如何使用 JSoup 从 Sports Reference 的数据表中检索数据？

Question

I'm attempting to use JSoup to retrieve the amount of wins for a team from a Sports Reference table.

Specifically, I am trying to receive the following data point highlighted below, with the html code provided

Below is what I have tried already, but I get a null pointer exception when trying to access the text of this element, telling me that my code is likely not parsing the HTML code correctly.

Element wins = document.selectFirst("td[data-stat=\\"wins\\"]");

What I want is for the text of this element to be 34 (or some number depending on the number of wins for the team).

Answer 1

Check what your Document was able to read from page and print it . If it contains HTML content which can be dynamically added by JavaScript by browser, you need to use as tool Selenium not Jsoup.

For reading HTML source , you can write similar to:

import java.io.IOException;
import org.jsoup.Jsoup;

public class JSoupHTMLSourceEx {
    public static void main(String[] args) throws IOException {
        String webPage = "https://www.basketball-reference.com/teams/CHI/2020.html#all_team_misc";
        String html = Jsoup.connect(webPage).get().html();
        System.out.println(html);
    }
}

Since Jsoup supports cssSelector , you can try to get an element like:

public static void main(String[] args)  {
        String webPage = "https://www.basketball-reference.com/teams/CHI/2020.html#all_team_misc";
        String html = Jsoup.connect(webPage).get().html();

Document document = Jsoup.parse(html);
    Elements tds = document.select("#team_misc > tbody > tr:nth-child(1) > td:nth-child(2)");
        for (Element e : tds) {
            System.out.println(e.text());
        }
}

---

But better solution is to use Selenium - a portable framework for testing web applications ( more details about Selenium tool ):

public static void main(String[] args) {
    String baseUrl = "https://www.basketball-reference.com/teams/CHI/2020.html#all_team_misc";
    WebDriver driver = new FirefoxDriver();

    driver.get(baseUrl);
    String innerText = driver.findElement(
        By.xpath("//*[@id="team_misc"]/tbody/tr[1]/td[1]")).getText();  
        System.out.println(innerText); 
    driver.quit();
    }
}

Also you can try instead of:

driver.findElement(By.xpath("//*[@id="team_misc"]/tbody/tr[1]/td[1]")).getText(); 

in this form :

driver.findElement(By.xpath("//[@id="team_misc"]/tbody/tr[1]/td[1]")).getAttribute("innerHTML");

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PS In the future it would be useful to add source links from where you want to get information or at least snippet of the DOM structure instead of image.