Update value for an existing Claim

[mparthasarathi]

I am trying to upgrade to latest version(0.13.0) and stuck at a point. Our code base has got functionality where it is trying to update an existing Claim(as per the current flow). But with the latest version, I am getting UnsupportedOperationException as the Claims is immutable?
How to achieve this without re-creating the Claims object from the scratch?

Claims existingClaims = getExistingClaims()
String existingClaimName = "some_name";
boolean claimValue = true;
existingClaims.put(existingClaimName, claimValue ); // with latest version exception thrown

[lhazlewood]

Hi there!

Claims are indeed immutable, so if you need to modify an instance for continued re-use later, you'll need to create a new instance based on the previous one. Example:

Claims newClaims = Jwts.claims().add(existingClaims).add(existingClaimName, claimValue).build();

but if you only need to override a few claims for a single JWT, and you don't need a newClaims instance for continued use, you can do it inline when creating the JWT instead:

Jwts.builder().claims(existingClaims).claim(existingClaimName, claimValue)... // etc...

[mparthasarathi]

Thank you for the swift response, the above suggestions sorted my issue.