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POInterceptor prevents URL parameters from being passed to actions
 

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    <p>I've got a LoginInterceptor that runs before most actions and checks if the member is logged in or not. If it is, the page is shown, otherwise it is redirected to login page.</p> <p>However I just noticed the interceptor "blocks" all URL parameters. Basically if there is an interceptor before an action, URL parameters for this action won't be passed to setters.</p> <p>This is my interceptor:</p> <pre><code>public class LoginInterceptor extends AbstractInterceptor { public String intercept(final ActionInvocation invocation) throws Exception { final String REDIR = "loginRedirect"; AuthenticationService auth = new AuthenticationService(); if (auth.isMemberLoggedIn()) { return invocation.invoke(); } else { return REDIR; } } } </code></pre> <p>I suspect the <code>invocation.invoke()</code> invokes the action, but without the parameters.</p> <p>What can I do about it?</p> <p>UPDATE:</p> <p><strong>AuthenticationService.isMemberLoggedIn()</strong></p> <pre><code>public boolean isMemberLoggedIn() { Map&lt;String, Object&gt; session = ActionContext.getContext().getSession(); String username = (String) session.get("username"); if (username != null) { return true; } else { return false; } } </code></pre> <p><strong>struts.xml</strong></p> <pre><code>&lt;package name="global" extends="struts-default"&gt; &lt;interceptors&gt; &lt;interceptor name="loginInterceptor" class="community.interceptor.LoginInterceptor" /&gt; &lt;/interceptors&gt; &lt;global-results&gt; &lt;result name="loginRedirect" type="redirect"&gt;/members/login&lt;/result&gt; &lt;/global-results&gt; &lt;/package&gt; </code></pre> <p>Then each package extends <code>global</code> and I invoke them in each action:</p> <pre><code>&lt;interceptor-ref name="loginInterceptor" /&gt; </code></pre>
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    1. COSomething is amiss here. Could you share your code for `auth.isMemberLoggedIn()`? Also, to be clear, your problem is not that the parameters are gone when the redirect occurs, but that they are gone when the action is invoked, correct?
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    2. COThat is correct. I don't see a need to share the content of `isMemberLoggedIn()` function. It works fine. It is just if the test is passed and `invocation.invoke()` is called the params "disappear".
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    3. COI asked to see its contents since I suppose that it is accessing the HttpServletRequest in some manner, in which case it could be the culprit if not done correctly. But if you are certain, then don;t include it. Could you include your interceptor stack configuration from the struts.xml, though? The missing params could also occur from the `params` interceptor not being included in the stack by accident.
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