使用干净的wordpress安装、woocommerce和店面主题，我想出了这段代码。

它只对常规产品和可变产品进行分类。仅在管理面板中排序。按权重从hgih到low排序（您可以查看已注释的部分，您可以取消对相关选项的注释）。

代码进入functions.php

add_filter(\'woocommerce_order_get_items\', \'bt_sort_woo_order_by_weight\', 10, 3);
function bt_sort_woo_order_by_weight ($items, $_this, $types) {
    if (!is_admin()) return $items;
    if (isset($types[0]) && $types[0] !== \'line_item\') return $items;

    $items_sorted_by_weight = [];

    foreach ($items as $item_id => $item) {
        // get variation or product id, starting with variation
        $id = !empty($item->get_variation_id()) ? $item->get_variation_id() : $item->get_product_id();

        // get product
        $product = wc_get_product($id);

        // in case the product/variation no longer exist OR product is not variable or simple
        if (empty($product) || !in_array($product->get_type(), [\'variation\', \'simple\'])) {
            $items_sorted_by_weight[] = [
                \'weight\' => 0,
                \'item\'   => $item
            ];

            continue;
        }

        $items_sorted_by_weight[] = [
            \'weight\' => floatval($product->get_weight()),
            \'item\'   => $item
        ];
    }

    // sort by weight
    usort($items_sorted_by_weight, function($a, $b) {
        //return $a[\'weight\'] <=> $b[\'weight\']; // low to high
        return $b[\'weight\'] <=> $a[\'weight\']; // high to low
    });

    // set each sorted element to contain only the item, nothing else
    foreach ($items_sorted_by_weight as &$item) {
        $item = $item[\'item\'];
    }

    // in case nothing worked set the sorted variable to contain default items
    if (empty($items_sorted_by_weight)) $items_sorted_by_weight = $items;

    return $items_sorted_by_weight;
}