如何在Spring MVC（Eclipse）中将同一字段的多个值从JSP发送到控制器？

Question

<div id="clonedInput1" class="clonedInput">
<div>
    <label for="txtCategory" class="">Learning category <span class="requiredField">*</span></label>
    <select class="" name="txtCategory[]" id="category1">
        <option value="">Please select</option>
    </select>
</div>
<div>
    <label for="txtSubCategory" class="">Sub-category <span class="requiredField">*</span></label>
    <select class="" name="txtSubCategory[]" id="subcategory1">
        <option value="">Please select category</option>
    </select>
</div>
<div>
    <label for="txtSubSubCategory">Sub-sub-category <span class="requiredField">*</span></label>
    <select name="txtSubSubCategory[]" id="subsubcategory1">
        <option value="">Please select sub-category</option>
    </select>
</div>
<div class="actions">
    <button class="clone">Clone</button> 
    <button class="remove">Remove</button>
</div>

var regex = /^(.+?)(\d+)$/i;
var cloneIndex = $(".clonedInput").length;

function clone(){
    $(this).parents(".clonedInput").clone()
        .appendTo("body")
        .attr("id", "clonedInput" +  cloneIndex)
        .find("*")
        .each(function() {
            var id = this.id || "";
            var match = id.match(regex) || [];
            if (match.length == 3) {
                this.id = match[1] + (cloneIndex);
            }
        })
        .on('click', 'button.clone', clone)
        .on('click', 'button.remove', remove);
    cloneIndex++;
}
function remove(){
    $(this).parents(".clonedInput").remove();
}
$("button.clone").on("click", clone);

$("button.remove").on("click", remove);

Answer 1

将输入字段的名称从“name[]”更改为简单的“name”。

Spring MVC将所有值绑定到form对象中的字符串集合。

例如：

public class FormObject {
    private List<String> txtCategory;
    private List<String> txtSubCategory;

    // get + set

}