package com.genersoft.iot.vmp.conf.security; 
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import com.genersoft.iot.vmp.conf.security.dto.JwtUser; 
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import org.jose4j.json.JsonUtil; 
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import org.jose4j.jwk.RsaJsonWebKey; 
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import org.jose4j.jws.AlgorithmIdentifiers; 
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import org.jose4j.jws.JsonWebSignature; 
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import org.jose4j.jwt.JwtClaims; 
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import org.jose4j.jwt.NumericDate; 
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import org.jose4j.jwt.consumer.ErrorCodes; 
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import org.jose4j.jwt.consumer.InvalidJwtException; 
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import org.jose4j.jwt.consumer.JwtConsumer; 
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import org.jose4j.jwt.consumer.JwtConsumerBuilder; 
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import org.jose4j.lang.JoseException; 
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import org.slf4j.Logger; 
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import org.slf4j.LoggerFactory; 
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import java.security.PrivateKey; 
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import java.time.LocalDateTime; 
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import java.time.ZoneOffset; 
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public class JwtUtils { 
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    private static final Logger logger = LoggerFactory.getLogger(JwtUtils.class); 
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    private static final String HEADER = "access-token"; 
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    private static final String AUDIENCE = "Audience"; 
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    private static final long EXPIRED_THRESHOLD = 10 * 60; 
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    private static final String keyId = "3e79646c4dbc408383a9eed09f2b85ae"; 
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    private static final String privateKeyStr = "{\"kty\":\"RSA\",\"kid\":\"3e79646c4dbc408383a9eed09f2b85ae\",\"alg\":\"RS256\",\"n\":\"gndmVdiOTSJ5et2HIeTM5f1m61x5ojLUi5HDfvr-jRrESQ5kbKuySGHVwR4QhwinpY1wQqBnwc80tx7cb_6SSqsTOoGln6T_l3k2Pb54ClVnGWiW_u1kmX78V2TZOsVmZmwtdZCMi-2zWIyAdIEXE-gncIehoAgEoq2VAhaCURbJWro_EwzzQwNmCTkDodLAx4npXRd_qSu0Ayp0txym9OFovBXBULRvk4DPiy3i_bPUmCDxzC46pTtFOe9p82uybTehZfULZtXXqRm85FL9n5zkrsTllPNAyEGhgb0RK9sE5nK1m_wNNysDyfLC4EFf1VXTrKm14XNVjc2vqLb7Mw\",\"e\":\"AQAB\",\"d\":\"ed7U_k3rJ4yTk70JtRSIfjKGiEb67BO1TabcymnljKO7RU8nage84zZYuSu_XpQsHk6P1f0Gzxkicghm_Er-FrfVn2pp70Xu52z3yRd6BJUgWLDFk97ngScIyw5OiULKU9SrZk2frDpftNCSUcIgb50F8m0QAnBa_CdPsQKbuuhLv8V8tBAV7F_lAwvSBgu56wRo3hPz5dWH8YeXM7XBfQ9viFMNEKd21sP_j5C7ueUnXT66nBxe3ZJEU3iuMYM6D6dB_KW2GfZC6WmTgvGhhxJD0h7aYmfjkD99MDleB7SkpbvoODOqiQ5Epb7Nyh6kv5u4KUv2CJYtATLZkUeMkQ\",\"p\":\"uBUjWPWtlGksmOqsqCNWksfqJvMcnP_8TDYN7e4-WnHL4N-9HjRuPDnp6kHvCIEi9SEfxm7gNxlRcWegvNQr3IZCz7TnCTexXc5NOklB9OavWFla6u-s3Thn6Tz45-EUjpJr0VJMxhO-KxGmuTwUXBBp4vN6K2qV6rQNFmgkWzk\",\"q\":\"tW_i7cCec56bHkhITL_79dXHz_PLC_f7xlynmlZJGU_d6mqOKmLBNBbTMLnYW8uAFiFzWxDeDHh1o5uF0mSQR-Z1Fg35OftnpbWpy0Cbc2la5WgXQjOwtG1eLYIY2BD3-wQ1VYDBCvowr4FDi-sngxwLqvwmrJ0xjhi99O-Gzcs\",\"dp\":\"q1d5jE85Hz_6M-eTh_lEluEf0NtPEc-vvhw-QO4V-cecNpbrCBdTWBmr4dE3NdpFeJc5ZVFEv-SACyei1MBEh0ItI_pFZi4BmMfy2ELh8ptaMMkTOESYyVy8U7veDq9RnBcr5i1Nqr0rsBkA77-9T6gzdvycBZdzLYAkAmwzEvk\",\"dq\":\"q29A2K08Crs-jmp2Bi8Q_8QzvIX6wSBbwZ4ir24AO-5_HNP56IrPS0yV2GCB0pqCOGb6_Hz_koDvhtuYoqdqvMVAtMoXR3YJBUaVXPt65p4RyNmFwIPe31zHs_BNUTsXVRMw4c16mci03-Af1sEm4HdLfxAp6sfM3xr5wcnhcek\",\"qi\":\"rHPgVTyHUHuYzcxfouyBfb1XAY8nshwn0ddo81o1BccD4Z7zo5It6SefDHjxCAbcmbiCcXBSooLcY-NF5FMv3fg19UE21VyLQltHcVjRRp2tRs4OHcM8yaXIU2x6N6Z6BP2tOksHb9MOBY1wAQzFOAKg_G4Sxev6-_6ud6RISuc\"}"; 
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    private static final String publicKeyStr = "{\"kty\":\"RSA\",\"kid\":\"3e79646c4dbc408383a9eed09f2b85ae\",\"alg\":\"RS256\",\"n\":\"gndmVdiOTSJ5et2HIeTM5f1m61x5ojLUi5HDfvr-jRrESQ5kbKuySGHVwR4QhwinpY1wQqBnwc80tx7cb_6SSqsTOoGln6T_l3k2Pb54ClVnGWiW_u1kmX78V2TZOsVmZmwtdZCMi-2zWIyAdIEXE-gncIehoAgEoq2VAhaCURbJWro_EwzzQwNmCTkDodLAx4npXRd_qSu0Ayp0txym9OFovBXBULRvk4DPiy3i_bPUmCDxzC46pTtFOe9p82uybTehZfULZtXXqRm85FL9n5zkrsTllPNAyEGhgb0RK9sE5nK1m_wNNysDyfLC4EFf1VXTrKm14XNVjc2vqLb7Mw\",\"e\":\"AQAB\"}"; 
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    /** 
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     * token过期时间(分钟) 
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     */ 
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    public static final long expirationTime = 30; 
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    public static String createToken(String username, String password, Integer roleId) { 
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        try { 
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            /** 
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             * “iss” (issuer)  发行人 
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             * 
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             * “sub” (subject)  主题 
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             * 
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             * “aud” (audience) 接收方 用户 
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             * 
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             * “exp” (expiration time) 到期时间 
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             * 
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             * “nbf” (not before)  在此之前不可用 
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             * 
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             * “iat” (issued at)  jwt的签发时间 
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             */ 
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            //Payload 
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            JwtClaims claims = new JwtClaims(); 
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            claims.setGeneratedJwtId(); 
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            claims.setIssuedAtToNow(); 
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            // 令牌将过期的时间 分钟 
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            claims.setExpirationTimeMinutesInTheFuture(expirationTime); 
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            claims.setNotBeforeMinutesInThePast(0); 
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            claims.setSubject("login"); 
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            claims.setAudience(AUDIENCE); 
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            //添加自定义参数,必须是字符串类型 
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            claims.setClaim("username", username); 
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            claims.setClaim("password", password); 
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            claims.setClaim("roleId", roleId); 
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            //jws 
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            JsonWebSignature jws = new JsonWebSignature(); 
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            //签名算法RS256 
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            jws.setAlgorithmHeaderValue(AlgorithmIdentifiers.RSA_USING_SHA256); 
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            jws.setKeyIdHeaderValue(keyId); 
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            jws.setPayload(claims.toJson()); 
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            PrivateKey privateKey = new RsaJsonWebKey(JsonUtil.parseJson(privateKeyStr)).getPrivateKey(); 
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            jws.setKey(privateKey); 
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            //get token 
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            String idToken = jws.getCompactSerialization(); 
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            return idToken; 
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        } catch (JoseException e) { 
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            logger.error("[Token生成失败]: {}", e.getMessage()); 
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        } 
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        return null; 
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    } 
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    public static String getHeader() { 
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        return HEADER; 
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    } 
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    public static JwtUser verifyToken(String token) { 
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        JwtUser jwtUser = new JwtUser(); 
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        try { 
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            JwtConsumer consumer = new JwtConsumerBuilder() 
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                    .setRequireExpirationTime() 
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                    .setMaxFutureValidityInMinutes(5256000) 
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                    .setAllowedClockSkewInSeconds(30) 
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                    .setRequireSubject() 
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                    //.setExpectedIssuer("") 
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                    .setExpectedAudience(AUDIENCE) 
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                    .setVerificationKey(new RsaJsonWebKey(JsonUtil.parseJson(publicKeyStr)).getPublicKey()) 
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                    .build(); 
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            JwtClaims claims = consumer.processToClaims(token); 
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            NumericDate expirationTime = claims.getExpirationTime(); 
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            // 判断是否即将过期, 默认剩余时间小于5分钟未即将过期 
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            // 剩余时间 (秒) 
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            long timeRemaining = LocalDateTime.now().toEpochSecond(ZoneOffset.ofHours(8)) - expirationTime.getValue(); 
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            if (timeRemaining < 5 * 60) { 
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                jwtUser.setStatus(JwtUser.TokenStatus.EXPIRING_SOON); 
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            }else { 
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                jwtUser.setStatus(JwtUser.TokenStatus.NORMAL); 
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            } 
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            String username = (String) claims.getClaimValue("username"); 
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            String password = (String) claims.getClaimValue("password"); 
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            Long roleId = (Long) claims.getClaimValue("roleId"); 
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            jwtUser.setUserName(username); 
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            jwtUser.setPassword(password); 
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            jwtUser.setRoleId(roleId.intValue()); 
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            return jwtUser; 
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        } catch (InvalidJwtException e) { 
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            if (e.hasErrorCode(ErrorCodes.EXPIRED)) { 
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                jwtUser.setStatus(JwtUser.TokenStatus.EXPIRED); 
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            }else { 
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                jwtUser.setStatus(JwtUser.TokenStatus.EXCEPTION); 
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            } 
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            return jwtUser; 
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        }catch (Exception e) { 
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            logger.error("[Token解析失败]: {}", e.getMessage()); 
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            jwtUser.setStatus(JwtUser.TokenStatus.EXPIRED); 
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            return jwtUser; 
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        } 
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    } 
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} 
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