java 如何从 displaytag 中的 struts2 复选框获取复选框值到操作类
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How can i get checkbox values from struts2 checkbox in displaytag to action class
提问by harshalb
I am working on struts2application in which i am using displaytagfor pagination support.
我正在研究struts2应用程序，其中我使用displaytag进行分页支持。
Now i want a check box for each row in the table for that i am doing this.
现在我想要一个复选框，用于表中的每一行，因为我正在这样做。
<display:table name="countryList" export="true" class="table" id="countryList" pagesize="${selectedPageSize}" decorator="org.displaytag.decorator.TotalTableDecorator" >
<display:column property="id" title="ID" paramId="id" />
<display:column property="name" title="Name" sortable="true"/>
<display:column title="Delete All">
<s:checkbox id="check" name="check" fieldValue="%{#attr.countryList.id}" theme="simple"/>
</display:column>
</display:table>
<s:submit action="deleteall" value="DeleteSelected" />
till here its work fine. now i want to delete all the countries that are checked through the check box.
直到这里它的工作正常。现在我想删除通过复选框选中的所有国家。
for that i want the ids of the countries that are checked .for that i have to take the values in an array.
为此，我想要检查的国家/地区的 ID。为此，我必须采用数组中的值。
The problem is how can i send the values from jsp and then get it at the action class
问题是如何从 jsp 发送值然后在操作类中获取它
回答by Rich Kroll
If you add a String[] to your action named the same as your checkbox(s) and expose it via accessors (getters/setters) struts 2 should auto populate it.
如果将 String[] 添加到与复选框名称相同的操作中并通过访问器（getter/setter）公开它，struts 2 应该自动填充它。
回答by Journeyman Programmer
This is how I would do it.
这就是我要做的。
instead of 'id' for all id columns, append a sequence number so that each id has a unique name, such as 'id1', 'id2' etc
create a interceptor that collects values of parameters prefixed with 'id'
configure your action to use the interceptor
代替所有 id 列的 'id'，附加一个序列号，以便每个 id 都有一个唯一的名称，例如 'id1'、'id2' 等
创建一个拦截器来收集以“id”为前缀的参数值
配置您的操作以使用拦截器
My strut fu is rusty though. There probably is a better way.
不过，我的支柱 fu 生锈了。可能有更好的方法。
