i vomit kittens posted:

Can someone help me with converting this bit of code from Python/Flask to Java/Spring Boot? It's for a chat bot that I'm porting over because I've found Spring Boot much easier to work with w/r/t databases and more complicated JSON objects.

I'm trying to POST an image to the GroupMe server so that it can be processed by them before being sent in the chat. I've got to the point of saving the image from the given URL in a BufferedImage object, but I'm unsure of what I need to do next. Can I just put the BufferedImage object into a POST request and expect Spring to figure it out for me, or do I need to save it as a file and reopen it like the example code below does?

code:

def uploadImage(imgUrl):
    imgRequest = requests.get(imgUrl, stream=True)
    filename = "temp.png"
    if imgRequest.status_code == 200:
        with open(filename, "wb") as image:
            for chunk in imgRequest:
                image.write(chunk)
        postUrl = "https://image.groupme.com/pictures"
        files = {"file": open(filename, "rb")}
        payload = {"access_token": "----------------------"}
        r = requests.post(postUrl, files=files, params=payload)
        processedUrl = r.json()['payload']['url']
        os.remove(filename)
        return processedUrl

i vomit kittens posted:

code:

        postUrl = "https://image.groupme.com/pictures"
        files = {"file": open(filename, "rb")}
        payload = {"access_token": "----------------------"}
        r = requests.post(postUrl, files=files, params=payload)

Objective Action posted:

Java has a million excellent web client libraries but given you are already in Spring Boot land the two quickest options are probably RestTemplate and the WebFlux WebClient.

Shy posted:

Which JDK java developers use nowadays?
I see that Oracle offers an official JDK, talks something about licence change and links to OpenJDK, and then there are third party versions, so:
- is the difference meaningful to a developer?
- will your boss tell you which one to use?
- has the preference among developers/companies swung one way or the other?
- what is used by big companies and how do they deploy it?
I guess some questions may sound oblivious but I don't work with java and the op is old. Thanks.

Shy posted:

Which JDK java developers use nowadays?
I see that Oracle offers an official JDK, talks something about licence change and links to OpenJDK, and then there are third party versions, so:
- is the difference meaningful to a developer?
- will your boss tell you which one to use?
- has the preference among developers/companies swung one way or the other?
- what is used by big companies and how do they deploy it?
I guess some questions may sound oblivious but I don't work with java and the op is old. Thanks.

adaz posted:

Deployment and what is used are kind of seperate topics - are you meaning generic web services type Java code?

Shy posted:

Probably. I mean whether the same kind of choice exists wherever you deploy a hosted product to.

adaz posted:

Graal for instance is pretty heavily optimized for Scala workloads.

Sagacity posted:

I hadn't heard that before. Do you have a source for this? (Genuinely curious, don't want to sound snarky)

Soricidus posted:

Graal is good, but it seems only to be released for lts versions. Which I guess is fine for prod but makes me sad as a dev because new features are also good. At least it does java 11 now!

Also graal ce is deliberately missing optimisations so that oracle can sell the ee as being faster, because gently caress you

Graal.js is now the best embedded scripting language though.

Shy posted:

Which JDK java developers use nowadays?
I see that Oracle offers an official JDK, talks something about licence change and links to OpenJDK, and then there are third party versions, so:
- is the difference meaningful to a developer?
- will your boss tell you which one to use?
- has the preference among developers/companies swung one way or the other?
- what is used by big companies and how do they deploy it?
I guess some questions may sound oblivious but I don't work with java and the op is old. Thanks.

Sagacity posted:

How are you planning to have these components be deployed separately when changes in one of them (the DB schema) will always affect the other two?

Also since the data access patterns are going to be quite different between the ingest and the serving I don't think you should be sharing too much code there either.

Splinter posted:

True that whenever a DB migration is run the import service and webapp will both need to be updated to reflect the new schema at the same time. But outside of schema changes, I'd like to be able to make updates to the import service without taking the webapp down (and vice versa). Maybe I'm thinking about this the wrong way.

In terms of shared data access, the the import service will need to fetch from the DB in similar ways as the webapp in some cases. I'm not currently expecting to need to add CUD functionality to the webapp, but were that to happen, it seems like shared DAOs would make this easier. Maybe add a service layer between the DAO and each app that exposes different DAO functionality to each app? At the bare minimum it seems like it would be good to have the DB mapped Entity classes defined in a single location, as I expect there would be a lot of duplication there otherwise.

Splinter posted:

I'm looking for some advice on how to architect the following project. It'll have a single DB (likely postgres) used by both a webapp (primarily for displaying data) and a data ingress service (primarily for inserting/updating the DB). Ideally each of these 3 pieces would be able to be deployed separately. The plan is to use Flyway to manage the DB schema, and potentially Hibernate in the data access layer. The webapp will be Spring based, the ingress service is still up in the air. I'd like both the web app and the ingress service to share the same data access code. Would the most straightforward approach be to have the ingress service also be Spring based (Spring Batch?), so Spring can be used for DAO config/injection (this is how I'm seeing a lot of Spring+Hibernate examples done)? Would it make more sense to have Flyway bundled with the DB, or also part of the Spring app? I'm pretty new to Spring, so apologies if some of this sounds nonsensical.

Objective Action posted:

I think the problem in my mind is in trying to disambiguate what we are talking about when we talk web apps. You mention front end but then all the projects listed are geared towards service applications serving REST endpoints. To be fair I don't think that's your fault at all since searching for Java + Web anything is going to flood out the results with those these days. Of the ones listed I would say stick with Boot and only open the Spring can of worms one piece at a time when you want to add a new feature they already have into your code. Don't try to eat the whale whole.

abraham linksys posted:

Sorry for the lack of clarity of here - my project's frontend is a Vue app that consumes a REST API, so I'm looking for an HTTP API framework specifically. I don't need, e.g., server side templating.

I know some frameworks are focused more on the "internal services communicating between each other" use case instead of the "API consumed by a web app" use case, so I wanted to mention this is in the context of a web app just to filter out anything that is, say, GRPC-first.

adaz posted:

I took another look @ micronauts and you might want to check it out based on your use case. They added some support for Kotlin coroutines and all their documentation has kotlin examples too. I've personally never used it in production only playing around with it on the cloud but found it remarkbly quick and lightweight compared to like, spring.

carry on then posted:

How does it compare to something like Quarkus with just JAX-RS loaded? Don't know if the native Graal stuff is yet but I do know several of the microprofile implementations are used in production and can be minified down to just the needed libraries, but then my experience is mostly with larger Java EE based apps that tend to need the world anyway.

Love Stole the Day posted:

Spring Maven/Gradle question:

When we add a new dependency to a project, where can we see what new editable configurations are exposed to us in the project's application properties file?

For example, adding Spring Boot Data MongoDb as a dependency exposes spring.data.mongodb with a bunch of child things... but where can we see the reference for all of those things?

At the moment, my only option seems to be to just look up a tutorial example of someone else using it and then following their example.

i vomit kittens posted:

Does anyone have advice on how to get Spring Boot to properly store lists in a Postgres table?

Ither posted:

If I'm understanding correctly, there's a many to many relationship between users and events. Is there a reason why you don't want them to be in a separate table?

Sagacity posted:

You say Spring Boot but your question is about a JPA annotation. Do you mean you're using Hibernate? That doesn't seem to support Postgres arrays afaik.

DELETE CASCADE posted: