Java how to manipulate a html text element with dynamic generated name?

- 1 answer

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I want to manipulate or set text in a input type="text" tag on a website. But this input has a dynamic generated name on every load.

How to get and manipulate this element in java?

Here is an example

<form method="POST" name="sform" class="form-horizontal" role="form" style="text-align: center;">
<input type="text" name="address" class="form-control" style="position: absolute; left: -5000px">
<input type="checkbox" name="honeypot" style="position: absolute; left: -5000px">
<center>
<input type="text" name="VHqnx63SwDau2nuNOOFRM2MCJ5sJawbpHv" class="form-control" value="" 
                    placeholder="Type Text here" style="width: 448px; text-align: center;">

The name "VHqnx63SwDau2nuNOOFRM2MCJ5sJawbpHv" is on every new loading the website something else.

I found no really helpful posts to this problem.

Should I maybe use something like jsoup?

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Answer

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Yes, you should definitely use Jsoup.

With Jsoup, it should be as simple as this:

Document doc = Jsoup.connect(url).get();
System.out.println(doc.select("form[name=sform] > center > input").first());

This gets the first input element from the HTML which is a child of a centre element which is in a form element.

Which prints:

<input type="text" name="VHqnx63SwDau2nuNOOFRM2MCJ5sJawbpHv" class="form-control" value="" placeholder="Type Text here" style="width: 448px; text-align: center;">

Jsoup also offers lots of other cool stuff like directly getting or setting attributes, and lots more. So you could do:

Element e = doc.select("form[name=sform] > center > input").first();
e.attr("value", "Something");
System.out.println(e);

Which would print:

<input type="text" name="VHqnx63SwDau2nuNOOFRM2MCJ5sJawbpHv" class="form-control" value="Something" placeholder="Type Text here" style="width: 448px; text-align: center;">

With the value set to "Something".

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source: stackoverflow.com
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