fix

wzy

2022-08-27 a0a74747c9e486b700cf866250fbb64cbc73bc14

 src/main/java/cc/mrbird/febs/dapp/chain/EthService.java

@@ -4,6 +4,7 @@
import cn.hutool.core.util.StrUtil;
import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.bouncycastle.jcajce.provider.digest.SHA3;
import org.web3j.abi.FunctionEncoder;
import org.web3j.abi.FunctionReturnDecoder;
@@ -35,6 +36,7 @@
 * @author wzy
 * @date 2022-04-15
 **/
@Slf4j
public class EthService implements ContractChainService {

    private Web3j web3j;
@@ -360,4 +362,102 @@
        }
        return BigInteger.ZERO;
    }

    @Override
    public BigInteger totalSupplyNFT() {
        try {
            String methodName = "totalSupply";
            List<Type> inputParameters = new ArrayList<>();
            List<TypeReference<?>> outputParameters = new ArrayList<>();
            TypeReference<Uint256> typeReference = new TypeReference<Uint256>() {
            };
            outputParameters.add(typeReference);
            Function function = new Function(methodName, inputParameters, outputParameters);
            String data = FunctionEncoder.encode(function);
            Transaction transaction = Transaction.createEthCallTransaction(null, contractAddress, data);

            EthCall ethCall;
            BigInteger totalSupply = BigInteger.ZERO;
            try {
                ethCall = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST).send();
                List<Type> results = FunctionReturnDecoder.decode(ethCall.getValue(), function.getOutputParameters());
                totalSupply = (BigInteger) results.get(0).getValue();
                return totalSupply;
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return BigInteger.ZERO;
    }

    @Override
    public String safeMintNFT(String toAddress) {
        String gas = getGas();

        try {
            Credentials credentials = Credentials.create(privateKey);
            EthGetTransactionCount ethGetTransactionCount = web3j
                    .ethGetTransactionCount(ownerAddress, DefaultBlockParameterName.LATEST).sendAsync().get();
            BigInteger nonce = ethGetTransactionCount.getTransactionCount();
            Function function = new Function("safeMint",
                    Arrays.asList(new Address(toAddress)),
                    Arrays.asList(new TypeReference<Type>() {
                    }));

            String encodedFunction = FunctionEncoder.encode(function);
            RawTransaction rawTransaction = RawTransaction.createTransaction(nonce,
                    Convert.toWei(gas, Convert.Unit.GWEI).toBigInteger(),
                    Convert.toWei("500000", Convert.Unit.WEI).toBigInteger(), contractAddress, encodedFunction);

            byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials);
            String hexValue = Numeric.toHexString(signedMessage);

            CompletableFuture<EthSendTransaction> ethSendTransactionCompletableFuture = web3j.ethSendRawTransaction(hexValue).sendAsync();
            EthSendTransaction ethSendTransaction = ethSendTransactionCompletableFuture.get();
            if (ethSendTransaction.hasError()) {
                log.info("card:{}", JSONObject.toJSONString(ethSendTransaction));
                return "";
            } else {
                return ethSendTransaction.getTransactionHash();
            }
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    }

    @Override
    public String ownerOfNft(Integer index) {
        try {
            String methodName = "ownerOf";
            List<Type> inputParameters = new ArrayList<>();
            List<TypeReference<?>> outputParameters = new ArrayList<>();
            Uint256 uint256 = new Uint256(index);
            inputParameters.add(uint256);
            TypeReference<Address> typeReference = new TypeReference<Address>() {
            };
            outputParameters.add(typeReference);
            Function function = new Function(methodName, inputParameters, outputParameters);
            String data = FunctionEncoder.encode(function);
            Transaction transaction = Transaction.createEthCallTransaction(null, contractAddress, data);

            EthCall ethCall;
            String address = "";
            try {
                ethCall = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST).send();
                List<Type> results = FunctionReturnDecoder.decode(ethCall.getValue(), function.getOutputParameters());
                address = (String) results.get(0).getValue();
            } catch (IOException e) {
                e.printStackTrace();
            }

            return address;

        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }
}