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| | | import io.jsonwebtoken.Claims; |
| | | import io.jsonwebtoken.JwtBuilder; |
| | | import io.jsonwebtoken.Jwts; |
| | | import io.jsonwebtoken.SignatureAlgorithm; |
| | | import lombok.Data; |
| | | |
| | | import javax.crypto.SecretKey; |
| | | import javax.crypto.spec.SecretKeySpec; |
| | | import java.util.Base64; |
| | | import java.util.Date; |
| | | import java.util.UUID; |
| | | |
| | | /** |
| | | * @Author : zhoush |
| | | * @Date: 2024/4/9 19:15 |
| | | * @Description: |
| | | */ |
| | | @Data |
| | | public class JwtUtil { |
| | | |
| | | //有效期为 |
| | | public static final Long JWT_TTL = 60 * 60 * 1000L;// 60 * 60 *1000 一个小时 |
| | | //设置秘钥明文 |
| | | public static final String JWT_KEY = "sangeng"; |
| | | private static final long expire = 60 * 60 * 1000L; |
| | | private static final String secret = "beibo"; |
| | | private static final String header = "Authorization"; |
| | | |
| | | public static String getUUID() { |
| | | String token = UUID.randomUUID().toString().replaceAll("-", ""); |
| | | return token; |
| | | } |
| | | // 生成jwt |
| | | public static String generateToken(String username) { |
| | | |
| | | /** |
| | | * 生成jtw |
| | | * |
| | | * @param subject token中要存放的数据(json格式) |
| | | * @return |
| | | */ |
| | | public static String createJWT(String subject) { |
| | | JwtBuilder builder = getJwtBuilder(subject, null, getUUID());// 设置过期时间 |
| | | return builder.compact(); |
| | | } |
| | | Date nowDate = new Date(); |
| | | Date expireDate = new Date(nowDate.getTime() + 1000 * expire); |
| | | |
| | | /** |
| | | * 生成jtw |
| | | * |
| | | * @param subject token中要存放的数据(json格式) |
| | | * @param ttlMillis token超时时间 |
| | | * @return |
| | | */ |
| | | public static String createJWT(String subject, Long ttlMillis) { |
| | | JwtBuilder builder = getJwtBuilder(subject, ttlMillis, getUUID());// 设置过期时间 |
| | | return builder.compact(); |
| | | } |
| | | |
| | | private static JwtBuilder getJwtBuilder(String subject, Long ttlMillis, String uuid) { |
| | | SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256; |
| | | SecretKey secretKey = generalKey(); |
| | | long nowMillis = System.currentTimeMillis(); |
| | | Date now = new Date(nowMillis); |
| | | if (ttlMillis == null) { |
| | | ttlMillis = JwtUtil.JWT_TTL; |
| | | } |
| | | long expMillis = nowMillis + ttlMillis; |
| | | Date expDate = new Date(expMillis); |
| | | return Jwts.builder() |
| | | .setId(uuid) //唯一的ID |
| | | .setSubject(subject) // 主题 可以是JSON数据 |
| | | .setIssuer("sg") // 签发者 |
| | | .setIssuedAt(now) // 签发时间 |
| | | .signWith(signatureAlgorithm, secretKey) //使用HS256对称加密算法签名, 第二个参数为秘钥 |
| | | .setExpiration(expDate); |
| | | .setHeaderParam("typ", "JWT") |
| | | .setSubject(username) |
| | | .setIssuedAt(nowDate) |
| | | .setExpiration(expireDate)// 7天過期 |
| | | .signWith(SignatureAlgorithm.HS512, secret) |
| | | .compact(); |
| | | } |
| | | |
| | | /** |
| | | * 创建token |
| | | * |
| | | * @param id |
| | | * @param subject |
| | | * @param ttlMillis |
| | | * @return |
| | | */ |
| | | public static String createJWT(String id, String subject, Long ttlMillis) { |
| | | JwtBuilder builder = getJwtBuilder(subject, ttlMillis, id);// 设置过期时间 |
| | | return builder.compact(); |
| | | } |
| | | |
| | | public static void main(String[] args) throws Exception { |
| | | String token = "eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiJjYWM2ZDVhZi1mNjVlLTQ0MDAtYjcxMi0zYWEwOGIyOTIwYjQiLCJzdWIiOiJzZyIsImlzcyI6InNnIiwiaWF0IjoxNjM4MTA2NzEyLCJleHAiOjE2MzgxMTAzMTJ9.JVsSbkP94wuczb4QryQbAke3ysBDIL5ou8fWsbt_ebg"; |
| | | Claims claims = parseJWT(token); |
| | | System.out.println(claims); |
| | | } |
| | | |
| | | /** |
| | | * 生成加密后的秘钥 secretKey |
| | | * |
| | | * @return |
| | | */ |
| | | public static SecretKey generalKey() { |
| | | byte[] encodedKey = Base64.getDecoder().decode(JwtUtil.JWT_KEY); |
| | | SecretKey key = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES"); |
| | | return key; |
| | | } |
| | | |
| | | /** |
| | | * 解析 |
| | | * |
| | | * @param jwt |
| | | * @return |
| | | * @throws Exception |
| | | */ |
| | | public static Claims parseJWT(String jwt) throws Exception { |
| | | SecretKey secretKey = generalKey(); |
| | | // 解析jwt |
| | | public static Claims getClaimByToken(String jwt) { |
| | | try { |
| | | return Jwts.parser() |
| | | .setSigningKey(secretKey) |
| | | .setSigningKey(secret) |
| | | .parseClaimsJws(jwt) |
| | | .getBody(); |
| | | } catch (Exception e) { |
| | | return null; |
| | | } |
| | | } |
| | | |
| | | // jwt是否过期 |
| | | public boolean isTokenExpired(Claims claims) { |
| | | return claims.getExpiration().before(new Date()); |
| | | } |
| | | |
| | | } |