jwt加密权限验证

向右看齐 2023-10-12 09:12 46阅读 0赞

1.pom文件

<dependency>
        <groupId>com.nimbusds</groupId>
        <artifactId>nimbus-jose-jwt</artifactId>
        <version>6.0</version>
    </dependency>

2.在工具类中设置密钥和有效时间

//密钥
    private static final byte[] SECRET = "9373bd00ffab49f4a8ee24aac0ec716b".getBytes();
    
    //有效时间
    private static final long EXPIRE_TIME = 1000 * 60 * 30;//有效时长（单位毫秒）

3.生成token

/**
     * 生成Token
     * @param subject 主题
     * @param claimKey 应用Key
     * @param claimValue 应用Value
     * @return String
     */
    public static String buildJWT(String subject, String claimKey, String claimValue) {
        try {
            MACSigner macSigner = new MACSigner(SECRET);
            JWTClaimsSet claimsSet = new JWTClaimsSet.Builder()
                    .subject(subject)
                    .expirationTime(new Date(System.currentTimeMillis() + EXPIRE_TIME))
                    .claim(claimKey, claimValue)
                    .build();
            SignedJWT signedJWT = new SignedJWT(new JWSHeader(JWSAlgorithm.HS256), claimsSet);
            signedJWT.sign(macSigner);
            return signedJWT.serialize();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

4.检验token

/**
     * 校验token
     * @param token Token
     * @return boolean
     */
    public static boolean vaildToken(String token ) {
        try {
            SignedJWT jwt = SignedJWT.parse(token);
            JWSVerifier verifier = new MACVerifier(SECRET);
            //校验是否有效
            if (!jwt.verify(verifier)) {
                return false;
            }
            //校验超时
            Date expirationTime = jwt.getJWTClaimsSet().getExpirationTime();
            return !new Date().after(expirationTime);
        } catch (Exception e) {
            return false;
        }
    }

5.解析token获取value

/**
     * 获取token应用Value
     * @param token Token
     * @param claimKey 应用Value
     * @return String
     */
    public static String getTokenClaimValue(String token, String claimKey ) {
        try {
            if (!vaildToken(token)) {
                return null;
            }
            SignedJWT jwt = SignedJWT.parse(token);
            return (String) jwt.getJWTClaimsSet().getClaim(claimKey);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }