package org.knowm.xchange.upbit.service;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.fasterxml.jackson.databind.ObjectMapper;
import si.mazi.rescu.ParamsDigest;
import si.mazi.rescu.RestInvocation;

import javax.ws.rs.QueryParam;
import java.io.IOException;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;

public class UpbitJWTDigest implements ParamsDigest {
    private String accessKey;
    private String secretKey;

    private UpbitJWTDigest(String accessKey, String secretKey) throws IllegalArgumentException {
        this.accessKey = accessKey;
        this.secretKey = secretKey;
    }

    public static UpbitJWTDigest createInstance(String accessKey, String secretKey) {
        return new UpbitJWTDigest(accessKey, secretKey);
    }

    @Override
    public String digestParams(RestInvocation restInvocation) {
        String queryString = "";
        if (restInvocation.getParamsMap().get(QueryParam.class) != null
                && !restInvocation.getParamsMap().get(QueryParam.class).isEmpty()) {
            queryString = String.valueOf(restInvocation.getParamsMap().get(QueryParam.class));
        } else if (restInvocation.getRequestBody() != null
                && !restInvocation.getRequestBody().isEmpty()) {
            try {
                ObjectMapper mapper = new ObjectMapper();
                Map<String, String> map = mapper.readValue(restInvocation.getRequestBody(), Map.class);
                Iterator it = map.keySet().iterator();
                while (it.hasNext()) {
                    String key = (String) it.next();
                    String value = map.get(key);
                    queryString += "&" + key + "=" + value;
                }
                queryString = queryString.substring(1);
            } catch (IOException e) {
                throw new IllegalStateException(e.getMessage());
            }
        }
        Algorithm algorithm = Algorithm.HMAC256(secretKey);
        JWTCreator.Builder builder = JWT.create();
        builder.withClaim("access_key", accessKey).withClaim("nonce", String.valueOf(new Date().getTime()));
        if (queryString.length() > 0) builder.withClaim("query", queryString);
        String jwtToken = builder.sign(algorithm);
        return "Bearer " + jwtToken;
    }
}

package org.knowm.xchange.upbit.service;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.fasterxml.jackson.databind.ObjectMapper;
import si.mazi.rescu.ParamsDigest;
import si.mazi.rescu.RestInvocation;

import javax.ws.rs.QueryParam;
import java.io.IOException;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;

public class UpbitJWTDigest implements ParamsDigest {
    private String accessKey;
    private String secretKey;

    private UpbitJWTDigest(String accessKey, String secretKey) throws IllegalArgumentException {
        this.accessKey = accessKey;
        this.secretKey = secretKey;
    }

    public static UpbitJWTDigest createInstance(String accessKey, String secretKey) {
        return new UpbitJWTDigest(accessKey, secretKey);
    }

    @Override
    public String digestParams(RestInvocation restInvocation) {
        String queryString = "";
        if (restInvocation.getParamsMap().get(QueryParam.class) != null
                && !restInvocation.getParamsMap().get(QueryParam.class).isEmpty()) {
            queryString = String.valueOf(restInvocation.getParamsMap().get(QueryParam.class));
        } else if (restInvocation.getRequestBody() != null
                && !restInvocation.getRequestBody().isEmpty()) {
            try {
                ObjectMapper mapper = new ObjectMapper();
                Map<String, String> map = mapper.readValue(restInvocation.getRequestBody(), Map.class);
                Iterator it = map.keySet().iterator();
                while (it.hasNext()) {
                    String key = (String) it.next();
                    String value = map.get(key);
                    queryString += "&" + key + "=" + value;
                }
                queryString = queryString.substring(1);
            } catch (IOException e) {
                throw new IllegalStateException(e);
            }
        }
        Algorithm algorithm = Algorithm.HMAC256(secretKey);
        JWTCreator.Builder builder = JWT.create();
        builder.withClaim("access_key", accessKey).withClaim("nonce", String.valueOf(new Date().getTime()));
        if (queryString.length() > 0) builder.withClaim("query", queryString);
        String jwtToken = builder.sign(algorithm);
        return "Bearer " + jwtToken;
    }
}

throw prameter change