使用jSoup从表中获取数据

Question

I am looking to get data from the table on http://www.sportinglife.com/greyhounds/abc-guide using jSoup. I would like to put this data into some kind of table within my java program that I can then use in my code.

I'm not too sure how to do this. I have been playing around with jSoup and currently am able to get each cell from the table to print out using a while loop - but obviously can't use this always as the number of cells in the table will change.

    Document doc = Jsoup.connect("http://www.sportinglife.com/greyhounds/abc-guide").get();
    int n = 0;
    while (n < 100){
    Element tableHeader = doc.select("td").get(n);


    for( Element element : tableHeader.children() )
    {
        // Here you can do something with each element
        System.out.println(element.text());
    }
    n++;
    }

Any idea of how I could do this?

Answer 1

There are just a few things you have to implement to achieve your goal. Take a look on this Groovy script - https://gist.github.com/wololock/568b9cc402ea661de546 Now lets explain what we have here

List<Element> rows = document.select('table[id=ABC Guide] > tbody > tr')

Here we're specifying that we are interested in every row tr that is immediate child of tbody which is immediate child of table with id ABC Guide . In return you receive a list of Element objects that describes those tr rows.

Map<String, String> data = new HashMap<>()

We will store our result in a simple hash map for further evaluation eg putting those scraped data into the database.

for (Element row : rows) {
    String dog = row.select('td:eq(0)').text()
    String race = row.select('td:eq(1)').text()

    data.put(dog, race)
}

Now we iterate over every Element and we select content as a text from the first cell: String dog = row.select('td:eq(0)').text() and we repeat this step to retrieve the content as a text from the second cell: String race = row.select('td:eq(1)').text() . Then we just simply put those data into the hash map. That's all.

I hope this example with provided description will help you with developing your application.

EDIT:

Java code sample - https://gist.github.com/wololock/8ccbc6bbec56ef57fc9e