Jsp 禁用单选按钮无法正常工作

我在使用单选按钮的禁用属性时遇到问题。所以在我基于when语句的代码中，我需要预选一个单选按钮并禁用它，这样用户就无法更改它。代码在前端运行良好，但当我将表单提交给DB时，该按钮的值变为null

 <c:when test="${DATA_WAREHOUSE != null && DATA_WAREHOUSE == 'CNS' 
                            && DATA_WAREHOUSE_RESPONSE != null && DATA_WAREHOUSE_RESPONSE == 'CNS_0'}">

                            <label for="rMailer" class="radio-wrap">
                                <input type="radio" name="maileraddressee" value="MAI" id="rMailer" checked disabled>
                                I was the mailer
                            </label>
                            <label for="rAddressee" class="radio-wrap">
                                <input type="radio" name="maileraddressee" value="ADD" id="rAddressee" disabled>
                                I was the addressee
                            </label>
                            <input name="mailerAddressee" value="MAI" type="hidden"/>
                        </c:when>

我是邮递员
我是收件人

您不需要禁用选中的单选按钮。如果该组中的其他单选按钮被禁用，则用户将无法取消选中加载页面时选中的单选按钮

<label for="rMailer" class="radio-wrap">
    <input type="radio" name="maileraddressee" value="MAI" id="rMailer" checked="checked">
    I was the mailer
</label>
<label for="rAddressee" class="radio-wrap">
    <input type="radio" name="maileraddressee" value="ADD" id="rAddressee" disabled="disabled">
    I was the addressee
</label>

我是邮递员
我是收件人

如果您现在提交表单，则应获得

maileraddress

的MAI值