jwt简单小demo

蔚落 2023-06-12 08:58 35阅读 0赞

jwt生成token并校验

package cn.nachuan.springboottest1;
    
    import com.auth0.jwt.JWT;
    import com.auth0.jwt.JWTVerifier;
    import com.auth0.jwt.algorithms.Algorithm;
    import com.auth0.jwt.exceptions.JWTVerificationException;
    import com.auth0.jwt.interfaces.Claim;
    import com.auth0.jwt.interfaces.DecodedJWT;
    
    import java.io.UnsupportedEncodingException;
    import java.security.Security;
    import java.util.Calendar;
    import java.util.Date;
    import java.util.HashMap;
    import java.util.Map;
    
    /**
     * jwt
     *
     * @author nachuan
     * @create 2019-11-11 16:11
     */
    public class JwtTest {
        public static String SECRET = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoi57qz5bedIiwiaWQiOiIxMjNhYmMiLCJleHAiOjE1NzM0NjE2NjIsImlhdCI6MTU3MzQ2MTYwMn0.L6oYBBDSXAkLVC9nmaBLTMESXMg4XgKQqTby0BNpt9s";
    
        /**
         * 生成token
         * @return
         * @throws UnsupportedEncodingException
         */
        public static String createToken() throws UnsupportedEncodingException {
            Date date = new Date();
            Calendar nowTime = Calendar.getInstance();
            nowTime.add(Calendar.MINUTE,1);
            Date expireDate = nowTime.getTime();
            HashMap<String, Object> map = new HashMap<>();
            map.put("alg","HS256");
            map.put("typ","JWT");
            return JWT.create()
                    .withHeader(map)
                    .withClaim("name", "纳川")
                    .withClaim("id", "123abc")
                    .withExpiresAt(expireDate)
                    .withIssuedAt(date)
                    .sign(Algorithm.HMAC256(SECRET));
    
    
        }
    
        /**
         * 校验并获取数据
         * @param token
         * @return
         * @throws UnsupportedEncodingException
         */
        public static Map<String, Claim> verifyToken(String token) throws UnsupportedEncodingException {
            JWTVerifier build = JWT.require(Algorithm.HMAC256(SECRET)).build();
            DecodedJWT jwt = null;
            try {
                jwt = build.verify(token);
            } catch (JWTVerificationException e) {
                throw  new RuntimeException("登录凭证已经过期");
            }
            return jwt.getClaims();
    
        }
    
        public static void main(String[] args) throws UnsupportedEncodingException {
            String token = createToken();
            System.out.println(token);
    
            String  s = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoi57qz5bedIiwiaWQiOiIxMjNhYmMiLCJleHAiOjE1NzM0NjI3MjAsImlhdCI6MTU3MzQ2MjY2MH0.U_JzpU0fSJV4uq04dATRBFs_CW4qj1nLSuQxP3EkHuo";
            String  s1= "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoi57qz5bedIiwiaWQiOiIxMjNhYmMiLCJleHAiOjE1NzM0NjI4MTksImlhdCI6MTU3MzQ2Mjc1OX0.YYnNWYRnzweJ2ehVojuzZXGD6CUJbpNsH0yjhMPhXFc";
            Map<String, Claim> map = verifyToken(s1);
            String name = map.get("name").asString();
    
            String id = map.get("id").asString();
            System.out.println(name +"\t" +  id
            );
        }
    }