[英]JWT Token is always received as expired while parsing
I am using JWT Authentictaion in one of my application along with Spring Boot/Security and its my first take on JWT. 我在一个应用程序中使用JWT Authentictaion以及Spring Boot / Security及其对JWT的第一次学习。
Following are my set and get authentication methods: 以下是我的设置和获取身份验证方法:
static void addAuthentication(HttpServletResponse res, JWTPayload payload) {
// all authentication related data like authorities and permissions can be
// embed to the token in a map using setClaims()
Map<String, Object> claims = new HashMap<String, Object>();
claims.put("roles", payload.getRoles());
claims.put("permissions", payload.getPermissions());
String JWT = Jwts.builder()
.setSubject(payload.getUsername())
.setClaims(claims)
.setExpiration(new Date(System.currentTimeMillis() + EXPIRATIONTIME))
.signWith(SignatureAlgorithm.HS512, SECRET_KEY)
.compact();
res.addHeader(HEADER_STRING, TOKEN_PREFIX + " " + JWT);
}
/**
* this method retrives the token from the header and validates it.
* this method is called from the JWTAuthentication filter which is
* used against all the incoming calls except the login.
* @param request
* @return
*/
static Authentication getAuthentication(HttpServletRequest request) {
String token = request.getHeader(HEADER_STRING);
if (token != null) {
// parse the token.
String user = Jwts.parser()
.setSigningKey(SECRET_KEY)
.parseClaimsJws(token.replace(TOKEN_PREFIX, ""))
.getBody()
.getSubject();
return user != null ?
new UsernamePasswordAuthenticationToken(user, null, emptyList()) :
null;
}
return null;
}
The JWT is generated and received in headers just fine. 生成JWT并在标头中接收它就好了。 However, if used in subsequent API call, I receive following error.
但是,如果在后续的API调用中使用,则会收到以下错误。
io.jsonwebtoken.ExpiredJwtException: JWT expired at 2018-10-31T16:06:05Z. Current time: 2018-10-31T16:06:08Z, a difference of 3421 milliseconds. Allowed clock skew: 0 milliseconds.
The exception says allowed clock skew is 0 milliseconds. 例外情况是允许的时钟偏移为0毫秒。 In my above code
EXPIRATIONTIME
is set to 30000 (I believe this is set in seconds). 在我上面的代码中,
EXPIRATIONTIME
设置为30000(我相信这是以秒为单位设置的)。 I have tried increasing this value too but I still get the error. 我也尝试增加此值,但仍然收到错误。
Please suggest what am I doing wrong ? 请指出我做错了什么?
Not sure if you have already got an answer, but someone might benefit from this some time. 不知道您是否已经找到答案,但是有些人可能会从中受益。 I had the same problem initially and I thought it was an issue with JWT.
最初我有同样的问题,我认为这是JWT的问题。 But, when I debugged my code, got to know that I was doing a silly mistake and the expiration date was set in the past.
但是,当我调试代码时,才知道我犯了一个愚蠢的错误,并且到期日期已确定为过去。
So, for testing this I have created a sample program that you can execute standalone. 因此,为了进行测试,我创建了一个示例程序,您可以独立执行该程序。 Check this and modify your code accordingly.
对此进行检查并相应地修改您的代码。 Hope this helps.
希望这可以帮助。
import java.security.Key;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.UUID;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jws;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
public class TestJWTToken {
private static final String API_KEY = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
public static void main(String... args) {
String jwt = createJWT();
System.out.println("JWT: " + jwt);
parseJWT(jwt);
}
private static String createJWT() {
Calendar cal = Calendar.getInstance(Locale.UK);
Calendar cal1 = Calendar.getInstance(Locale.UK);
cal1.setTime(cal.getTime());
cal1.add(Calendar.SECOND, 300);
byte[] apiKeySecretBytes = DatatypeConverter.parseBase64Binary(API_KEY);
Key signingKey = new SecretKeySpec(apiKeySecretBytes, SignatureAlgorithm.HS256.getJcaName());
Map<String, Object> map = new HashMap<>();
map.put("alg", "HS256");
map.put("typ", "JWT");
String someId = UUID.randomUUID().toString();
return Jwts.builder().setHeader(map).setIssuer("service_provider").setSubject("consumer_provider_connectivity_token")
.claim("some_id", someId).setIssuedAt(cal.getTime()).setExpiration(cal1.getTime())
.signWith(SignatureAlgorithm.HS256, signingKey).compact();
}
private static void parseJWT(String jwt) {
Jws<Claims> jwsClaims = Jwts.parser().setSigningKey(DatatypeConverter.parseBase64Binary(API_KEY)).parseClaimsJws(jwt);
System.out.println("JWT decoded: " + jwsClaims);
Claims claims = jwsClaims.getBody();
System.out.println("Subject: " + claims.getSubject());
System.out.println("Issuer: " + claims.getIssuer());
System.out.println("Issued at: " + claims.getIssuedAt());
System.out.println("Expiration: " + claims.getExpiration());
System.out.println("Some_Id: " + claims.get("some_id"));
}
}
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