Contract addrees 에 따른 balance 획득

카테고리 없음 2020. 3. 5. 17:14

import java.math.BigDecimal;
import java.math.BigInteger;
import java.sql.Date;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;

/*web3j import*/

import org.web3j.protocol.Web3j;
import org.web3j.protocol.core.DefaultBlockParameterName;
import org.web3j.protocol.core.methods.response.EthGetBalance;
import org.web3j.utils.Convert;
import org.web3j.utils.Convert.Unit;

public String getBalanceToken(String addr) throws Exception
{
List lst = new ArrayList();
String url = "https://api.etherscan.io/api?module=account&action=balance&"
+ "apikey=이더스캔페이지에서 등록한 API KEY";
url += "&address=" + addr;
url += "&contractaddress=컨트렉트 ADDRESS";
Communicator comm = new Communicator();
String strJson = comm.getHttpJsonFromURL(url);
JSONObject jsonObj = new JSONObject(strJson);
String status = jsonObj.getString("status");
String rtnVal = "0.0";
if (status.equals("1"))
{
BigDecimal temp = new BigDecimal(jsonObj.getString("result"));

String formatString = "##,###,###,###,###,##0.0000000000000000";
Convert.Unit unit = Convert.Unit.ETHER;

String tempA = temp.toString();
BigDecimal tempB = Convert.fromWei(tempA, unit);

rtnVal = new DecimalFormat(formatString).format(tempB);
}

return rtnVal;
}