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我正在試圖在我們的教育平臺中實現LTI，以便與Java中的QTIWoks連接。QTIWorks LTI請求參數爲空
我有一個簡單的工具，消費者產生下面的HTML表單：
<html>
<head> </head>
<body>
<form action="http://192.168.0.114:8080/qtiworks-engine/lti/domainlaunch" name="ltiLaunchForm" id="ltiLaunchForm" method="post" target="basicltiLaunchFrame" enctype="application/x-www-form-urlencoded" style="display: block;">
<input type="hidden" name="context_id" value="cid-00113">
<input type="hidden" name="context_label" value="SI106">
<input type="hidden" name="context_title" value="Design of Personal Environments 1">
<input type="hidden" name="ext_note" value="Instructor from first course">
<input type="hidden" name="launch_presentation_locale" value="en_us">
<input type="hidden" name="lis_person_contact_email_primary" value="[email protected]">
<input type="hidden" name="lis_person_name_family" value="Instructor">
<input type="hidden" name="lis_person_name_given" value="Siân">
<input type="hidden" name="lis_person_sourcedid" value="school.edu:user">
<input type="hidden" name="resource_link_description" value="This learning space is private">
<input type="hidden" name="resource_link_id" value="res-0012612">
<input type="hidden" name="resource_link_title" value="My Weekly Wiki">
<input type="hidden" name="roles" value="Instructor">
<input type="hidden" name="tool_consumer_info_product_family_code" value="sakai-unit">
<input type="hidden" name="tool_consumer_info_version" value="0.9">
<input type="hidden" name="tool_consumer_instance_description" value="University of School (LMSng)">
<input type="hidden" name="tool_consumer_instance_guid" value="lmsng.school.edu">
<input type="hidden" name="user_id" value="user-0016">
<input type="hidden" name="oauth_callback" value="about:blank">
<input type="hidden" name="custom_simple_key" value="custom_simple_value">
<input type="hidden" name="custom_complex____________key" value="[email protected]#$^*(){}[]½Value">
<input type="hidden" name="lti_version" value="LTI-1p0">
<input type="hidden" name="lti_message_type" value="basic-lti-launch-request">
<input type="hidden" name="oauth_version" value="1.0">
<input type="hidden" name="oauth_nonce" value="Z2WVNEPUZkzsolOe4hRvKbkXtOSmYiyw">
<input type="hidden" name="oauth_timestamp" value="1429793062">
<input type="hidden" name="oauth_consumer_key" value="feras">
<input type="hidden" name="oauth_signature_method" value="HMAC-SHA1">
<input type="hidden" name="oauth_signature" value="g908qTtVGh8MsOgVUdarVlSBmC0=">
<input type="hidden" name="ext_submit" value="Finish Launch">
</form><iframe name="basicltiLaunchFrame" id="basicltiLaunchFrame" src="" width="100%" height="900" scrolling="auto" frameborder="1" transparency="">
</iframe>
<script type="text/javascript">
document.getElementById("ltiLaunchForm").style.display = "none";
nei = document.createElement('input');
nei.setAttribute('type', 'hidden');
nei.setAttribute('name', 'ext_submit');
nei.setAttribute('value', 'FinishLaunch');
document.getElementById("ltiLaunchForm").appendChild(nei);
document.ltiLaunchForm.submit();
</script>
</body>
</html>
然後調用從qtiworks
@RequestMapping(value="/domainlaunch", method=RequestMethod.POST)
public String ltiDomainLevelLaunch(final HttpSession httpSession, final HttpServletRequest request,
final HttpServletResponse response)
throws IOException {
/* Decode LTI launch request, and bail out on error */
final DecodedLtiLaunch decodedLtiLaunch = ltiLaunchService.decodeLtiLaunchData(request, LtiLaunchType.DOMAIN);
if (decodedLtiLaunch.isError()) {
response.sendError(decodedLtiLaunch.getErrorCode(), decodedLtiLaunch.getErrorMessage());
return null;
}
final LtiLaunchData ltiLaunchData = decodedLtiLaunch.getLtiLaunchData();
/* Make sure this is a domain launch */
final LtiUser ltiUser = decodedLtiLaunch.getLtiUser();
final LtiDomain ltiDomain = ltiUser.getLtiDomain();
if (ltiDomain==null) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "The tool consumer has attempted a domain-level launch using a link-level key");
return null;
}
/* Extract/create the corresponding LtiResource for this launch */
final LtiResource ltiResource = ltiLaunchService.provideLtiResource(decodedLtiLaunch); /* (May be null for candidates) */
final UserRole userRole = ltiUser.getUserRole();
if (userRole==UserRole.INSTRUCTOR) {
/* If user is an instructor, we'll forward to the LTI instructor MVC after
* "authenticating" the user by creating and storing an LtiDomainTicket
* in the session */
final LtiAuthenticationTicket ltiDomainTicket = new LtiAuthenticationTicket(ltiUser.getId(), ltiResource.getId(),ltiLaunchData.getLaunchPresentationReturnUrl());
LtiResourceAuthenticationFilter.authenticateUserForResource(httpSession, ltiDomainTicket);
return "redirect:/lti/resource/" + ltiResource.getId();
}
else if (userRole==UserRole.CANDIDATE) {
/* If user is a candidate, then we'll launch/reuse a candidate session */
if (ltiResource==null) {
return "candidateLaunchError";
}
/* Extract relevant data */
final String returnUrl = ltiLaunchData.getLaunchPresentationReturnUrl();
final String lisOutcomeServiceUrl = ltiLaunchData.getLisOutcomeServiceUrl();
final String lisResultSourcedid = ltiLaunchData.getLisResultSourcedid();
/* Launch and redirect to session */
try {
final CandidateSessionTicket candidateSessionTicket = candidateSessionLaunchService.launchDomainLevelLtiCandidateSession(httpSession,
ltiUser, ltiResource, returnUrl, lisOutcomeServiceUrl, lisResultSourcedid);
return GlobalRouter.buildSessionStartRedirect(candidateSessionTicket);
}
catch (final CandidateException e) {
return "candidateLaunchError";
}
}
else {
throw new QtiWorksLogicException("Unexpected LTI userRole " + userRole);
}
}
問題是decodedLtiLaunch.isError()返回true dominlaunch並沒有執行我的要求。
我調試的問題，同時發現HttpServletRequest request在parameterMap的沒有項目
但是，它的工作很好，當請求來自Moodle的（要求的parameterMap的有通過PARAMS）
我怎麼能解決這個問題，請？
在此先感謝。
什麼是錯誤？在黑暗中拍攝：我猜''oauth_signature'在這裏是有罪的。 – Bigood