Updating a table to contain an image - spring-boot

Question

I have successfully created an entity and can post to it. I wish to be able to update a column of the table with a blob file. When I do the post request I get a success response however the row is not updated
This is the entity
#Data
#NoArgsConstructor
#AllArgsConstructor
#Entity
#Service
public class Category {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private long categoryId;
#NotNull
#Column(unique=true)
#Size(min = 5, max = 20)
private String categoryName;
#Column(columnDefinition = "MEDIUMBLOB")
private byte[] categoryImage;
#NotNull
#Size(min = 10, max = 50)
private String categoryDescription;
}
The PUT request for the image upload
#PutMapping("/categories/{categoryId}/upload")
public ResponseEntity<ResponseMessage> uploadImage(#PathVariable("categoryId") long catID,
#RequestParam() MultipartFile file) {
Optional<Category> category = catService.listCategoryById(catID);
if (category.isPresent()) {
try {
Category _category = category.get();
_category.setCategoryImage(imgService.storeImage(file));
return new ResponseEntity<>(
new ResponseMessage("Uploaded " + file.getOriginalFilename() + " successfully!"),
HttpStatus.CREATED);
} catch (Exception e) {
return new ResponseEntity<>(new ResponseMessage("Failed to upload " + file.getOriginalFilename() + "!"),
HttpStatus.EXPECTATION_FAILED);
}
} else {
return new ResponseEntity<>(new ResponseMessage("Category Does not exist"), HttpStatus.NOT_FOUND);
}
}
The image service
#Service
public class ImageService {
public byte[] storeImage(MultipartFile file) throws IOException {
return file.getBytes();
}
}
When I do the PUT request I get this
However the database is not updated. The image column remains null
Do you have an idea why?

Answer 1

I don't see service.save() call in your controller code. Are you persisting that _category entity?
try {
Category _category = category.get();
_category.setCategoryImage(imgService.storeImage(file));
categoryService.save(_category);
return new ResponseEntity<>(
new ResponseMessage("Uploaded " + file.getOriginalFilename() + " successfully!"),
HttpStatus.CREATED);
} catch (Exception e) {
return new ResponseEntity<>(new ResponseMessage("Failed to upload " + file.getOriginalFilename() + "!"),
HttpStatus.EXPECTATION_FAILED);
}