jjwt: Can't use setHeader(Header) because ambigous method call

Header is both a Header and a Map so this won’t work:

Header header = new DefaultHeader();

String payloadWithoutPartner1 = Jwts.builder()
         .setClaims(claims)
         .signWith(SignatureAlgorithm.HS256, key)
         .setHeader(header)
         .compact();

Ambiguous method call. Both setHeader (Header) in JwtBuilder and setHeader(Map<String, Object>) in JwtBuilder match

About this issue

Original URL
State: closed
Created 8 years ago
Reactions: 11
Comments: 21 (6 by maintainers)

Most upvoted comments

@lhazlewood using Jwts.header() doesn’t change anything. Standard technique or not compiler won’t know which overload version to use, cause both are applicable. This is the simplest thing you can paste and check for yourself:

@Test
    public void whatever() {
        Header header = Jwts.header();

        String payloadWithoutPartner1 = Jwts.builder()
                .setHeader(header)
                .compact();
    }

kleewho on Oct 3, 2016

Casting to map .setHeader((Map<String, Object>) header) works

Like the last entry stated, I used setHeaderParam, instead.

robrez on Apr 10, 2017

I would consider using these type-safe methods a very good thing. Otherwise - why is there even a class JwsHeader?

mindhaq on Nov 29, 2018