从 springform:select 中获取选定的值并将其用作参数 href

Question

我想知道如何从

中获取选定的值

<springform:select id="novoPlastico" class="input" path="novoPlastico.codPlastico" value="${form.novoPlastico.codPlastico}">
                        <option value=-1>Selecione</option>
                    </springform:select>

和

<td><springform:select id="grupoAfinidade" class="input" path="grupoAfinidade.grp" value="${form.grupoAfinidade.grp}" onchange="carregarNovosPlasticos();">
                    <option value=-1>Selecione</option>
                </springform:select></td>       

并在下面的href中使用这些值

  <a href="${pageContext.request.contextPath}/parametros/migrCanais.do?plastNovo=${
    --HERE I WANT THE FIRST SELECTED VALUE -- }&grp=${ -- HERE I WANT THE SECOND SELECTED VALUE --}" class="bt"><span>Go!</span></a>

编辑 1：

<script type="text/JavaScript" language="JavaScript" src="${pageContext.request.contextPath}/js/jquery-2.1.4.min.js"></script>

jQuery. noConflict();

jQuery("#btConfirma").on("click", function(e) {
    e.preventDefault();

    var value1 = jQuery("#novoPlastico").val();
    var value2 = jQuery("#grupoAfinidade").val();

    window.location.href = ctx + "/parametros/migrCanais.do?plastNovo=" + value1 + "&grp=" + value2;
});

<a id="btConfirma" class="bt" href="#"><span>Confirmar migração de canais de venda</span></a>

Answer 1

首先将此添加到您的 jsp 头元素中：

<script type="text/javascript">var ctx = "${pageContext.request.contextPath}"</script>

之后尝试使用以下 javascript 代码：

$(".bt").on("click", function(e) {
    e.preventDefault();

    var value1 = $("#novoPlastico").val();
    var value2 = $("#grupoAfinidade").val();

    window.location.href = ctx + "/parametros/migrCanais.do?plastNovo=" + value1 + "&grp=" + value2;
})