fixed
It's now just the old servlet thing of needing servlet jar to compile (but
not run) the code. In the ant build file I just added a
*<pathelement location* to point to the jar in tomcat/lib and everything is
fine. No magic byte enhancing needed.
Seems odd I never had to do this in version 2.10 in pre-jakarta days.
Probably I shoud have rtfm :-)
Thanks for the pointers from thse who contributed to this thread.
On Friday, 6 December 2024 at 15:57:26 UTC dav...@googlemail.com wrote:
> hi Colin
>
> import com.google.gwt.user.server.rpc.jakarta.RemoteServiceServlet;
> //import com.google.gwt.user.server.rpc.RemoteServiceServlet;
>
> As above, I replaced the import statement as you suggest. Also I
> referenced gwt-servlet-jakarta.jar instead of gwt-servlet.jar in my ant
> build file; gwt-servlet-deps.jar is also referenced and both do get copied
> to the WEB-INF/libs.
>
> But now I get a compile error:
> [javac] class file for jakarta.servlet.http.HttpServlet not found
> [javac] /home/david/projects/gwt-2.12.1/
> dmatthews.org/src/org/dmatthews/server/RemoteIPServiceImpl.java:7: error:
> cannot access ServletException
> [javac] public class RemoteIPServiceImpl extends RemoteServiceServlet
> implements RemoteIPService{
>
> Other than that everything is as in the working 2.10 version. Incidently I
> get a 404 with that version also *if* the server class file hasn't been
> byte enhanced, so it's not a good indication that the servlet isn't
> referenced correctly.
>
> On the development machine javac is v21, but since I've got source="1.8"
> target="1.8" nowarn="true" in the javac section of the build file, that's
> neither here nor there?
> On Tuesday, 3 December 2024 at 15:29:28 UTC Colin Alworth wrote:
>
>> If you are using jakarta.servlet, you shouldn't need to do any bytecode
>> fixing, provided you are depending on gwt-servlet-jakarta.jar and have
>> changed your servlet implementation to extend from
>> com.google.gwt.user.server.rpc.*jakarta*.RemoteServiceServlet.
>>
>> If you aren't getting any error except 404, that suggests to me that the
>> servlet isn't configured to be loaded at all - can you confirm that it is
>> listed in the web.xml? If instead you are using annotations for discovery,
>> confirm it is jakarta.servlet.annotation.WebServlet rather than javax, and
>> consider adding some logging to verify that your servlet is having its
>> constructor and init(config) method called at all. If not, something is
>> probably misconfigured in how you are signaling to your servlet container
>> how it should find and load the required servlets.
>>
>> On Tuesday, December 3, 2024 at 6:04:49 AM UTC-6 dav...@googlemail.com
>> wrote:
>>
>>> Thanks Shaik & Jens for your replies, but I've still got the same
>>> problem. To recap the project includes a servlet (yes it is gwt-rpc) that
>>> simply grabs the remote IP and makes it available to client code. If I
>>> browse to the servlet, I should get a 405 signifying that the servlet is
>>> running but GET is not supported; but I still get a 404.
>>>
>>> Prompted by your replies, I saw I had neglected to update the ant build
>>> file with gwt-servlet-jakarta.jar instead of gwt-servlet.jar, but nothing
>>> else you suggested seems to apply. The web.xml and <project>.gwt.xml files
>>> are unchanged and nothing else on the production server (apache, tomcat)
>>> has changed.
>>>
>>> I again tried replacing the server class with a byte enhanced version as
>>> I need to do with 2.10.0, but although it does add a few bytes, still I
>>> get the 404. Nothing in either apache or tomcat logs apart from the 404s
>>> and 405s
>>>
>>> On Monday, 2 December 2024 at 14:41:12 UTC SHAIK FAYAZ wrote:
>>>
>>>> Almost path problem it would be or check the path names correctly
>>>>
>>>> On Sun, Dec 1, 2024, 7:05 AM SHAIK FAYAZ <sfay...@gmail.com> wrote:
>>>>
>>>>> 1. Check How the Servlet is Set Up
>>>>> Look at the file where your servlet is connected to a URL, like
>>>>> web.xml or in your annotations (comments in the code). Make sure the URL
>>>>> path for your servlet is correct, so it gets triggered when you visit the
>>>>> right link.
>>>>> 2. Ensure You Updated All Java Imports
>>>>> When you updated from version 2.10.0 to 2.12.1, you need to check if
>>>>> your code is using the updated jakarta.* package instead of javax.*. Some
>>>>> of the old names have changed, so make sure everything is up to date.
>>>>> 3. Make Sure Your Tomcat Version Works with the New Code
>>>>> If you're using an older version of Tomcat (like version 9 or below),
>>>>> it may not work with the updated jakarta.* code. Make sure you’re using
>>>>> Tomcat version 10 or higher, which supports this newer format.
>>>>> 4. Check if Your Servlet Supports GET or POST Methods
>>>>> Earlier, you got a "405" error, which means the servlet was not set up
>>>>> to handle certain requests like GET. You need to make sure that your
>>>>> servlet is set up to handle the right type of requests.
>>>>> 5. Check Apache Proxy Settings
>>>>> If you're using Apache to forward requests to Tomcat, make sure Apache
>>>>> is set up correctly so that it passes the requests properly. A wrong
>>>>> setting could cause the "404" error you're seeing now.
>>>>> 6. Look at Logs for Clues
>>>>> Check both the Tomcat and Apache logs. They might give you more
>>>>> details about what’s going wrong and help identify the issue.
>>>>> 7. Issues with Code Enhancers
>>>>> If you’re using tools that automatically modify your code (like
>>>>> Hibernate or other libraries), check to make sure they're compatible with
>>>>> the new version (2.12.1). These tools sometimes cause problems when you
>>>>> upgrade versions.
>>>>>
>>>>> On Sun, Dec 1, 2024, 5:31 AM Jens <jens.ne...@gmail.com> wrote:
>>>>>
>>>>>> GWT doesn't really have any servlet magic so I doubt that the GWT
>>>>>> upgrade has caused the issue. Are you double sure you haven't changed
>>>>>> anything else except the GWT library? No Tomcat update? No Apache
>>>>>> update?
>>>>>> No update of Apache proxy rules?
>>>>>>
>>>>>> It sounds like your servlet is a GWT-RPC service because you used the
>>>>>> Jakarta migration tool. If that is true you can now use
>>>>>> gwt-servlet-jakarta.jar and skip the migration tool.
>>>>>>
>>>>>> -- J.
>>>>>>
>>>>>> dav...@googlemail.com schrieb am Samstag, 30. November 2024 um
>>>>>> 17:27:59 UTC+1:
>>>>>>
>>>>>>> hi
>>>>>>> I'm trying to upgrade from 2.10.0 to 2.12.1.
>>>>>>>
>>>>>>> My app runs in tomcat / java 21 with apache using it as a proxy.
>>>>>>> It's mostly client code except for a servlet whose sole function is to
>>>>>>> grab
>>>>>>> the remote ip and make it available to client code. With the 2.10.0
>>>>>>> setup I
>>>>>>> had to run the server class through the jakartaee migration tool to
>>>>>>> make it
>>>>>>> work. With everything ok, if you browse to the servlet you get a 405 as
>>>>>>> the
>>>>>>> GET method is not supported, although that confirms the servlet is
>>>>>>> running.
>>>>>>>
>>>>>>> With unchanged code everything compiles with 2.12.1, but the
>>>>>>> servlet will not run. I've tried both the standard compiled class and
>>>>>>> its
>>>>>>> byte enhanced version. Both give a 404 and the ip is not available to
>>>>>>> client code. The client code itself otherwise runs as expected.
>>>>>>>
>>>>>>> Any pointers towards a fix?
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>> You received this message because you are subscribed to the Google
>>>>>> Groups "GWT Users" group.
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>>>>>> send an email to google-web-tool...@googlegroups.com.
>>>>>> To view this discussion visit
>>>>>> https://groups.google.com/d/msgid/google-web-toolkit/dda2b7e2-3565-4f79-ac99-b90f8cac9522n%40googlegroups.com
>>>>>>
>>>>>> <https://groups.google.com/d/msgid/google-web-toolkit/dda2b7e2-3565-4f79-ac99-b90f8cac9522n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>> .
>>>>>>
>>>>>
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