code error 403

Question

請求這是為什麽？

FilePipeline filePipeline = new FilePipeline("F://webmagic//");
Spider.create(
                new SimplePageProcessor("http://www.openrice.com/macau/",
                        "http://www.openrice.com/macau/*"))
                .addPipeline(filePipeline).thread(5).run();

10:11:04,030  INFO Spider:306 - Spider www.openrice.com started!
10:11:04,034  INFO HttpClientDownloader:80 - downloading page http://www.openrice.com/macau/
10:11:04,070  WARN HttpClientDownloader:96 - code error 403 http://www.openrice.com/macau/

Answer 1

引用来自“黄亿华”的评论

不设置为""默认是Apache HttpClient，太明显了，所以还是设置比较好…

Answer 2

不设置为""默认是Apache HttpClient，太明显了，所以还是设置比较好…

Answer 3

private CloseableHttpClient generateClient(Site site) {
        HttpClientBuilder httpClientBuilder = HttpClients.custom()
                .setConnectionManager(connectionManager);
        if (site != null && site.getUserAgent() != null) {
            httpClientBuilder.setUserAgent(site.getUserAgent());
        } else {
            httpClientBuilder.setUserAgent("");

        }

原來是這句問題，不太理解，既然不用UserAgent了，還需要set為""嗎？