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Re: [jetty-users] Migration help to Jersey 3 / Jetty 11
Some observations on your example project.

Use the jetty-bom

            <dependency>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-bom</artifactId>
                <version>11.0.8</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

Use the enforcer plugin to check for duplicate classes, and important step before you use the shade plugin (you had quite a few before your last change).

Your shade plugin should be updated to version 3.2.4 (the 3.2.0 version is problematic with jpms and multirelease-jars)
Setup the filters/filter/excludes properly on your shade plugin.

You can see these changes at ...

https://github.com/joakime/ModernREST/blob/joakim-cleanup/pom.xml

Joakim Erdfelt / joakim@xxxxxxxxxxx


On Tue, Feb 8, 2022 at 11:51 AM <chris@xxxxxxxxxxxxxxxx> wrote:
Thank you both for your suggestions. I've now got a working JakartaEE /
Jersey 3 / Jetty 11 webapp with sessions, static resources, and all
configuration by code:

https://github.com/chriswhocodes/ModernREST/blob/main/src/main/java/com/chrisnewland/modernrest/webapp/WebServer.java
https://github.com/chriswhocodes/ModernREST/blob/main/pom.xml

Kind regards,

Chris



On 2022-02-08 14:42, chris@xxxxxxxxxxxxxxxx wrote:
> SSCCE: https://github.com/chriswhocodes/ModernREST
>
> On trying to access the HttpServletRequest injected by:
>
>       @Context private HttpServletRequest servletRequest;
>
> I get an NPE:
>
>       HttpSession session = servletRequest.getSession(true);
>
> I'm trying to create a modern JakartaEE / Jersey 3 / Jetty 11 webapp
> with all configuration in code, no XML wiring, like I did here:
>
> https://github.com/chriswhocodes/JaCoLine/blob/master/src/main/java/com/chrisnewland/jacoline/web/WebServer.java
> https://github.com/chriswhocodes/JaCoLine/blob/master/pom.xml
>
> Thanks,
>
> Chris
>
> 2022-02-08T14:11:19.574897Z ERR
> com.chrisnewland.modernrest.webapp.filter.RequestFilter Could not
> filter request
> java.lang.NullPointerException
>       at
> com.chrisnewland.modernrest.webapp.filter.RequestFilter.filter(RequestFilter.java:24)
>       at
> org.glassfish.jersey.server.ContainerFilteringStage.apply(ContainerFilteringStage.java:108)
>       at
> org.glassfish.jersey.server.ContainerFilteringStage.apply(ContainerFilteringStage.java:44)
>       at
> org.glassfish.jersey.process.internal.Stages.process(Stages.java:173)
>       at
> org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:247)
>       at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
>       at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
>       at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
>       at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
>       at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
>       at
> org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
>       at
> org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234)
>       at
> org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:684)
>       at
> org.glassfish.jersey.jetty.JettyHttpContainer.handle(JettyHttpContainer.java:175)
>       at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
>       at org.eclipse.jetty.server.Server.handle(Server.java:567)
>       at
> org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:404)
>       at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:661)
>       at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:396)
>       at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:289)
>       at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:324)
>       at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
>       at
> org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:106)
>       at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:790)
>       at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:912)
>       at java.base/java.lang.Thread.run(Thread.java:829)
>
>
> On 2022-02-08 12:03, chris@xxxxxxxxxxxxxxxx wrote:
>> Thank you both, I'm working on an SSCCE to reproduce the null injected
>> request. Once I've got that on GitHub I'll try and update my pom from
>> your project until it works.
>>
>> Kind regards,
>>
>> Chris
>>
>> On 2022-02-08 11:16, hantsy bai wrote:
>>> I have created a starter template project to start Jakarta EE 9
>>> servlet web application, but I used an external Jetty to serve the
>>> application in this project,
>>>
>>> see: 
>>> https://github.com/hantsy/jakartaee9-servlet-starter-boilerplate
>>>
>>> Hantsy Bai
>>>
>>> Self-employed consultant, fullstack developer, agile coach
>>>
>>> GitHub: https://github.com/hantsy
>>>
>>> Twitter: https://twitter.com/@hantsyMedium:
>>> https://medium.com/@hantsy
>>>
>>> On Tue, Feb 8, 2022 at 12:13 PM Jan Bartel <janb@xxxxxxxxxxx> wrote:
>>>
>>>> It would be useful if you could provide either a pointer to your
>>>> project or a minimum reproducible example. The exact stacktrace you
>>>> get would also be useful.
>>>>
>>>> Jan
>>>>
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