struts 2 checkboxlist验证问题

发布于 2024-08-22 23:50:40 字数 167 浏览 5 评论 0原文

我有 struts 2 复选框列表，如下所示：

<s:checkboxlist list="listOfOptions" name="someName" />

我想添加验证以确保至少有一个复选框已被选中。有什么想法吗？

谢谢

原文

I have struts 2 checkboxlist as followed:

<s:checkboxlist list="listOfOptions" name="someName" />

I would like to add validation to make sure that at least ONE of the checkboxes has been checked. Any thoughts?

Thanks

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清君侧 2024-08-29 23:50:40

我使用 JS 来做到这一点。

<sx:submit 
            id="button_submit"
            name="button_submit"
            onclick="return validateNotEmptyCheckbox();" />

JS：

function validateNotEmptyCheckbox() {
    var checkboxes = document.getElementsByTagName('input');
    for (i = 0; i < arguments.length; i++) {
        var fieldName = arguments[i];
        var atLeastOne = false;
        for (j = 0; j < checkboxes.length; j++) {
            if ((checkboxes[j].type == "checkbox" || checkboxes[j].type == "radio")
                    && checkboxes[j].name == fieldName
                    && checkboxes[j].checked == true)
                atLeastOne = true;
        }
        if (atLeastOne == false) {
            alert("Choose one!!!");
            return false;
        }
    }
}

也适用于单选按钮，如您所见。

I use JS to do that.

<sx:submit 
            id="button_submit"
            name="button_submit"
            onclick="return validateNotEmptyCheckbox();" />

And JS:

function validateNotEmptyCheckbox() {
    var checkboxes = document.getElementsByTagName('input');
    for (i = 0; i < arguments.length; i++) {
        var fieldName = arguments[i];
        var atLeastOne = false;
        for (j = 0; j < checkboxes.length; j++) {
            if ((checkboxes[j].type == "checkbox" || checkboxes[j].type == "radio")
                    && checkboxes[j].name == fieldName
                    && checkboxes[j].checked == true)
                atLeastOne = true;
        }
        if (atLeastOne == false) {
            alert("Choose one!!!");
            return false;
        }
    }
}

Also for radio buttons, as you can see.

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双手揣兜 2024-08-29 23:50:40

我对表单提交到的操作制定了验证方法。

DeliveryTimesInputList 这里是带有复选框列表中的值的整数列表。

@Override
public void validate() {

    if(deliveryTimesInputList == null || deliveryTimesInputList.isEmpty()){
        addFieldError("deliveryTimesInputList", "Du må velge minst et leveringstidspunkt for dette postnummeret");
    }

}

I made an validation method on the action to whom the form is submitted.

deliveryTimesInputList is here the list of integer with the values from the checkboxlist.

@Override
public void validate() {

    if(deliveryTimesInputList == null || deliveryTimesInputList.isEmpty()){
        addFieldError("deliveryTimesInputList", "Du må velge minst et leveringstidspunkt for dette postnummeret");
    }

}

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や莫失莫忘 2024-08-29 23:50:40

使用以下代码进行struts2 xml验证。复选框List的值存储为字符串。因此，您可以使用requiredstring。

<field name="someName">
  <field-validator type="requiredstring">
     <message>You need to select at least one option</message>
   </field-validator>
  </field>

Use the following code for struts2 xml validation .The value of checkbox List is stored as a string.Hence,you can use requiredstring.

<field name="someName">
  <field-validator type="requiredstring">
     <message>You need to select at least one option</message>
   </field-validator>
  </field>

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