Is there a way to add custom field to payload ?

Hi all .

I want to add a custom field(UserType) to my jwt payload. look like that , how can i do that ?

String compactJws = Jwts.builder()
                                 .setId(uid)
                                 .setCustomField("userType",userType)
                                 .setExpiration(getExp())
                                 .signWith(SignatureAlgorithm.HS512,key)
                                 .compact();

[pkalwar]

@bakulinav You can have a custom class like:

public static final class MyJwtToken extends DefaultClaims {
	private static final String USER_ID = "userId";
	// ... your other fields
	public MyJwtToken() {
		super();
	}
	private MyJwtToken(Claims claim) {
		super(claim);
	}
	public String getUserid() {
		return (String) get(USER_ID);
	}
	public void setUserid(String userId) {
		super.setValue(USER_ID, userId);
	}
	//.... other custom getters/setters
}

and use this class like:

MyJwtToken myToken = new MyJwtToken(Jwts.parser().setSigningKey(tokenSigningKey).parseClaimsJws(tokenStr).getBody());

now you can call:

myToken.getUserid();

[lhazlewood]

I’d really recommend not subclassing the Claims implementation - you’re tightly coupling your implementation to JJWT’s. Instead, it’s better to use composition over inheritance. In other words, save your custom data as a claim, e.g. .claim("foo", myData). Once you acquire your custom data, you can convert it or inspect it however you wish.