可以使用get\\u terms（）和循环获取产品类别。

<?php
$cat_args = array( \'orderby\' => \'name\', \'order\' => \'asc\', \'hide_empty\' => true);
$cats = get_terms( \'product_cat\', $cat_args );
foreach ($cats as $key => $cat):
  if ($cat->parent == 0): ?>
    <a href="<?php echo get_term_link($cat) ?>"><?php echo $cat->name; ?></a> <?php
  endif;
endforeach;

这将返回类别（“第一代”），为了拥有子类别，我们只需要在现有的循环中添加一个新的循环。下一个代码一直持续到第三代。

<?php
$cat_args = array( \'orderby\' => \'name\', \'order\' => \'asc\', \'hide_empty\' => true);
$cats = get_terms( \'product_cat\', $cat_args );
foreach ($cats as $key => $cat):
  if ($cat->parent == 0): ?>
    <a href="<?php echo get_term_link($cat) ?>"><?php echo $cat->name; ?></a> <?php
    foreach ($cats as $key => $cat2):
      if ($cat2->parent == $cat->term_id): ?>
        <a href="<?php echo get_term_link($cat2) ?>"><?php echo $cat2->name; ?></a> <?php
        foreach ($cats as $key => $cat3):
          if ($cat3->parent == $cat2->term_id): ?>
            <a href="<?php echo get_term_link($cat3) ?>"><?php echo $cat3->name; ?></a><?php
          endif;
        endforeach;
      endif;
    endforeach; 
  endif;
endforeach;

这只显示包含产品的类别，所有类别只需将第一行的“hide\\u empty”更改为false。

要显示类别或子类别的产品名称，我们可以使用此功能。

<?php
function get_prod($prod_per_page, $prod_slug){
  $args = array( \'posts_per_page\' => $prod_per_page,
                 \'tax_query\' => array(
                 \'relation\' => \'AND\',
                  array(\'taxonomy\' => \'product_cat\',
                        \'field\' => \'slug\',
                        \'terms\' => $prod_slug
                      )
                  ),
                  \'post_type\' => \'product\',
                  \'orderby\' => \'title\'
          );
  $products = new WP_Query( $args );
  echo "<ul>";
  while ( $products->have_posts() ) {
      $products->the_post(); ?>
          <li>
              <a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
          </li> <?php
  }
  wp_reset_postdata(); 
  echo "</ul>";
}

现在，我们可以在a标签旁边添加此自定义函数，该函数有2个参数，首先是要显示的产品数量，其中-1是全部，例如，对于4个产品，是4，第二个是类别slug。

这里是答案，现在您可以删除第3个“；“生成”；如果不需要，请更改类别，并更改每页显示的产品数量。

<?php
function get_prod($prod_per_page, $prod_slug){
  $args = array( \'posts_per_page\' => $prod_per_page,
                 \'tax_query\' => array(
                 \'relation\' => \'AND\',
                  array(\'taxonomy\' => \'product_cat\',
                        \'field\' => \'slug\',
                        \'terms\' => $prod_slug
                      )
                  ),
                  \'post_type\' => \'product\',
                  \'orderby\' => \'title\'
          );
  $products = new WP_Query( $args );
  echo "<ul>";
  while ( $products->have_posts() ) {
      $products->the_post(); ?>
          <li>
              <a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
          </li> <?php
  }
  wp_reset_postdata(); 
  echo "</ul>";
}
$cat_args = array( \'orderby\' => \'name\', \'order\' => \'asc\', \'hide_empty\' => true);
$cats = get_terms( \'product_cat\', $cat_args );
foreach ($cats as $key => $cat):
  if ($cat->parent == 0): ?>
    <a href="<?php echo get_term_link($cat) ?>"><?php echo $cat->name; ?></a> <?php
    get_prod(-1, $cat->slug);
    foreach ($cats as $key => $cat2):
      if ($cat2->parent == $cat->term_id): ?>
        <a href="<?php echo get_term_link($cat2) ?>"><?php echo $cat2->name; ?></a> <?php
        get_prod(10, $cat2->slug);
        foreach ($cats as $key => $cat3):
          if ($cat3->parent == $cat2->term_id): ?>
            <a href="<?php echo get_term_link($cat3) ?>"><?php echo $cat3->name; ?></a><?php
            get_prod(4, $cat3->slug);
          endif;
        endforeach;
      endif;
    endforeach;
  endif;
endforeach;

这个get\\u prod（）的第一个参数是更改每个人想要显示的产品数量。

可以添加html、css或javascript！希望对您有所帮助！