I havent tried raising the Java level yet, its still JavaSE-1.8.
Got as far as using latest versions:
JDK 21
gcloud CLI app & cloudSdkVersion 457.0.0
appengine-maven-plugin 2.5.0
To get it to run, so far:
1 I had to remove all DOCTYPE declarations in xml files in the server
project (new restrictions on DTD)
2 appengine-maven-plugin 2.5.0 requires:
<configuration>
<jvmFlags>
<item>--add-opens</item>
<item>java.base/java.util=ALL-UNNAMED</item>
This stops 500 Server Error which I've not seen before:
GCLOUD: java.lang.reflect.InaccessibleObjectException:
Unable to make field accessible: module java.base does not "opens
java.util" to unnamed module @2c95ac9e
So Craig, you say with Java17 on GAE, there isn't a web server included
anymore.
So this has to be defined somewhere in appengine-maven-plugin ?
The minimum level to avoid being shut down on GAE standard is >8
& 11 is the max for GWT, so that would seem do for now, why Java 17 ?
On Wednesday, December 20, 2023 at 4:46:03 AM UTC Craig Mitchell wrote:
> No worries not posting the POMs Tim.
>
> The bit I'm struggling with, the old Java 8 version had its own GAE
> server. So I would run that, and a GWT Code Server. Easy!
>
> *btw:* I'm talking about GAE Standard. GAE Flexible you can do whatever
> you want, but that's more work and more expensive.
>
> Now with the upgrade to Java17 on GAE, there isn't a web server included
> anymore. It's up to you to supply one. I would assume when you deploy it,
> it doesn't actually use your server, but what setup is GAE expecting for
> the deploy?
>
> I see there is a SpringBoot GAE example, so it might be easier to use
> that, and get GWT to work with SpringBoot. Not sure. Very interested to
> hear what you're doing.
>
> Thanks!
>
> On Wednesday 20 December 2023 at 1:51:55 pm UTC+11 [email protected]
> wrote:
>
>> For some years I've been deploying GWT 2.8.2 to GAE with Maven & Google
>> Cloud Tools.
>> I now find GAE is not supporting Java 8 after January, so currently
>> upgrading (rather slowly).
>> There are 4 long POM files, probably better to mail them then post a
>> distilled version here ?
>>
>> On Sunday, December 17, 2023 at 5:20:56 AM UTC Craig Mitchell wrote:
>>
>>> Hi,
>>>
>>> The instructions here
>>> https://www.gwtproject.org/doc/latest/tutorial/appengine.html are no
>>> longer valid, as the Google Plugin for Eclipse is now dead (Google no
>>> longer supports Java 1.8, and the Google Plugin for Eclipse doesn't support
>>> any Eclipse versions that support anything after Java 1.8). Ref:
>>> https://github.com/GoogleCloudPlatform/google-cloud-eclipse/issues/3710
>>>
>>> The new approach with GAE is to use Maven or Gradle with Google Cloud
>>> Tools.
>>>
>>> I've been struggling to work out how this is supposed to happen. It
>>> looks like we now have to provide our own Web Server for GAE, but can we
>>> use the Jetty server that GWT uses for development? I assume the deploy
>>> build would not include the Jetty web server?
>>>
>>> If anyone has deployed a GWT app to GAE with Maven and the new Google
>>> Cloud Tools, it would be great if you could give high level instructions on
>>> how it's all supposed to fit together.
>>>
>>> An example Maven POM file with both the Google Cloud Tools, and GWT
>>> would be even better. 🙂
>>>
>>> Thanks!
>>>
>>
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