如果我理解正确这是正确的方式，首先你需要在Word中创建菜单按管理菜单空白菜单.现在去function.php文件（主题文件）添加以下代码.
您可以通过此功能获取产品类别列表，

function get_product_terms( $term_id ) {

        $html = '';

        $args = array( 'hide_empty' => 0, 'parent' => $term_id );

        $terms = get_terms('product_cat', $args);

        foreach ($terms as $term) {

            $html .= '<li';

            if( $term_id == 0 ) {

                $html .= ' class="top_li"';

            }

            $html .= '><a href="'.get_term_link($term->slug, 'product_cat').'">' . $term->name . '</a>';    

            if( $list = get_product_terms( $term->term_id )) {

                $html .= '<ul class="second_level">'.$list.'</ul>';

            }

            $html .= '</li>';

        }

        return $html;

    }

您可以使用此功能将产品类别添加到菜单中，

// Filter wp_nav_menu() to add additional links and other output
function new_nav_menu_items($items) {
    // Woo function

    /*//product_cat
    $terms = get_terms( 'product_cat', $args );
    print_r($terms);*/
    if( $list = get_product_terms( 0 )) {


    $menu1link = '<li class="home"><a href="' . home_url( '/' ) . '">' . __($list) . '</a></li>';
    $homelink = '<li class="home"><a href="' . home_url( '/' ) . '">' . __('Home') . '</a></li>';
    // add the home link to the end of the menu
    $items = $items . $homelink;
    $items = $items .$menu1link;
    }
    return $items;

}
add_filter( 'wp_nav_menu_items', 'new_nav_menu_items' );

在单个产品页面上显示类别图像

$terms = get_the_terms( $post->ID, 'product_cat' );
foreach ( $terms as $term ){
  $category_name = $term->name;
  $category_thumbnail = get_woocommerce_term_meta($term->term_id, 'thumbnail_id', true);
  $image = wp_get_attachment_url($category_thumbnail);
  echo '<img class="absolute category-image" src="'.$image.'">';
}

<?php
                 $terms = get_the_terms( $post->ID, 'product-category' );

                foreach ( $terms as $term ){
               $category_name = $term->name;
             $category_thumbnail = get_woocommerce_term_meta($term->term_id, 'thumbnail_id', true);
            $image = wp_get_attachment_url($category_thumbnail);
                  ?>
            <div class="col-md-4 col-sm-4 col-xs-12">
                <a href="">
                <div class="service wow slideInLeft">
                    <div class="icon"><img src="<?php bloginfo('template_url'); ?>/images/buiding/icon18.png"></div>
                    <h4><?php echo $category_name; ?></h4>
                </div>
                </a>
            </div>

            <?php }   ?>

我已经添加了此代码。但不工作。它显示一个错误，如“警告：为文件中的foreach（）提供的参数无效”

很老的帖子，但如果有人仍然在寻找答案，我这样做：

<?php
                        
    $orderby = 'name';
    $order = 'asc';
    $hide_empty = false;
    $cat_args = array(
          'orderby' => $orderby,
          'order' => $order,
           'hide_empty' => $hide_empty,
    );
    $product_categories = get_terms('projects-category', $cat_args); //your custom category taxonomy
    //var_dump($product_categories); //do var_dump in order to get the '_category_options', that I have
    if (!empty($product_categories)) {
       foreach ($product_categories as $key => $category) {
            $term_image = get_term_meta($category->term_id, '_category_options', true);
            $url = wp_get_attachment_image_src($term_image['category_image'], array(678, 420) ); //custom display image dimensions, according to your needs
?>
<img src="<?php echo $url[0]; ?> width="<?php echo $url[1]; ?>" height="<?php echo $url[2]; ?>" />
<?php
             } //end foreach loop
       } //end if
?>