JWT工具类

小咪咪 2022-12-21 03:22 147阅读 0赞

public class JwtUtils { 
    
        public static final String APP_SECRET = "ukc8BDbRigUDaY6pZFfWus2jZWLPHA";
    
        private static Key getKeyInstance(){ 
            SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
            byte[] bytes = DatatypeConverter.parseBase64Binary(APP_SECRET);
            return new SecretKeySpec(bytes,signatureAlgorithm.getJcaName());
        }
    
        public static String getJwtToken(JwtInfo jwtInfo, int expire){ 
    
            String JwtToken = Jwts.builder()
                    .setHeaderParam("typ", "JWT")
                    .setHeaderParam("alg", "HS256")
                    .setSubject("guli-user")//主题
                    .setIssuedAt(new Date())//颁发时间
                    .setExpiration(DateTime.now().plusSeconds(expire).toDate())//过期时间
                    .claim("id", jwtInfo.getId())//用户id
                    .claim("nickname", jwtInfo.getNickname())//用户昵称
                    .claim("avatar", jwtInfo.getAvatar())//用户头像
                    .signWith(SignatureAlgorithm.HS256, getKeyInstance())
                    .compact();
    
            return JwtToken;
        }
    
        /** * 判断token是否存在与有效 * @param jwtToken * @return */
        public static boolean checkJwtTToken(String jwtToken) { 
            if(StringUtils.isEmpty(jwtToken)) return false;
            try { 
                Jwts.parser().setSigningKey(getKeyInstance()).parseClaimsJws(jwtToken);
            } catch (Exception e) { 
                e.printStackTrace();
                return false;
            }
            return true;
        }
    
        /** * 判断token是否存在与有效 * @param request * @return */
        public static boolean checkJwtTToken(HttpServletRequest request) { 
            try { 
                String jwtToken = request.getHeader("token");
                if(StringUtils.isEmpty(jwtToken)) return false;
                Jwts.parser().setSigningKey(getKeyInstance()).parseClaimsJws(jwtToken);
            } catch (Exception e) { 
                e.printStackTrace();
                return false;
            }
            return true;
        }
    
        /** * 根据token获取会员id * @param request * @return */
        public static JwtInfo getMemberIdByJwtToken(HttpServletRequest request) { 
            String jwtToken = request.getHeader("token");
            if(StringUtils.isEmpty(jwtToken)) return null;
            Jws<Claims> claimsJws = Jwts.parser().setSigningKey(getKeyInstance()).parseClaimsJws(jwtToken);
            Claims claims = claimsJws.getBody();
            JwtInfo jwtInfo = new JwtInfo(claims.get("id").toString(), claims.get("nickname").toString(), claims.get("avatar").toString());
            return jwtInfo;
        }
    }