On 4/2/07, Dave, Tejas <[EMAIL PROTECTED]> wrote:
No I am not using VelocityViewServlet or the VelocityServlet. My current
webapp set up is.
then Velocity will not automatically find your velocity.properties.
instead of calling Velocity.init(), you need to call
Velocity.init("path/to/WEB-INF/velocity.properties"). or otherwise
use the Velocity api to set properties manually or load them via a
Properties or ExtendedProperties file.
WEB-INF<root>
| web.xml
| velocity.properties
|_/templates
|
|_template.vm
Web.xml has following entry:
<init-param>
<param-name>velocity-properties</param-name>
<param-value>/velocity.properties</param-value>
</init-param>
this init-param is useless, unless your servlet knows how to use it to
initialize Velocity. Velocity itself knows nothing about servlets or
init-params.
Velocity.properties has the following entry:
webapp.resource.loader = /templates
webapp.resource.loader.class =
org.apache.velocity.tools.view.servlet.WebappLoader
this is not at all how you configure resource loaders, why just guess
when you can read the documentation? (see the section on configuring
resource loaders here:
http://velocity.apache.org/engine/devel/developer-guide.html and the
poorly written javadoc for the WebappLoader here:
http://velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/view/servlet/WebappLoader.html)
first, name the resource loaders you plan to use, then specify their
class and any base path to the templates
resource.loader = webapp
webapp.resource.loader.class =
org.apache.velocity.tools.view.servlet.WebappLoader
webapp.resource.loader.path = /WEB-INF/templates
please note that the path for the webapp loader needs to be the whole
path from the root of the servlet context, not the path from the root
of the WEB-INF directory.
Velocity initialization:
Velocity.init();
So how can I use WebappLoader to find the template(*.vm)
Thanks in advance for the response
Tejas
-----Original Message-----
From: Nathan Bubna [mailto:[EMAIL PROTECTED]
Sent: Friday, March 30, 2007 7:30 PM
To: Velocity Users List
Subject: Re: Velocity template file path
On 3/28/07, Dave, Tejas <[EMAIL PROTECTED]> wrote:
> Hi All,
>
> I followed your discussion here but I have a question? Once
> velocity.properties file has webapp.resource.loader.path = /templates
> variable how does the web.xml file know to read from the
> velocity.properties.
If you are using the VelocityViewServlet from VelocityTools 1.3, you
need only place your velocity.properties file in the /WEB-INF
directory of your webapp. The VelocityViewServlet will automatically
check for the file at /WEB-INF/velocity.properties.
If you are using an earlier version of VelocityTools, then you need to
tell the VelocityViewServlet where to look by adding an init-param to
the servlet config in your web.xml with the name of
org.apache.velocity.properties with the value being the path from the
root of the webapp to your velocity.properties file. Examples of
this can be found in the example applications that come with the
VelocityTools 1.2 distributions.
> Do we invoke/initalise velocity in any particular way?
Yes, look at the source code for VelocityViewServlet's
initVelocity(ServletConfig) method to see what needs to happen. It is
particularly important that the ServletContext be placed in the
VelocityEngine's application attributes (using
"javax.servlet.ServletContext" as the key) so the WebappLoader can
find it.
> How does the WebappLoader finds the template and the template can
> be read?
The WebappLoader appends the name of the requested template to the
configured search path(s) for the loader and requests the resulting
file path from servletContext.getResourceAsStream(path).
> I have similar web-app setup and want to place template file in
> templates directory under the web-inf folder of webapp. Currently I
> also face the issue that template file cant be found. Please guide me.
are you using the VelocityViewServlet? if not, how are you
configuring your VelocityEngine (or the singleton, if that's what
you're using)? what are your velocity.properties?
> Thanks,
> Tejas
> [EMAIL PROTECTED]
>
> -----Original Message-----
> From: Nathan Bubna [mailto:[EMAIL PROTECTED]
> Sent: Thursday, March 08, 2007 11:26 PM
> To: Velocity Users List
> Subject: Re: Velocity template file path
>
> you need to configure the singleton to use the WebappLoader as its
> resource loader in your velocity.properties and put the
> ServletContext into the singleton's application attributes before
> calling init(properties). see:
>
>
http://svn.apache.org/viewvc/velocity/tools/trunk/src/java/org/apache/ve
> locity/tools/view/servlet/WebappLoader.java?view=markup
>
> for why the ServletContext is needed, and the initVelocity(config)
> method of
>
>
http://svn.apache.org/viewvc/velocity/tools/trunk/src/java/org/apache/ve
>
locity/tools/view/servlet/VelocityViewServlet.java?revision=488468&view=
> markup
>
> for an example of adding the ServletContext to the application
> attributes.
>
> On 3/8/07, George, Nixon <[EMAIL PROTECTED]> wrote:
> > Thank you, that helped fix the problem. Can I use the same strategy
of
> > webapploader in another webapp that uses the Singleton model (and
not
> > VelocityViewServlet)? Igave it a shot but looks like just calling
> > Velocity.init() is not enough.
> >
> > -----Original Message-----
> > From: Nathan Bubna [mailto:[EMAIL PROTECTED]
> > Sent: Wednesday, March 07, 2007 5:53 PM
> > To: Velocity Users List
> > Subject: Re: Velocity template file path
> >
> > On 3/7/07, George, Nixon <[EMAIL PROTECTED]> wrote:
> > > I am using the VelocityViewServlet. I tried specifying the
template
> > > folder as part of setting the default path in this code:
> > >
> > > protected ExtendedProperties
loadConfiguration(ServletConfig
> > > config)
> > > throws
> > > IOException {
> > > ExtendedProperties p = new ExtendedProperties();
> > >
> > > String path = config.getServletContext().getRealPath("/");
> > > if (path == null){
> > > path = "/";
> > > }
> > > p.setProperty(Velocity.FILE_RESOURCE_LOADER_PATH,
> > > path+"\\templates\\");
> > >
> > > return p;
> > > }
> >
> > no, the VelocityViewServlet doesn't use the FileResourceLoader, it
> > uses the WebappLoader. you also don't need to override
> > loadConfiguration() method. just create a velocity.properties file
at
> > "/WEB-INF/velocity.properties" that contains the line:
> >
> > webapp.resource.loader.path = /templates
> >
> > (or something like that)
> >
> > oh, and be sure that you are using VelocityTools 1.3, as the earlier
> > versions require you to tell the VelocityViewServlet where your
> > velocity.properties file is located explicitly. the default
location
> > is new to 1.3.
> >
> > > But that didn't seem to work. If I put all the templates in the
> webapp
> > > root, everything is dandy but it does not seem to like the way I
am
> > > specifying the template path. Also, I had to put the double
> > backslashes
> > > because I am on a windows env.
> > >
> > > BTW, I searched for the WebappLoader tool but could not find it.
> Could
> > > you send me the URL? Thanks.
> >
> > if you are using the VelocityViewServlet, it uses it by default.
> >
> > javadoc is here:
> >
>
http://velocity.apache.org/tools/releases/1.3/javadoc/org/apache/velocit
> > y/tools/view/servlet/WebappLoader.html
> >
> >
> > > -----Original Message-----
> > > From: Nathan Bubna [mailto:[EMAIL PROTECTED]
> > > Sent: Wednesday, March 07, 2007 5:06 PM
> > > To: Velocity Users List
> > > Subject: Re: Velocity template file path
> > >
> > > - What servlet are you using? The VelocityServlet (which is
> > > deprecated) or the VelocityViewServlet (which is part of
> VelocityTools
> > > and is the replacement for the VelocityServlet)?
> > >
> > > - Use of the FileResourceLoader in a webapp environment is not
> > > recommended. The VelocityTools project comes with a WebappLoader
> that
> > > is much better for webapps.
> > >
> > > - If your templates are in /webapp/templates, then that is where
you
> > > should point the resource loader; it would not be enough to point
it
> > > at the webapp root and expect it to look for a "templates" folder
> > > automatically.
> > >
> > > - For examples of how to configure and use the
VelocityViewServlet,
> > > you might consider checking out the example applications that come
> > > with VelocityTools.
> > >
> > >
> > > On 3/7/07, Nixon Sunny <[EMAIL PROTECTED]> wrote:
> > > > I am using the file resource loader to get the template. But, I
am
> > > having
> > > > problems accessing it. Keeps getting error...
> > > >
> > > > org.apache.velocity.exception.ResourceNotFoundException: Unable
to
> > > find
> > > > resource 'products.vm'
> > > >
> > > > My webapp structure is:
> > > >
> > > > webapp<root>
> > > > |
> > > > -- templates
> > > >
> > > > All my .vm files are inside the templates directory. I have
> > overridden
> > > the
> > > > loadConfiguration() method to make the webapp root as my default
> > file
> > > load
> > > > path. But, I guess thats not enough to point to the
> > /webapp/templates
> > > > directory. What am I missing?
> > > >
> > > > Thanks.
> > > >
> > > >
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> >
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