Hello, I recently encountered an issue that, based on my testing, seems to be related to permissions.
In my code, I am attempting different methods to access images, but I am experiencing problems when trying to load images dynamically.
Image avatarImage = new Image();
FileStorage fileStorage = fileStorageLocator.getDefault();
String path = sysFile.substring(0, 11);
String nomeFile = sysFile.substring(12);
FileRef fileRef = new FileRef("META-INF/resources/sales/", path, nomeFile);
String nomeFileDir = path + nomeFile;
SRC_PATH = "/META-INF/resources/sales/" + path + nomeFile;
// Attempt to load image dynamically
StreamResource streamResource = new StreamResource(
nomeFile.substring(0, nomeFile.length() - 4),
() -> getClass().getResourceAsStream(SRC_PATH)
);
// Attempt to load the same image with a static path
StreamResource streamResource1 = new StreamResource(
"0c14c0ad-3b79-5519-fa5e-9a4cad49284a",
() -> getClass().getResourceAsStream("/META-INF/resources/icons/0c14c0ad-3b79-5519-fa5e-9a4cad49284a.jpg")
);
avatarImage.setSrc(streamResource);
avatarImage.setSrc(streamResource1);
return avatarImage;
Issue Description
The first StreamResource (using SRC_PATH) does not work, returning a null stream, leading to the following error:
java.lang.NullPointerException: Cannot invoke "java.io.InputStream.read(byte[])" because "source" is null.
However, the second StreamResource, which uses a static path (/META-INF/resources/icons/), works perfectly.
Additionally, I have also tried accessing the file using File Storage & FileRef, but it does not work either:
FileRef fileRef = new FileRef(fileStorage.getStorageName(), path, nomeFile);
avatarImage.setSrc(new StreamResource(
fileRef.getFileName(),
() -> fileStorageLocator.getByName(fileRef.getStorageName()).openStream(fileRef)
));
This attempt also results in an error:
[nio-8080-exec-2] io.jmix.localfs.LocalFileStorage : File C:\Users\utente\IdeaProjects\jmixprogettostudio\.jmix\work\filestorage\2024\09\26 not found
ERROR 2784 --- [nio-8080-exec-4] o.a.c.c.C.[.[.[/].[springServlet] : Servlet.service() for servlet [springServlet] threw exception
java.lang.IllegalStateException: UI instance is not available.
It means that you are calling this method out of a normal workflow where it's always implicitly set.
That may happen if you call the method from the custom thread without 'UI::access' or from test