如何使用jsoup从html中的< form action =中提取链接 [英] How to extract a link from <form action= in html with jsoup

问题描述

我一直在尝试从网站的html源中提取链接，但是我无法获取它来打印出结果.我对提取链接有些陌生，因此我的代码可能全都错了(任何澄清都会有所帮助).我期待输出的链接

您可以轻松地使用具有不同产品ID和数量的相同链接.请记住，如果您要提出其他要求(例如，检查购物篮中的物品)，则还应传递从先前请求中获得的Cookie.没有那个，你的篮子将永远是空的.

I have been trying to extract a link from the html source of a website, but I cant get it to print out the result. I'm somewhat new to extracting links so my code could be all wrong (Any clarification would be helpful). The link I'm looking to output is https://shop.ccs.com/checkout/cart/add/uenc/aHR0cHM6Ly9zaG9wLmNjcy5jb20vaGFwcHktc29ja3Mtd2l6LWtoYWxpZmEtYmxhY2stYW5kLWJsdWUtc29ja3MtOS0xMQ,,/product/383628/ from the productUrl https://shop.ccs.com/happy-socks-wiz-khalifa-black-and-blue-socks-9-11

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.ListIterator;
import java.util.Map;
import java.util.Scanner;
import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.jsoup.Connection.Method;

public class mains {
    public static void main(String[] args) throws IOException {
        Document doc = Jsoup.connect(productUrl)
                .userAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36")
                .get();
        Elements links = doc.select("form[action]");
        Elements imports = doc.select("link[action]");
        String absHref = links.attr("abs:action");
        System.out.println(absHref);
    }
}

解决方案

The short answer is if you want to add product to the basket you can just visit this URL: https://shop.ccs.com/checkout/cart/addAjax/?product=383628&related_product=&qty=1

The long answer is this site submits a form to an URL which has no real HTML content but uses javascript to process your request further. Jsoup can't handle that but we can cheat and use web browser's debugger to peek what happens next and that's how I obtained the URL above.

You can easily use the same link with different product id and quantity. Remember that if you want to make another request for example to check your basket contents you should also pass cookies obtained from previous request. Without that your basket will always be empty.

这篇关于如何使用jsoup从html中的< form action =中提取链接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！