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| <h1>session </h1><p class="paragraph"/><h2>Purpose</h2><p class="paragraph"/>The <code>session</code> object is an instance of the Servlet API's <a href="http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/http/HttpSession.html" class="api">HttpSession</a> class<p class="paragraph"/><h2>Examples</h2><p class="paragraph"/><div class="code"><pre>class UserController { |
| def logout = { |
| log.info <span class="java-quote">"User agent: "</span> + request.getHeader(<span class="java-quote">"User-Agent"</span>) |
| session.invalidate() |
| redirect(action:<span class="java-quote">"login"</span>) |
| } |
| def login = {<p class="paragraph"/> } |
| }</pre></div><p class="paragraph"/><h2>Description</h2><p class="paragraph"/>The <a href="http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/http/HttpSession.html" class="api">HttpSession</a> class is useful for associated session data with a client.<p class="paragraph"/>Session attributes which are normally accessible via the <a href="http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/http/HttpSession.html#getAttribute(java.lang.String)" class="api">getAttribute</a> can also be indexed into using the array index operator or de-reference operator:<p class="paragraph"/><div class="code"><pre>def user = session[<span class="java-quote">"user"</span>]<p class="paragraph"/>session[<span class="java-quote">"user"</span>] = <span class="java-quote">"John"</span><p class="paragraph"/>asset <span class="java-quote">"John"</span> == session.user</pre></div><p class="paragraph"/> |
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