How to read HTML attribute value in java?

Question

My question is just very similar to this question Getting an attribute value in xml element

But the file is in Html not xml. The first answer given works for xml file but not html.

<form action="action_page.php">
  First name:<br>
  <input type="text" name="fistname" value="Mickey" />
  <br>
  Last name:<br>
  <input type="text" name="lastname" value="Mouse" />
  <br><br>
  <input type="submit" value="Submit">
</form>

I have to read values inside name attribute. Thanks in advance. This question is different from the link or any other asked on StackOverflow. I have checked.

What framework are you using? How does you Java application consume the html? — Peter Gelderbloem, Oct 19 '16 at 16:54
Use an HTML parser, e.g. [jsoup](https://jsoup.org/) seems popular. — Andreas, Oct 19 '16 at 16:58
I am working on this in purely java. I have a file, I am reading from it via FileInput. — Praveen Rana, Oct 19 '16 at 16:58
What works with xml will also work with html in this case. What have you tried and where did the answer to that question fail you? — f1sh, Oct 19 '16 at 16:58
@f1sh You seem to be assuming that the HTML is XML compliant. — Andreas, Oct 19 '16 at 17:00
@Andreas that's true, I do. But all questions that say "i tried this answer, it didnt work" smells like "i copied it and it didnt run on the first try". — f1sh, Oct 19 '16 at 17:03

Nicolas Filotto · Accepted Answer · 2016-10-20T17:23:50.503

2

You can use a HTML parser like jsoup with the appropriate CSS selector, then get the attribute with attr(attributeKey).

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;

...
Document doc = Jsoup.parse(html);
for (Element input : doc.select("input")){
    System.out.println(input.attr("name"));
}

Output:

fistname
lastname

You can download it from here.

edited Oct 20 '16 at 17:23

answered Oct 19 '16 at 16:59

Nicolas Filotto

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I have never worked with JSoup before. You ran that code?? – Praveen Rana Oct 19 '16 at 17:00
your answer is good enough but i have to typecast the doc , Element , etc. And then I am getting error in eclipse. – Praveen Rana Oct 20 '16 at 17:11
you have only one jar to import into your project with is [this](http://central.maven.org/maven2/org/jsoup/jsoup/1.9.2/jsoup-1.9.2.jar) – Nicolas Filotto Oct 20 '16 at 17:24

score 0 · Answer 2 · answered Oct 19 '16 at 17:08

You can use JSoup to parse Html elements in java. Using Document you can parse html or you can even convert HTML type into string .

Like

Document doc = 

    Jsoup.connect("http://www.javatpoint.com").get();  
                    String title = doc.title();  
                    System.out.println("title is: " + title);

As you said u arenew to jSoup link to it website here you will find documentation on it

JSoup

How to read HTML attribute value in java?

2 Answers2