在struts 2中将可变数量的参数从表格传递到动作 [英] Passing variable number of parameters from form in to action in struts 2

问题描述

我在我的应用程序中使用struts2，并且在jsp中有一个表单，该表单已提交给动作类.

I am using struts2 in my application and have a form in a jsp which is submitted to a action class.

表单中输入字段的数量在运行时可能会有所不同，因此操作类不能为参数设置固定的setter和getter.我试图在单个动作类中捕获这些可变数量的输入.我想知道是否可以通过Struts 2进行操作，如果可以的话，该怎么办?我知道表单中的输入字段名称(通过jsp表单中的迭代器填充的输入字段名称).

The number of input fields in the form can vary at runtime and hence the action class can not have fixed setter and getter for the parameters. I am trying to capture these variable number of inputs in a single action class. I want to know if its possible via Struts 2 and if it is how can i do it ? I am aware of the input field names in the form (input field names populated via iterator in the jsp form).

注意:1)我知道通过针对动作类中所有表单值的适当的getter和setter来捕获动作类中的表单值(参数)的方法. 2)我已经按照struts 2 http:中所述进行了模型驱动的操作: //struts.apache.org/2.3.1/docs/model-driven.html

Note: 1) I am aware of the way to capture the form values (parameters) in the action class via the appropriate getter and setter for all form values in the action class. 2) I have gone through the model driven action as described in struts 2 http://struts.apache.org/2.3.1/docs/model-driven.html

我在搜索方面无法获得任何解决方案，我们将不胜感激.

I could not get any solution on searching and any help is appreciated.

表格人口代码:

<s:form action="/reports/getReport.action" cssClass="table_with_padding">
   <s:iterator value="reportParamsList.items" id="paramList_item">
       <tr><td><s:property value="#paramList_item.paramdesc" /></td><TD><s:textfield name="#paramList_item.paramname" /></TD></tr>
    </s:iterator>
    <s:submit theme="ajax" loadingText="%{getResource('SiteWide.Loading.Text')}" targets="app_area" type="button" align="left" cssClass="app_form_button" value="Submit" />
</s:form>

推荐答案

对所有textfields使用相同的name属性，并使用相应的hidden字段进行识别

Use same name attribute for all textfields and a corresponding hidden field to identify it

<s:iterator value="reportParamsList.items" id="paramList_item">
       <tr>
           <td>
               <s:property value="#paramList_item.paramdesc" />
           </td>
           <td>
                <s:textfield name="element" />
                <s:hidden name="myValue" value="#paramList_item.paramname" />
           </td>
       </tr>
</s:iterator>

然后在您的动作类中声明这些变量及其getter/setter方法

Then in your action class declare these variables and their getter/setter

private List<String> element;
private List<String> myValue;

现在您可以遍历myValue列表并获取其相应的textfield值

Now you can iterate over myValue list and get its corresponding textfield's value

Iterator<String> it = myValue.iterator();
int index = 0;
while(it.hasNext()){
 System.out.println("hidden field's value="+it.next());
 System.out.println("textfield's value="+element.get(index));
 index++;
}

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