public class TokenUtils { private Logger logger = LoggerFactory.getLogger(this.getClass()); /** * 签名秘钥 */ public static final String SECRET = "token"; /** * 生成token * @param id 一般传入userName * @return */ public static String createJwtToken(String id){ String issuer = ""; String subject = ""; long ttlMillis = 30*60*1000; return createJwtToken(id, issuer, subject, ttlMillis); } /** * 生成Token * * @param id * 编号 * @param issuer * 该JWT的签发者,是否使用是可选的 * @param subject * 该JWT所面向的用户,是否使用是可选的; * @param ttlMillis * 签发时间 * @return token String */ public static String createJwtToken(String id, String issuer, String subject, long ttlMillis) { // 签名算法 ,将对token进行签名 SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256; // 生成签发时间 long nowMillis = System.currentTimeMillis(); Date now = new Date(nowMillis); // 通过秘钥签名JWT byte[] apiKeySecretBytes = DatatypeConverter.parseBase64Binary(SECRET); Key signingKey = new SecretKeySpec(apiKeySecretBytes, signatureAlgorithm.getJcaName()); // Let‘s set the JWT Claims JwtBuilder builder = Jwts.builder().setId(id) .setIssuedAt(now) .setSubject(subject) .setIssuer(issuer) .signWith(signatureAlgorithm, signingKey); // if it has been specified, let‘s add the expiration if (ttlMillis >= 0) { long expMillis = nowMillis + ttlMillis; Date exp = new Date(expMillis); builder.setExpiration(exp); } // Builds the JWT and serializes it to a compact, URL-safe string return builder.compact(); } // Sample method to validate and read the JWT public static Claims parseJWT(String jwt) { // This line will throw an exception if it is not a signed JWS (as expected) Claims claims = Jwts.parser() .setSigningKey(DatatypeConverter.parseBase64Binary(SECRET)) .parseClaimsJws(jwt).getBody(); return claims; } public static void main(String[] args) { System.out.println(TokenUtils.createJwtToken("admin")); System.out.println(TokenUtils.parseJWT("eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiJhZG1pbiIsImlhdCI6MTUxNzg4NDU0OCwic3ViIjoiIiwiaXNzIjoiIiwiZXhwIjoxNTE3ODg2MzQ4fQ.AxGGAOiwOmnp5oKaSdlmny-zgZigsqgZY8fG_UxVLKs")); } }
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