JavaScript调用Java的方法

在JavaScript中想要调用Java的方法，通过JavaScript访问servlet，再通过servlet调用Java某个类的方法。

HTML代码

<table id="cartTable">
    <thead>
        <tr>
            <th class="product_remove">
                <label>
                    <input class="check-all check" type="checkbox"/>  全选
                </label>
                <a class="fl delete" id="deleteAll" href="javascript:;"><i class="fa fa-trash-o"></i></a>
            </th>
            <th class="product_thumb">图片</th>
            <th class="product_name">名称</th>
            <th class="product-price">价格</th>
             <th class="product_quantity">款式</th>
       </tr>
    </thead>
    <tbody>
        <tr>
            <td class="product_remove">
                <input class="check-one check" type="checkbox"/>
            </td>
            <td class="product_thumb">
                <a href="ShopShoesDetails.jsp?shoes_id=<%=shoes.getShoes_id() %>">
                    <img src="${pageContext.request.contextPath}/ShopServlet?method=getShopsShoesImage&shoes_id=<%=shoes.getShoes_id() %>" alt="">
               </a>
            </td>
            <td class="product_name">
                <a href="ShopShoesDetails.jsp?shoes_id=<%=shoes.getShoes_id() %>"><%=shoes