Java Community | Help. Code. Learn.•7mo ago

spring boot resources not recognized

hi, i'm using spring boot v3.4.5 in IntelliJ ultimate with a very basic gradle buildscript [1] (no custom paths, no modules, just dependencies and a library as subproject) now, when running the project using gradle task bootRun, no resources are ever available, neither by intellij's builtin spring application run configuration a google search only results in the lie that it should load from src/main/resources path, but it simply does not i can see the resource files in build/resources and i have tried clean before bootRun as noted by someone on stackoverflow [2], but that also yielded no change whatsoever i just wish gradle would work as expected just once 😭 i do not want to build a jar, nor a war or anything like that; i would like to understand why bootRun and intellij's configuration both will not recognize my resources [1] https://github.com/burdoto/zitrusfalter/blob/main/build.gradle [2] https://stackoverflow.com/questions/25596783/resource-injection-in-spring-boot-not-working-with-gradle

17 Replies

JavaBot•7mo ago

⌛ This post has been reserved for your question.

Hey @Kaley 🦝! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically marked as dormant after 300 minutes of inactivity.

TIP: Narrow down your issue to simple and precise questions to maximize the chance that others will reply in here.

dan1st•7mo ago

How do you see these resources not being recognized? Where are they? How are you accessing them?

Kaley 🦝OP•7mo ago

getResourceAsStream("assets/background.png") always returns null

dan1st•7mo ago

Can you show the full code?

Kaley 🦝OP•7mo ago

that method is being called on Program.class.getResourceAsStream("assets/background.png")

        try (var resource = ZitrusfalterApplication.class.getResourceAsStream("assets/background.png")) {
            if (resource == null) throw new IllegalStateException("Background resource not found");
            img = ImageIO.read(resource);
        } catch (Exception e) {
            throw new Command.Error("Hintergrund kann nicht geladen werden", e);
        }

        try (var resource = ZitrusfalterApplication.class.getResourceAsStream("assets/background.png")) {
            if (resource == null) throw new IllegalStateException("Background resource not found");
            img = ImageIO.read(resource);
        } catch (Exception e) {
            throw new Command.Error("Hintergrund kann nicht geladen werden", e);
        }

dan1st•7mo ago

can you change it to getResourceAsStream("/assets/background.png")? ok yes

Kaley 🦝OP•7mo ago

are you fr telling me 😐

dan1st•7mo ago

that or ....class.getClassLoader().GetResourceAsStream("assets/background.png")

Kaley 🦝OP•7mo ago

leading slash was the fix, lmfao ffs

dan1st•7mo ago

if you are looking up resources using that method on a Class, they are resolved relative to the class

Kaley 🦝OP•7mo ago

thank you very much, the kind of stupid issue

JavaBot•7mo ago

If you are finished with your post, please close it. If you are not, please ignore this message. Note that you will not be able to send further messages here after this post have been closed but you will be able to create new posts.

dan1st•7mo ago

with the classloader or a leading slash, it uses the classpath root

Kaley 🦝OP•7mo ago

so just to make sure i got that right if the resource would lie at src/main/resources/de/kaleidox/zitrusfalter/assets/background.png that first call would have worked? presuming that the package of that class is de.kaleidox.zitrusfalter

dan1st•7mo ago

if that's the package of your main class, yes yes

Kaley 🦝OP•7mo ago

gee, alright okay i didnt know that i work too little with resources lmao thank you very much!

JavaBot•7mo ago

Post Closed

This post has been closed by <@141476933849448448>.

Gaming

Programming

spring boot resources not recognized

Did you find this page helpful?