[opencms-dev] Setting manual Content-Type header from a jsp

[Joe Campedelli]

Mike, you seem really good at OpenCms are you available to do a migration?

On Tue, Jun 16, 2009 at 11:23 AM, Mike Dikan<dikeman at gmail.com> wrote:
> I found a solution, if anyone encounters the same problem.  After looking
> through the source, It seems like opencms expects you to use CmsJspBean to
> modify SOME PARTS of the response object.  Stephan was right, you can use
> the top response object to add headers like location or content-type, but
> you can only modify the status code by using CmsJspBean.setStatus, as the
> flex cache seems to ignore the status headers set on the response object.
>  Alternatively, you can just set the cache property to 'bypass' on the jsp
> or folder that contains your jsp(s).
> So to get at the methods on CmsJspBean, this was the tag I used:
> <jsp:useBean id="cms"
> class="org.opencms.jsp.CmsJspActionElement"></jsp:useBean>
> <%
>         cms.init(pageContext, request, response);
> %>
> And then it is as easy as calling setStatus or setContentType:
> <%
> cms.setStatus(301);
>         cms.setContentType("text/javascript");
> %>
> If you need to add arbitrary headers into your response, like location, or
> content-type headers, use the top response object as suggested by Stephan:
> <%@page import="org.opencms.flex.*" %>
> <%
> HttpServletResponse topLevelResponse =
> CmsFlexController.getController(request).getTopResponse();
> topLevelResponse.setHeader("Location", "http://www.google.com/" );
>         topLevelResponse.setHeader("Content-Type", "text/javascript");
> %>
> So, to send a 301 redirect, use the setStatus method from CmsJspBean, and
> the setHeader method from the top response object. I didn't mention in my
> earlier post that I was trying to find a way to accomplish both of these
> tasks (for different pages).
>
> -Mike
> On Jun 15, 2009, at 6:19 PM, Mike Dikan wrote:
>
> Sorry, just found the static CmsFlexController.getController(request) method
> to answer the first part of my last email.
> As for the second part, I attempted this:
> HttpServletResponse topLevelResponse =
> CmsFlexController.getController(request).getTopResponse();
>
> But calls to modify the headers on topLevelResponse don't seem to be taking
> effect.
> Any pointers?
> -Mike
> On Jun 15, 2009, at 5:01 PM, Stephan Hartmann wrote:
>
> Hi Mike,
>
> the reason why your attempts for setting the content type by either
> using the response object or the contentType attribute in the page
> directive is that the JSP is usually embedded by using the include
> dispatcher of the request. From within an included webapp resource
> (either servlet or JSP or filter) there is no way to modify response
> headers, as defined in the servlet spec.
> For your case, it would be sufficent to set the cache property of your
> JSP to "bypass" which will lead to a forward instead of an include, what
> will give you control over your response headers as well. Note that you
> will lose flex cache functionality with that property set.
> Another way to set response headers from an included JSP would be to get
> hold of the top response object through the CmsFlexController object of
> your request.
>
> Regards,
> Stephan
>
> Mike Dikan schrieb:
>
> I have need for a jsp that spits out dynamic javascript called
>
> something like javascript_dynamic_variable_init.jsp.  In opencms, if
>
> you have a file on the vfs that has extension .js, the content-type
>
> header that is returned is of type 'application/x-javascript', and if
>
> you have a file that ends in extension .jsp, the content-type header
>
> is 'text/html'.  I need to change the content-type header returned for
>
> a file ending in .jsp to the .js header, but any attempts to do so
>
> either by using the <%@page contentType="" %> tag, or operating on the
>
> response directly is clobbered by opencms.  Does anyone know how to do
>
> this in opencms 7.0.5?
>
> And to head off any questions, i can't rename the file to .js, because
>
> the file needs to be brought in as a jsp opencms 'type' via the
>
> synchronize functionality, which will only create types based on file
>
> extensions, as far as I know.
>
> Thanks!
>
> -Mike
>
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