如何在Struts 2中使用DisplayTag与嵌套列表和属性 [英] How to use DisplayTag with nested Lists and Properties in Struts 2

问题描述

我试图显示一个列表。在这个列表中还有另一个我想要显示的列表。使用Struts，我的代码如下所示：

 < s：iterator value =lendingList> 
< tr> 
< td>< s：属性值=lendBy.matNumber/> < s：property 
 value =lendBy.firstName/> < s：属性值=lendBy.name/>< / td> 
< td>< s：property value =date/>< / td> 
< td>< s：iterator value =publication> 
 < / s：迭代器>< / td> 
< td>< s：iterator value =publication> 
< s：property value =title/> 
< / s：迭代器>< / td> 
< td>< s：property value =returnDate/>< / td> 
< td>< s：property value =remindProcessStarted/>< / td> 
  

新的DisplayTag表格如下所示：

 < display：table id =lendingListname =lendingListpagesize =6
 cellpadding =5px; CELLSPACING = 5像素; 
 style =margin-left：50px; margin-top：20px; requestURI =sort =list> 
< display：column property =lendBy.matNumbertitle =Mat.-Nr。 
 sortable =true/> 
< display：column property =lendBy.firstNametitle =Nachname
 sortable =true/> 
< display：column property =lendBy.nametitle =Vornamesortable =true/> 
< display：column property =publication.isbntitle =Vornamesortable =true/> 
< display：column property =publication.titletitle =Vornamesortable =true/> 
< display：column property =returnDatetitle =Rückgabedatum
 sortable =true/> 
 
< / display：table> 
  

我尝试使用 publication.isbn ，但不幸的是它不工作。我无法在文档中找到任何提示。

解决方案

问题是我不得不给出 uid 添加到表中，然后我可以像下面这样使用Struts 迭代器访问属性：

 < display：column media =htmltitle =Titelsortable =true> 
 < s：property value =title/> 
< / s：iterator> 
< / display：column> 
  

I'm trying to display a list. Inside this list there is another list which I want to display. With Struts my code looked like this:

<s:iterator value="lendingList">
    <tr>
        <td><s:property value="lendBy.matNumber" /> <s:property
                value="lendBy.firstName" /> <s:property value="lendBy.name" /></td>
        <td><s:property value="date" /></td>
        <td><s:iterator value="publication">
                <s:property value="isbn" />
            </s:iterator></td>
        <td><s:iterator value="publication">
                <s:property value="title" />
            </s:iterator></td>
        <td><s:property value="returnDate" /></td>
        <td><s:property value="remindProcessStarted" /></td>

The new DisplayTag Table looks like this:

<display:table id="lendingList" name="lendingList" pagesize="6"
    cellpadding="5px;" cellspacing="5px;"
    style="margin-left:50px;margin-top:20px;" requestURI="" sort="list">
    <display:column property="lendBy.matNumber" title="Mat.-Nr."
        sortable="true" />
    <display:column property="lendBy.firstName" title="Nachname"
        sortable="true" />
    <display:column property="lendBy.name" title="Vorname" sortable="true" />
    <display:column property="publication.isbn" title="Vorname" sortable="true" />
    <display:column property="publication.title" title="Vorname" sortable="true" />
    <display:column property="returnDate" title="Rückgabedatum"
        sortable="true" />

</display:table>

I tried to access the properties with publication.isbn, but unfortunately it is not working. I couldn't find any hints in the documentation.

解决方案

The problem was that I had to give a uid to the table, after that I can access the properties with a Struts iterator like this:

<display:column media="html" title="Titel" sortable="true">
    <s:iterator value="#attr.lendingList.publication">
        <s:property value="title" />
    </s:iterator>
</display:column>

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