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JWT Token bases Authentication and Authorization

Pragya Keshap answered on February 28, 2023 Popularity 1/10 Helpfulness 1/10

answer JWT Token bases Authentication and Authorization

JWT Token bases Authentication and Authorization

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We have implemented JWT Token bases Authentication and Authorization.

@Service
public class JWTUtil {

    @Value("${jjwt.secret}")
    private String secret;

    @Value("${token.expiration.in.hour}")
    private int expirationTimeInHour;

    private Key key;

    public static final String KEY_ROLE = "role";

    @PostConstruct
    public void init(){
        this.key = Keys.hmacShaKeyFor(secret.getBytes());
    }

    public Mono<Claims> getAllClaimsFromToken(String token) {
        return Mono.just(Jwts.parserBuilder().setSigningKey(key).build().parseClaimsJws(token).getBody());
    }

    public String generateToken(UserDetails userDetails) {
        String authority = userDetails.getAuthorities().stream().map(GrantedAuthority::getAuthority).collect(toSingleton());
        Map<String, String> claims = new HashMap<>();
        claims.put(KEY_ROLE, authority);

        return Jwts.builder()
                .setClaims(claims)
                .setSubject(userDetails.getUsername())
                .setExpiration(Date.from(Instant.now().plus(Duration.ofHours(expirationTimeInHour))))
                .setIssuedAt(Date.from(Instant.now()))
                .signWith(key)
                .compact();
    }

    public Mono<Boolean> validateToken(String token) {
        return getAllClaimsFromToken(token).map(Claims::getExpiration)
                .map(expiration -> expiration.after(new Date()));
    }
}

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: authentication authorization java jwt token

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Contributed on Feb 28 2023

Pragya Keshap

0 Answers Avg Quality 2/10

JWT Token bases Authentication and Authorization

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