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copied!<p>While the Apache <code>HttpClient</code> would work, using it from Scala is unidiomatic and verbose, and the <a href="http://dispatch.databinder.net/Dispatch.html" rel="nofollow">Dispatch</a> library provides a nice Scala wrapper that lets you write much more concise code. You could use it like this:</p> <pre><code>import dispatch._ val u = url("https://site.com/logowanie.php") val info = Seq("username" -> "me", "password" -> "secret") val client = new Http client(u << info >>> System.out) </code></pre> <p>This example would simply print the response, but you can easily provide more sophisticated ways of handling the response, and your <code>client</code> now holds the cookies you need to continue interacting with the site.</p> <p>Here's a more complex example that I've used to log in to a system that required me to pick up a generated identifier from the form before logging in:</p> <pre><code>import dispatch._ import dispatch.jsoup.JSoupHttp._ val u = url("https://myuni.edu/something/login") val info = Seq( "username" -> "me", "password" -> "secret", "warn" -> "true", "submit" -> "LOGIN", "execution" -> "e1s1", "_eventId" -> "submit" ) val client = new Http val id = client(u </> (_.select("input[name=lt]").first.attr("value"))) client(u << info :+ ("lt" -> id) >>> System.out) </code></pre> <p>Here I'm using Dispatch's <a href="http://dispatch.databinder.net/JSoup.html" rel="nofollow">JSoup</a> support to parse the form page and pull out the identifier I need, which I can then add to the form parameters when I submit the request.</p>

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