How to extract the claims from JWT token

Question

I\'m using the dgrijalva/jwt-go/ package.

I would like to extract the payload from the token, and I couldn\'t find a way to do it.

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Example (taken from : ht

Answer 1

Sample Code:

    func extractClaims(tokenStr string) (jwt.MapClaims, bool) {
        hmacSecretString := // Value
        hmacSecret := []byte(hmacSecretString)
        token, err := jwt.Parse(tokenStr, func(token *jwt.Token) (interface{}, error) {
             // check token signing method etc
             return hmacSecret, nil
        })

        if err != nil {
            return nil, false
        }

        if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
            return claims, true
        } else {
            log.Printf("Invalid JWT Token")
            return nil, false
        }
    }