java - How do I use @Valid to validate local variables? -

this followup question here. how add @valid local variable?

here code class authorizationserver:

@notblank private string authorizationserverid;  @property @indexed(unique = true) @notblank private string authorizationurl;  @property(policy = pojomaticpolicy.to_string) @notblank private string clientauthorizationurl;  @notblank private string devicerootcert; 

this controller:

byte[] bytes = ioutils.tobytearray(request.getinputstream());         string signature = authorization.split(":")[1];          objectmapper mapper = objectmapper();         authorizationserver authorizationserver = mapper.readvalue(bytes,          authorizationserver.class); 

how validate authorizationserver against annotations declared in authorizationserver class?

when tried

@valid authorizationserver authorizationserver = mapper.readvalue(bytes, authorizationserver.class); 

i got error @valid not applicable local variable.

i think exception says all. bean validation not allow validation local variables. validating class state via property validation or can method validation. there no such thing local variable validation.