| 提交 | 用户 | age | ||
| 826b66 | 1 | package com.hx.util; |
| C | 2 | |
| 3 | import java.util.Base64; | |
| 4 | import java.util.Date; | |
| 5 | ||
| 6 | import javax.crypto.SecretKey; | |
| 7 | import javax.crypto.spec.SecretKeySpec; | |
| 8 | ||
| 9 | import io.jsonwebtoken.Claims; | |
| 10 | import io.jsonwebtoken.ExpiredJwtException; | |
| 11 | import io.jsonwebtoken.JwtBuilder; | |
| 12 | import io.jsonwebtoken.Jwts; | |
| 13 | import io.jsonwebtoken.SignatureAlgorithm; | |
| 14 | import io.jsonwebtoken.SignatureException; | |
| 15 | ||
| 16 | /** | |
| 17 | * 生成token （登录，或者其他） | |
| 18 | * @author chenjiahe | |
| 19 | * @Data 20200609 | |
| 20 | */ | |
| 21 | public class JwtTool { | |
| 22 | ||
| 23 | /** | |
| 24 | * 签发JWT | |
| 25 | * @param id 标识 | |
| 26 | * @param subject 可以是JSON数据 尽可能少 | |
| 27 | * @param ttlMillis 有效时间长度(秒)，为空你认证时间 | |
| 28 | * @return String | |
| 29 | * | |
| 30 | */ | |
| 31 | public static String createJWT(String id, String subject, long ttlMillis) { | |
| 32 | SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256; | |
| 33 | long nowMillis = System.currentTimeMillis(); | |
| 34 | Date now = new Date(nowMillis); | |
| 35 | SecretKey secretKey = generalKey(); | |
| 36 | JwtBuilder builder = Jwts.builder() | |
| 37 | .setId(id) | |
| 38 | .setSubject(subject) // 主题 | |
| 39 | .setIssuer("user") // 签发者 | |
| 40 | .setIssuedAt(now) // 签发时间 | |
| 41 | .signWith(signatureAlgorithm, secretKey); // 签名算法以及密匙 | |
| 42 | if (SimpleTool.checkNotNull(ttlMillis)&&ttlMillis >= 0) { | |
| 43 | long expMillis = nowMillis + ttlMillis*1000; | |
| 44 | Date expDate = new Date(expMillis); | |
| 45 | builder.setExpiration(expDate); // 过期时间 | |
| 46 | } | |
| 47 | return builder.compact(); | |
| 48 | } | |
| 49 | /** | |
| 50 | * 验证JWT | |
| 51 | * @param jwtStr | |
| 52 | * @return JwtConstant | |
| 53 | */ | |
| 54 | public static JwtConstant validateJWT(String jwtStr) { | |
| 55 | JwtConstant checkResult = new JwtConstant(); | |
| 56 | Claims claims = null; | |
| 57 | try { | |
| 58 | claims = parseJWT(jwtStr); | |
| 59 | checkResult.setSuccess(true); | |
| 60 | checkResult.setClaims(claims); | |
| 61 | } catch (ExpiredJwtException e) { | |
| 62 | checkResult.setErrCode(JwtConstant.JWT_ERRCODE_EXPIRE); | |
| 63 | checkResult.setSuccess(false); | |
| 64 | } catch (SignatureException e) { | |
| 65 | checkResult.setErrCode(JwtConstant.JWT_ERRCODE_FAIL); | |
| 66 | checkResult.setSuccess(false); | |
| 67 | } catch (Exception e) { | |
| 68 | checkResult.setErrCode(JwtConstant.JWT_ERRCODE_FAIL); | |
| 69 | checkResult.setSuccess(false); | |
| 70 | } | |
| 71 | return checkResult; | |
| 72 | } | |
| 73 | ||
| 74 | public static SecretKey generalKey() { | |
| 75 | byte[] encodedKey = Base64.getDecoder().decode(JwtConstant.JWT_SECERT); | |
| 76 | SecretKey key = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES"); | |
| 77 | return key; | |
| 78 | } | |
| 79 | ||
| 80 | /** | |
| 81 | * | |
| 82 | * 解析JWT字符串 | |
| 83 | * @param jwt | |
| 84 | * @return | |
| 85 | * @throws Exception | |
| 86 | */ | |
| 87 | public static Claims parseJWT(String jwt) throws Exception { | |
| 88 | SecretKey secretKey = generalKey(); | |
| 89 | return Jwts.parser() | |
| 90 | .setSigningKey(secretKey) | |
| 91 | .parseClaimsJws(jwt) | |
| 92 | .getBody(); | |
| 93 | } | |
| 94 | } | |
