OGNL and it works like charm :)