JwtUtils.java
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package com.genersoft.iot.vmp.conf.security;
import com.genersoft.iot.vmp.conf.security.dto.JwtUser;
import com.genersoft.iot.vmp.service.IUserService;
import com.genersoft.iot.vmp.storager.mapper.dto.User;
import org.jose4j.jwk.RsaJsonWebKey;
import org.jose4j.jwk.RsaJwkGenerator;
import org.jose4j.jws.AlgorithmIdentifiers;
import org.jose4j.jws.JsonWebSignature;
import org.jose4j.jwt.JwtClaims;
import org.jose4j.jwt.NumericDate;
import org.jose4j.jwt.consumer.ErrorCodes;
import org.jose4j.jwt.consumer.InvalidJwtException;
import org.jose4j.jwt.consumer.JwtConsumer;
import org.jose4j.jwt.consumer.JwtConsumerBuilder;
import org.jose4j.lang.JoseException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
@Component
public class JwtUtils implements InitializingBean {
private static final Logger logger = LoggerFactory.getLogger(JwtUtils.class);
public static final String HEADER = "access-token";
private static final String AUDIENCE = "Audience";
private static final String keyId = "3e79646c4dbc408383a9eed09f2b85ae";
public static final String token = "interior-api-eyJhbGciOiJSUzI1NiIsImtpZCI6IjNlNzk2NDZjNGRiYzQwODM4M2E5ZWVkMDlmMmI4NWFlIn0.eyJqdGkiOiJHUThFUFhtdGtJd01yVTNES3F3bnN3IiwiaWF0IjoxNzM2ODM2Mjk";
/**
* token过期时间(分钟)
*/
public static final long expirationTime = 30 * 24 * 60;
private static RsaJsonWebKey rsaJsonWebKey;
private static IUserService userService;
@Resource
public void setUserService(IUserService userService) {
JwtUtils.userService = userService;
}
@Override
public void afterPropertiesSet() {
try {
rsaJsonWebKey = generateRsaJsonWebKey();
} catch (JoseException e) {
logger.error("生成RsaJsonWebKey报错。", e);
}
}
/**
* 创建密钥对
* @throws JoseException JoseException
*/
private RsaJsonWebKey generateRsaJsonWebKey() throws JoseException {
// 生成一个RSA密钥对，该密钥对将用于JWT的签名和验证，包装在JWK中
RsaJsonWebKey rsaJsonWebKey = RsaJwkGenerator.generateJwk(2048);
// 给JWK一个密钥ID
rsaJsonWebKey.setKeyId(keyId);
return rsaJsonWebKey;
}
public static String createToken(String username) {
try {
/*
* “iss” (issuer) 发行人
* “sub” (subject) 主题
* “aud” (audience) 接收方 用户
* “exp” (expiration time) 到期时间
* “nbf” (not before) 在此之前不可用
* “iat” (issued at) jwt的签发时间
*/
JwtClaims claims = new JwtClaims();
claims.setGeneratedJwtId();
claims.setIssuedAtToNow();
// 令牌将过期的时间 分钟
claims.setExpirationTimeMinutesInTheFuture(expirationTime);
claims.setNotBeforeMinutesInThePast(0);
claims.setSubject("login");
claims.setAudience(AUDIENCE);
//添加自定义参数,必须是字符串类型
claims.setClaim("userName", username);
//jws
JsonWebSignature jws = new JsonWebSignature();
//签名算法RS256
jws.setAlgorithmHeaderValue(AlgorithmIdentifiers.RSA_USING_SHA256);
jws.setKeyIdHeaderValue(keyId);
jws.setPayload(claims.toJson());
jws.setKey(rsaJsonWebKey.getPrivateKey());
//get token
return jws.getCompactSerialization();
} catch (JoseException e) {
logger.error("[Token生成失败]： {}", e.getMessage());
}
return null;
}
public static String getHeader() {
return HEADER;
}
public static JwtUser verifyToken(String token) {
JwtUser jwtUser = new JwtUser();
try {
JwtConsumer consumer = new JwtConsumerBuilder()
.setRequireExpirationTime()
.setMaxFutureValidityInMinutes(5256000)
.setAllowedClockSkewInSeconds(30)
.setRequireSubject()
//.setExpectedIssuer("")
.setExpectedAudience(AUDIENCE)
.setVerificationKey(rsaJsonWebKey.getPublicKey())
.build();
JwtClaims claims = consumer.processToClaims(token);
NumericDate expirationTime = claims.getExpirationTime();
// 判断是否即将过期, 默认剩余时间小于5分钟未即将过期
// 剩余时间 （秒）
long timeRemaining = LocalDateTime.now().toEpochSecond(ZoneOffset.ofHours(8)) - expirationTime.getValue();
if (timeRemaining < 5 * 60) {
jwtUser.setStatus(JwtUser.TokenStatus.EXPIRING_SOON);
} else {
jwtUser.setStatus(JwtUser.TokenStatus.NORMAL);
}
String username = (String) claims.getClaimValue("userName");
User user = userService.getUserByUsername(username);
jwtUser.setUserName(username);
jwtUser.setPassword(user.getPassword());
jwtUser.setRoleId(user.getRole().getId());
jwtUser.setUserId(user.getId());
return jwtUser;
} catch (InvalidJwtException e) {
if (e.hasErrorCode(ErrorCodes.EXPIRED)) {
jwtUser.setStatus(JwtUser.TokenStatus.EXPIRED);
} else {
jwtUser.setStatus(JwtUser.TokenStatus.EXCEPTION);
}
return jwtUser;
} catch (Exception e) {
logger.error("[Token解析失败]： {}", e.getMessage());
jwtUser.setStatus(JwtUser.TokenStatus.EXPIRED);
return jwtUser;
}
}
}