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Posted to user@karaf.apache.org by asookazian2 <as...@gmail.com> on 2014/03/06 01:12:27 UTC
unable to getRealPath for servlet context
I found the following Jetty bug report:
http://jira.codehaus.org/browse/JETTY-675
<http://jira.codehaus.org/browse/JETTY-675>
User states the following:
"ServletContext.getRealPath("") returns null instead of returning the root
dir of the webapp"
I am able to reproduce this behavior in my WAR bundle with MANIFEST.MF (WAB
(WebApplication Bundle)) deployment to Karaf 3.0.0. The version of Jetty is
the following:
karaf@root()> feature:list | grep jetty
cxf-http-jetty | 3.0.0-milestone2 | x |
cxf-3.0.0-milestone2 |
jetty | 8.1.9.v20130131 | x |
standard-3.0.0 |
pax-jetty | 8.1.14.v20131031 | x |
org.ops4j.pax.web-3.0.5 | Provide Jetty engine support
I have tried ServletContext.getRealPath("");
I have also tried ServletContext.getRealPath("/");
Both code lines return null.
Is this expected for this version of Karaf/Jetty? If yes, how can I
determine the real path.
Our scenario involves a properties file that may be installed in
karaf/config/foo directory. We don't want to load/read the file from inside
the WAR (e.g. WEB-INF) b/c the customer may need to change the file.
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RE: unable to getRealPath for servlet context
Posted by asookazian2 <as...@gmail.com>.
Sorry i replied before reading your reply a few mins ago.
I didn't change the karaf.framework to equinox but i basically added the
following dependency to my pom:
<dependency>
<groupId>org.mod4j.org.eclipse.equinox</groupId>
<artifactId>common</artifactId>
<version>3.5.0</version>
</dependency>
and then i added 'WEB-INF/lib/common-3.5.0.jar' to Bundle-ClassPath manifest
header in manifest.mf file.
maybe i still need to make the change for karaf.framework=equinox for this
to work...
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RE: unable to getRealPath for servlet context
Posted by Tom Leung <to...@netage.com.hk>.
It seems that "org.eclipse.osgi.service.urlconversion.URLConverter" cannot
be found,
try to install the following bundle, make sure to find a correct version for
your Equinox
<dependency>
<groupId>org.eclipse.osgi</groupId>
<artifactId>org.eclipse.osgi</artifactId>
</dependency>
-----Original Message-----
From: asookazian2 [mailto:asookazian@gmail.com]
Sent: Thursday, March 06, 2014 2:13 PM
To: user@karaf.apache.org
Subject: RE: unable to getRealPath for servlet context
OK so I made the change in config.properties to point as follows:
karaf.framework=equinox
saved, stopped, started karaf in debug mode
i've attached a debugger session in Eclipse and see now:
url = bundleentry://243.fwk42630947/
so that's not null any more.
now i get the following warning in karaf.log:
2014-03-05 22:04:49,528 | WARN | pool-16-thread-1 | AbstractLifeCycle
| 122 - org.eclipse.jetty.aggregate.jetty-all-server - 8.1.14.v20131031
| |
FAILED HttpServiceContext{httpContext=WebAppHttpContext{com.nextgate.mm.AM -
243}}: java.lang.NoClassDefFoundError:
org.eclipse.osgi.service.urlconversion.URLConverter
java.lang.NoClassDefFoundError:
org.eclipse.osgi.service.urlconversion.URLConverter
at
org.eclipse.core.internal.runtime.Activator.getURLConverter(Activator.java:3
18)
at
org.eclipse.core.runtime.FileLocator.toFileURL(FileLocator.java:205)
any idea how to resolve this?
also it doesn't go into the catch block (I added a brkpt there) and code
execution seems to suddenly stop after this line:
String realPath = FileLocator.toFileURL(url).getPath();
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tp4032109p4032119.html
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RE: unable to getRealPath for servlet context
Posted by asookazian2 <as...@gmail.com>.
OK so I made the change in config.properties to point as follows:
karaf.framework=equinox
saved, stopped, started karaf in debug mode
i've attached a debugger session in Eclipse and see now:
url = bundleentry://243.fwk42630947/
so that's not null any more.
now i get the following warning in karaf.log:
2014-03-05 22:04:49,528 | WARN | pool-16-thread-1 | AbstractLifeCycle
| 122 - org.eclipse.jetty.aggregate.jetty-all-server - 8.1.14.v20131031 |
FAILED HttpServiceContext{httpContext=WebAppHttpContext{com.nextgate.mm.AM -
243}}: java.lang.NoClassDefFoundError:
org.eclipse.osgi.service.urlconversion.URLConverter
java.lang.NoClassDefFoundError:
org.eclipse.osgi.service.urlconversion.URLConverter
at
org.eclipse.core.internal.runtime.Activator.getURLConverter(Activator.java:318)
at org.eclipse.core.runtime.FileLocator.toFileURL(FileLocator.java:205)
any idea how to resolve this?
also it doesn't go into the catch block (I added a brkpt there) and code
execution seems to suddenly stop after this line:
String realPath = FileLocator.toFileURL(url).getPath();
--
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RE: unable to getRealPath for servlet context
Posted by Tom Leung <to...@netage.com.hk>.
May change Karaf to use Equinox instead of Felix.
1. check config.properties under "/etc" folder, make the following change.
karaf.framework=equinox
2. then locate the Equinox version.
For example, Karaf v2.3.4 uses Equinox v3.8.0
#
# Framework selection properties
#
karaf.framework=equinox
#
# Location of the OSGi frameworks
#
karaf.framework.equinox=${karaf.default.repository}/org/eclipse/osgi/3.8.0.v
20120529-1548/osgi-3.8.0.v20120529-1548.jar
karaf.framework.felix=${karaf.default.repository}/org/apache/felix/org.apach
e.felix.framework/4.0.3/org.apache.felix.framework-4.0.3.jar
3. shutdown and restart Karaf
4. Go to http://download.eclipse.org/equinox/ and download the corresponding
Equinox SDK zip file.
Inside it, you may find the corresponding file as below:
org.eclipse.equinox.common-<version number>.jar
At the end, install this bundle in your Karaf.
Of course, you may try to find the corresponding
"org.eclipse.equinox.common" file from Maven repo.
-----Original Message-----
From: asookazian2 [mailto:asookazian@gmail.com]
Sent: Thursday, March 06, 2014 12:58 PM
To: user@karaf.apache.org
Subject: RE: unable to getRealPath for servlet context
Thx for quick response. What is the equivalent to FileLocator in karaf?
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RE: unable to getRealPath for servlet context
Posted by asookazian2 <as...@gmail.com>.
So I tried the recommended approach in this thread and getting the following
now:
karaf@root()> start 265
karaf@root()> java.lang.NullPointerException
at
org.eclipse.core.internal.runtime.Activator.getURLConverter(Activator.java:313)
at org.eclipse.core.runtime.FileLocator.toFileURL(FileLocator.java:205)
at
com.foo.bar.config.MyConfigurator.contextInitialized(MyConfigurator.java:54)
The url variable is null in the Eclipse debugger.
NPE is happening in this line: String realPath =
FileLocator.toFileURL(url).getPath();
b/c url is null...
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RE: unable to getRealPath for servlet context
Posted by asookazian2 <as...@gmail.com>.
Thx for quick response. What is the equivalent to FileLocator in karaf?
--
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RE: unable to getRealPath for servlet context
Posted by Tom Leung <to...@netage.com.hk>.
It is not a bug, "ServletContext.getRealPath("") never return a real path on
OSGI container.
For Equinox framework, use the following code fragment:
import org.eclipse.core.runtime. FileLocator;
...
ServletContext context = request.getSession().getServletContext();
URL url = context.getResource("/");
String realPath = FileLocator.toFileURL(url).getPath();
-----Original Message-----
From: asookazian2 [mailto:asookazian@gmail.com]
Sent: Thursday, March 06, 2014 8:12 AM
To: user@karaf.apache.org
Subject: unable to getRealPath for servlet context
I found the following Jetty bug report:
http://jira.codehaus.org/browse/JETTY-675
<http://jira.codehaus.org/browse/JETTY-675>
User states the following:
"ServletContext.getRealPath("") returns null instead of returning the root
dir of the webapp"
I am able to reproduce this behavior in my WAR bundle with MANIFEST.MF (WAB
(WebApplication Bundle)) deployment to Karaf 3.0.0. The version of Jetty is
the following:
karaf@root()> feature:list | grep jetty
cxf-http-jetty | 3.0.0-milestone2 | x |
cxf-3.0.0-milestone2 |
jetty | 8.1.9.v20130131 | x |
standard-3.0.0 |
pax-jetty | 8.1.14.v20131031 | x |
org.ops4j.pax.web-3.0.5 | Provide Jetty engine support
I have tried ServletContext.getRealPath("");
I have also tried ServletContext.getRealPath("/");
Both code lines return null.
Is this expected for this version of Karaf/Jetty? If yes, how can I
determine the real path.
Our scenario involves a properties file that may be installed in
karaf/config/foo directory. We don't want to load/read the file from inside
the WAR (e.g. WEB-INF) b/c the customer may need to change the file.
--
View this message in context:
http://karaf.922171.n3.nabble.com/unable-to-getRealPath-for-servlet-context-
tp4032109.html
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Re: unable to getRealPath for servlet context
Posted by Achim Nierbeck <bc...@googlemail.com>.
Hi,
as already stated this won't work for an OSGi Servlet Container.
All of the deployment together with those information are handled by Pax
Web.
Jetty is just the mere container to run the stuff.
To retrieve the actual ServletPath you will need to call request.
getServletPath()
But, this will not solve your problem. You need to be aware that since you
are running in Karaf
some things do work different here. So an access to the deployment
directory is not possible.
Since there is no such deployment directory.
So for your exact use-case one possibility would be to use an extracted war
in the deploy folder, which isn't nice
but could work.
>From an OSGi perspective I'd suggest using a fragment bundle for your
configuration file, that is why the fragment bundle have been invented for,
and attach this to your WAB.
Another possibility, use the configuration admin Service for the custom
configuration, with this solution you'll need to alter your
wab a bit though, to get a hold of the configuration.
regards, Achim
2014-03-06 1:12 GMT+01:00 asookazian2 <as...@gmail.com>:
> I found the following Jetty bug report:
> http://jira.codehaus.org/browse/JETTY-675
> <http://jira.codehaus.org/browse/JETTY-675>
>
> User states the following:
>
> "ServletContext.getRealPath("") returns null instead of returning the root
> dir of the webapp"
>
> I am able to reproduce this behavior in my WAR bundle with MANIFEST.MF (WAB
> (WebApplication Bundle)) deployment to Karaf 3.0.0. The version of Jetty
> is
> the following:
>
> karaf@root()> feature:list | grep jetty
> cxf-http-jetty | 3.0.0-milestone2 | x |
> cxf-3.0.0-milestone2 |
> jetty | 8.1.9.v20130131 | x |
> standard-3.0.0 |
> pax-jetty | 8.1.14.v20131031 | x |
> org.ops4j.pax.web-3.0.5 | Provide Jetty engine support
>
> I have tried ServletContext.getRealPath("");
>
> I have also tried ServletContext.getRealPath("/");
>
> Both code lines return null.
>
> Is this expected for this version of Karaf/Jetty? If yes, how can I
> determine the real path.
>
> Our scenario involves a properties file that may be installed in
> karaf/config/foo directory. We don't want to load/read the file from
> inside
> the WAR (e.g. WEB-INF) b/c the customer may need to change the file.
>
>
>
> --
> View this message in context:
> http://karaf.922171.n3.nabble.com/unable-to-getRealPath-for-servlet-context-tp4032109.html
> Sent from the Karaf - User mailing list archive at Nabble.com.
>
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Project Lead
blog <http://notizblog.nierbeck.de/>
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