ItemMatcher.java 文件源码

private boolean bookPropertiesMatch(ItemStack itemStack) {
    ItemMeta meta = itemStack.getItemMeta();

    if (meta instanceof BookMeta) {
        BookMeta book = (BookMeta) meta;
        if (bookTitle != null && !bookTitle.equals(book.getTitle())) {
            return false;
        }
        if (bookAuthor != null && !bookAuthor.equals(book.getAuthor())) {
            return false;
        }
        if (bookPages != null && !bookPages.equals(book.getPages())) {
            return false;
        }
    }

    return true;
}