public class DoubanSpider extends Spider {

    public DoubanSpider(String name) {
        super(name);
        this.startUrls(
            "https://movie.douban.com/tag/爱情",
            "https://movie.douban.com/tag/喜剧",
            "https://movie.douban.com/tag/动画",
            "https://movie.douban.com/tag/动作",
            "https://movie.douban.com/tag/史诗",
            "https://movie.douban.com/tag/犯罪");
    }

    @Override
    public void onStart(Config config) {
        this.addPipeline((Pipeline<List<String>>) (item, request) -> log.info("保存到文件: {}", item));
    }

    public Result parse(Response response) {
        Result<List<String>> result   = new Result<>();
        Elements             elements = response.body().css("#content table .pl2 a");

        List<String> titles = elements.stream().map(Element::text).collect(Collectors.toList());
        result.setItem(titles);

        // 获取下一页 URL
        Elements nextEl = response.body().css("#content > div > div.article > div.paginator > span.next > a");
        if (null != nextEl && nextEl.size() > 0) {
            String  nextPageUrl = nextEl.get(0).attr("href");
            Request nextReq     = this.makeRequest(nextPageUrl, this::parse);
            result.addRequest(nextReq);
        }
        return result;
    }

}

public static void main(String[] args) {
    DoubanSpider doubanSpider = new DoubanSpider("豆瓣电影");
    Elves.me(doubanSpider, Config.me()).start();
}