[opencms-dev] write access to file

Thu Oct 27 10:17:50 CEST 2016

Hi again,

Sorry it didn't fix your problem. As it turns out, I was half wrong.

Just tested the following code and it runs without errors Offline, Online and logged-out:

CmsJspActionElement cms = new CmsJspActionElement(pageContext, request, response);
CmsObject cmso = cms.getCmsObject();

// cmso.loginUser("usr", "pwd");

// NOTE: replace getCurrentProject() with currentProject() on older versions
if (cms.getRequestContext().getCurrentProject().isOnlineProject()) {
cms.getRequestContext().setCurrentProject(cmso.readProject("Offline"));
}
out.println("Now in " + cms.getRequestContext().getCurrentProject().getName() + " project.");

HOWEVER: If you wanted to actually *do* something though, like write to a file, you'd need to login first. Otherwise, your code would work Offline & Online (with your user). But it would not work logged-out (with the Guest user) – you'd just get a 500 Server Error. Sound familiar?

When code runs fine in the Online project, but not when logged-out, that's a strong indication of a problem related to the current user and that user's privileges.

I'm not convinced that the project switching is your actual problem. To me, it seems likely to be something else.

To test this, you could try running the code above in a standalone JSP. No error means your problem is elsewhere. In that case, you could gradually expand the standalone test JSP, in small steps, toward looking like your actual problem JSP. First add a small bit (e.g. include the login). Then do a test. Then add another bit (e.g. write a file, see http://www.opencms-wiki.org/wiki/Modify_file_content_programatically). Then test again. And so on. Eventually you should be able to identify the culprit.

PS: If your access to the actual system is limited, have you considered testing on a local OpenCms installation?

HTH :)

Best regards,
Paul

From: opencms-dev-bounces at opencms.org [mailto:opencms-dev-bounces at opencms.org] On Behalf Of Qi Zhang
Sent: 26. oktober 2016 19:07
To: The OpenCms mailing list <opencms-dev at opencms.org>
Subject: Re: [opencms-dev] write access to file

ahh sorry, it works fine for loging. Just not work when combining with switching context code..

2016-10-26 19:02 GMT+02:00 Qi Zhang <kksjtu at gmail.com<mailto:kksjtu at gmail.com>>:
Hi Paul,
I tried:
CmsObject cmso = cms.getCmsObject();
cmso.loginUser("myUserName","myPassword");
It still: works fine in offline&online project, but got HTTP500 error in actual webpage..(without adding the switching context code yet) :(

But thanks a lot for help

2016-10-26 17:42 GMT+02:00 Paul-Inge Flakstad <flakstad at npolar.no<mailto:flakstad at npolar.no>>:
Hi,

I may be wrong here, but I'm guessing it's because the Guest user cannot switch to the Offline project. (Keep in mind that your CmsObject is initialized with a user.) This would explain why it works when you test it with your user in the Online project, but fails in the actual online version.)

Try switching to a user with sufficient privileges before you switch to the Offline project.

Best regards,
Paul

From: opencms-dev-bounces at opencms.org<mailto:opencms-dev-bounces at opencms.org> [mailto:opencms-dev-bounces at opencms.org<mailto:opencms-dev-bounces at opencms.org>] On Behalf Of Qi Zhang
Sent: 26. oktober 2016 17:29
To: Christoph Kukulies <kuku at physik.rwth-aachen.de<mailto:kuku at physik.rwth-aachen.de>>
Cc: The OpenCms mailing list <opencms-dev at opencms.org<mailto:opencms-dev at opencms.org>>
Subject: Re: [opencms-dev] write access to file

Other pages are all fine. Just this one after clicking submit button..
I have checked,as long as I have these lines of code. I have the error:

if(curProject.isOnlineProject()){
            CmsProject offlineProject = cmso.readProject("Offline");
            cmsContext.setCurrentProject(offlineProject);
       }
But isn't it the only way to have write access to files? Does it mean we can't change to offline context in published webpage?

Here are some related code:
CmsJspActionElement cms = new CmsJspActionElement(pageContext, request, response);
CmsObject cmso = cms.getCmsObject();

CmsRequestContext cmsContext = cmso.getRequestContext();
CmsProject curProject = cmsContext.currentProject();

2016-10-26 14:26 GMT+02:00 Christoph Kukulies <kuku at physik.rwth-aachen.de<mailto:kuku at physik.rwth-aachen.de>>:
Am 26.10.2016 um 13:09 schrieb Qi Zhang:

Yes, it's a form and the action is a jsp.
Permissions of the jsp?

Do other pages work in www.123.com<http://www.123.com>? Error 500 is "Internal Server Error" which indicates a syntax error in jsp sometimes. It's not just a page not found (404).
You gotta gather more information.

Can you invoke the jsp alone in the browser (possibly passing the neccessary parameters to it).

I'm working for a university. So I have limited permissions. I can only see server internal error HTTP 500 etc when I visit the page and submit form as a guest. Within opencms system all fine.

On 26 Oct 2016 10:16, "Christoph Kukulies" <kuku at physik.rwth-aachen.de<mailto:kuku at physik.rwth-aachen.de>> wrote:
what does the log say (opencms.log, tomcat logs)?
You say, it's a form, right? Is the action a jsp that is invoked?

Am 25.10.2016 um 20:50 schrieb Qi Zhang:
Hi,
the page is visible, just the function doesn't work.There is a webform, after clicking the function should be called. And then the page got a HTTP 500 error..

2016-10-25 19:55 GMT+02:00 Jose Fermin Athie Campollo <athiecampollo at gmail.com<mailto:athiecampollo at gmail.com>>:
Hi,
A few questions:
Do you use a balancer or is the server of opencms who resolve the domain?
If it is from opencms you have to set the new domain http://www.opencms-wiki.org/wiki/MultiSite_configuration_instructions

In www.123.com<http://www.123.com> is the only page they can not see?

Regards

El mar., 25 de oct. de 2016 a la(s) 11:53, Qi Zhang <kksjtu at gmail.com<mailto:kksjtu at gmail.com>> escribió:
Hi,
thanks for the help!
Yes, I was coding according to the 1st documentation. But my problem is

http://opencms.123.com/index.html（offline）
works!
http://opencms.123.com/index.html（online）
works!
http://www.123.com/index.html（online）
NOT working!
Do you have any idea why it happen?

2016-10-25 5:35 GMT+02:00 Jose Fermin Athie Campollo <athiecampollo at gmail.com<mailto:athiecampollo at gmail.com>>:
Hi

Right now i can't see this page. http://www.opencms-wiki.org/wiki/Write_a_file_programatically in it you could find a way to create a resource and then publish it
Some one else publish the code to create a resource http://opencms.996256.n3.nabble.com/Create-resource-programatically-td15459.html

You should see the javadoc of CmsObject  you can do a lot of thing with it.

Regards

--
Best regards,
Qi Zhang

--
Chris Christoph P. U. Kukulies kukulies (at) rwth-aachen.de<http://rwth-aachen.de>

--
Best regards,
Qi Zhang

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Qi Zhang

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Best regards,
Qi Zhang
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