JAVA之JWT工具类

最新推荐文章于 2021-12-21 23:07:03 发布

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最新推荐文章于 2021-12-21 23:07:03 发布

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分类专栏： JAVA 文章标签： JAVA JWT

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本文介绍了一个使用Auth0 JWT库创建和验证JWT令牌的实用工具类。该工具类使用HMAC256算法生成带有过期时间和发行人声明的令牌，并能从令牌中解析用户的唯一标识符。

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import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.exceptions.JWTCreationException;
import com.auth0.jwt.exceptions.JWTVerificationException;
import com.auth0.jwt.interfaces.Claim;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.sxapp.commons.exception.SXException;
import com.sxapp.commons.exception.SXExceptionEnum;
import org.joda.time.DateTime;

public class JwtUtil {
    private final static String SECRET = "324iu23094u598ndsofhsiufhaf_+0wq-42q421jiosadiusadiasd";

    public static String createToken(long uid) {
        Algorithm algorithm = Algorithm.HMAC256(SECRET);
        String token;
        try {
            token = JWT.create()
                    .withIssuer("withissuer")
                    .withExpiresAt(DateTime.now().plusHours(1).toDate())
                    .withClaim("uid", uid)
                    .sign(algorithm);
            return token;
        } catch (JWTCreationException e) {
            throw new SXException(500, e.getMessage());
        }

    }

    public static long verifyToken(String token) {
        DecodedJWT verify;
        try {
            Algorithm algorithm = Algorithm.HMAC256(SECRET);
            JWTVerifier jwtVerifier = JWT.require(algorithm)
                    .withIssuer("withissuer")
                    .build();
            verify = jwtVerifier.verify(token);
            Claim uid = verify.getClaim("uid");
            return uid.asLong();
        } catch (JWTVerificationException e) {
            throw new SXException(SXExceptionEnum.JWT_PARSE_ERROR);
        }
    }
}