无法通过 Spring 从 Redis 获取正确的值

Question

I'm stuck on this for quite some time. For token management, I'm using Redis. On the Redis, each token keeps a list of all the invoices my customers can see.

For my example, my customer X can view the invoice Y. But the information Y doesn't make it once it goes through Java.

For instance, on redis, the command

hget TokenDocumentsEntity:[UUID key] metadata.documents.source.elementData[0]

give me back Y. This is what I want and need. Overall, every information I can see using

hgetall

are correct. This means my code properly writes what I want. But when I try to get the info from the redis (using @Repository and findById) It gives me back :

tokenDocuments(owner=Id_of_the_customer, documents={name_of_source=[49]})

I have no clue where is this 49 coming from, what it is related to or what it represents. But that's the place where my Y should be.

Any clue why this happen?

EDIT : here is the code where this happens: on the controller :

    @PostMapping("/base64")
    public ResponseEntity<byte[]> getDocument(@Valid @RequestBody FileRequest fileRequest, @RequestHeader HttpHeaders header) {

        TokenClaims tokenClaims = validateHeaderAndGetTokenClaims(header);
        TokenDocuments tokenDocuments = newTokenService.getTokenDocuments(tokenClaims.getTokenDocumentsId());

        Audit auditDao = iAuditService.getBackBone(Bill, "listBills", Customer, String.valueOf(tokenClaims.getSubject()));
.
.
.

And on the NewTokenService Implementation :

    @Override
    public TokenDocuments getTokenDocuments(UUID uuid) {
        Optional<TokenDocumentsEntity> optional = tokenDocumentsRepository.findById(uuid);

        if (optional.isPresent()) {
            logger.debug("optional : " + optional);
            return optional.get().getMetadata();
        }

        throw new EntityNotFoundException("entity with uuid " + uuid + " not found on token db");
    }

the debugging tool shows me that

uuid = 18906e40-9156-457e-9069-9e849ec663e2

which is a key found on my redis, thus fine. but also

optional = Optional[TokenDocumentsEntity(id=18906e40-9156-457e-9069-9e849ec663e2, metadata=TokenDocuments(owner=1041403, documents={SWS=[49]}))]

All I send is a FileRequest fileRequest of the form :

{
    "fileId": 101520529,
    "fileExtension": "PDF",
    "fileName": "2019-FLN-1000003001",
    "fileSource": "SWS"
}

Thank you!

Answer 1

I found the problem.

In my

tokenDocuments

the variable documents was a HashMap which are not supported by Redis. I fixed this by using converters instead.

Thank you to anyone who tried to help.