package com.xcong.excoin.modules.blackchain.service;
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import java.io.File;
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import java.io.IOException;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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import java.math.RoundingMode;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.ExecutionException;
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import org.apache.commons.lang3.StringUtils;
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import org.web3j.abi.FunctionEncoder;
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import org.web3j.abi.FunctionReturnDecoder;
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import org.web3j.abi.TypeReference;
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import org.web3j.abi.datatypes.Address;
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import org.web3j.abi.datatypes.Function;
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import org.web3j.abi.datatypes.Type;
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import org.web3j.abi.datatypes.generated.Uint256;
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import org.web3j.crypto.Credentials;
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import org.web3j.crypto.RawTransaction;
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import org.web3j.crypto.TransactionEncoder;
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import org.web3j.crypto.WalletUtils;
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import org.web3j.protocol.Web3j;
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import org.web3j.protocol.admin.Admin;
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import org.web3j.protocol.core.DefaultBlockParameterName;
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import org.web3j.protocol.core.Request;
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import org.web3j.protocol.core.methods.request.Transaction;
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import org.web3j.protocol.core.methods.response.*;
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import org.web3j.protocol.http.HttpService;
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import org.web3j.utils.Convert;
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import org.web3j.utils.Numeric;
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import org.web3j.utils.Convert.Unit;
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/**
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* ETH类，使用Web3j 下面为使用教程
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* https://kauri.io/article/925d923e12c543da9a0a3e617be963b4/manage-an-ethereum-account-with-java-and-web3js
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*
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* @author Administrator
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*
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*/
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public class EthService {
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private static String ethWalletPath = "/home/javaweb/webresource/eth";
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// private static String ethWalletPath="E://";
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private Web3j web3j;
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// private Admin admin;
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// private Parity parity;
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/**
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* 服务器地址
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*/
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//private static final String ETH_UTL = "https://mainnet.infura.io/v3/882c66ebcfc141abbea22b948fa44321";
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private static final String ETH_UTL = "http://120.55.86.146:8545";
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public EthService() {
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try {
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HttpService service = new HttpService(ETH_UTL);
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web3j = Web3j.build(service);
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// parity = Parity.build(service);
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// admin = Admin.build(service);
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} catch (Exception e) {
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System.out.println("liangjieshibao");
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// logger.error("==============虚拟币-以太坊链接获取失败！");
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e.printStackTrace();
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}
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}
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/**
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* 查询ETH余额
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*
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* @param address
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* @return
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*/
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public static BigDecimal getEthBlance(String address) {
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Web3j web3 = Web3j.build(new HttpService(ETH_UTL));
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EthGetBalance balanceWei;
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try {
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balanceWei = web3.ethGetBalance(address, DefaultBlockParameterName.LATEST).send();
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if (balanceWei.getResult() == null) {
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return null;
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}
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BigDecimal balanceInEther = Convert.fromWei(balanceWei.getBalance().toString(), Unit.ETHER);
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return balanceInEther;
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} catch (Exception e) {
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System.out.println("ETH查询失败：" + address);
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 创建ETH钱包
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*
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* @return
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*/
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public static Map<String, String> createEth() {
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Map<String, String> wallet = new HashMap<String, String>();
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try {
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String walletPassword = "secr3t";
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// 文件路径
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String walletDirectory = ethWalletPath;
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String walletName = WalletUtils.generateNewWalletFile(walletPassword, new File(walletDirectory));
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System.out.println("wallet location: " + walletDirectory + "/" + walletName);
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Credentials credentials = WalletUtils.loadCredentials(walletPassword, walletDirectory + "/" + walletName);
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String accountAddress = credentials.getAddress();
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String privateKey = credentials.getEcKeyPair().getPrivateKey().toString(16);
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// 钱包地址
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wallet.put("address", accountAddress);
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// 钱包私钥
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wallet.put("privateKey", privateKey);
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// 产生的钱包文件地址
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wallet.put("walletLocation", walletDirectory + "/" + walletName);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return wallet;
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}
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public boolean checkTransferResult(String hash) {
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// 0xa3e6a0ccc3aac30d866a86ca9c0477dd58b7b061787ba40b16c3844803273816 交易hash
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Request<?, EthGetTransactionReceipt> ethGetTransactionReceiptRequest = web3j.ethGetTransactionReceipt(hash);
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EthGetTransactionReceipt send = null;
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try {
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send = ethGetTransactionReceiptRequest.send();
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if(send!=null){
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TransactionReceipt result = send.getResult();
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if(result!=null){
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String status = result.getStatus();
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System.out.println(status);//0x1
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if("0x1".equals(status)){
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return true;
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}else{
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return false;
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}
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}
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}
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} catch (IOException e) {
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e.printStackTrace();
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return false;
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}
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return false;
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}
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public static void main(String[] args) throws IOException {
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HttpService service = new HttpService(ETH_UTL);
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Web3j build = Web3j.build(service);
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//Request<?, EthTransaction> ethTransactionRequest = build.ethGetTransactionByHash("0xa3e6a0ccc3aac30d866a86ca9c0477dd58b7b061787ba40b16c3844803273816");
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Request<?, EthGetTransactionReceipt> ethGetTransactionReceiptRequest = build.ethGetTransactionReceipt("0xa3e6a0ccc3aac30d866a86ca9c0477dd58b7b061787ba40b16c3844803273816");
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EthGetTransactionReceipt send = ethGetTransactionReceiptRequest.send();
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String status = send.getResult().getStatus();
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System.out.println(status);//0x1
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// EthTransaction send = ethTransactionRequest.send();
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// String input = send.getResult().getInput();
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// System.out.println(input);
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}
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/**
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*
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* 方法描述：获取代币余额
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*
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* @param fromAddress
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* @param
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* @param
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* @return long
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*/
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public BigDecimal tokenGetBalance(String fromAddress) {
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try {
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// 合约地址
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String contractAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7";
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int decimal = 6;
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String methodName = "balanceOf";
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List<Type> inputParameters = new ArrayList<>();
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List<TypeReference<?>> outputParameters = new ArrayList<>();
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Address address = new Address(fromAddress);
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inputParameters.add(address);
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TypeReference<Uint256> typeReference = new TypeReference<Uint256>() {
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};
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outputParameters.add(typeReference);
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Function function = new Function(methodName, inputParameters, outputParameters);
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String data = FunctionEncoder.encode(function);
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Transaction transaction = Transaction.createEthCallTransaction(fromAddress, contractAddress, data);
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EthCall ethCall;
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BigInteger balanceValue = BigInteger.ZERO;
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try {
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ethCall = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST).send();
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List<Type> results = FunctionReturnDecoder.decode(ethCall.getValue(), function.getOutputParameters());
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balanceValue = (BigInteger) results.get(0).getValue();
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} catch (IOException e) {
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e.printStackTrace();
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}
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double res = BigDecimalUtil.div(new BigDecimal(balanceValue).doubleValue(), Math.pow(10, decimal), 8);
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if (res > 0) {
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return new BigDecimal(res);
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}
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} catch (Exception e) {
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// logger.error("==============以太坊代币链接获取失败！");
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e.printStackTrace();
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}
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return BigDecimal.ZERO;
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}
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// USDT
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public String tokenSend(String privateKey, String fromAddress, String toAddress, String amount,String gas)
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throws InterruptedException, ExecutionException {
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// Web3j web3j = Web3j.build(new
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// HttpService("https://mainnet.infura.io/v3/882c66ebcfc141abbea22b948fa44321"));
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if(StringUtils.isBlank(gas)){
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gas="70";
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}
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String contractAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7";
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Credentials credentials = Credentials.create(privateKey);
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EthGetTransactionCount ethGetTransactionCount = web3j
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.ethGetTransactionCount(fromAddress, DefaultBlockParameterName.LATEST).sendAsync().get();
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BigInteger nonce = ethGetTransactionCount.getTransactionCount();
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Function function = new Function("transfer",
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Arrays.asList(new Address(toAddress), new Uint256(new BigInteger(amount))),
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Arrays.asList(new TypeReference<Type>() {
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}));
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String encodedFunction = FunctionEncoder.encode(function);
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RawTransaction rawTransaction = RawTransaction.createTransaction(nonce,
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Convert.toWei(gas, Convert.Unit.GWEI).toBigInteger(),// 给矿工开的转账单价 单价越高越快
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Convert.toWei("60000", Convert.Unit.WEI).toBigInteger(), contractAddress, encodedFunction);//里程上限
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// 10*80000/1000000000=0.0008 手续费
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byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials);
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String hexValue = Numeric.toHexString(signedMessage);
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// log.debug("transfer hexValue:" + hexValue);
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CompletableFuture<EthSendTransaction> ethSendTransactionCompletableFuture = web3j.ethSendRawTransaction(hexValue).sendAsync();
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EthSendTransaction ethSendTransaction = ethSendTransactionCompletableFuture.get();
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//return "hash";
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if (ethSendTransaction.hasError()) {
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// log.info("transfer error:", ethSendTransaction.getError().getMessage());
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return "";
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} else {
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String transactionHash = ethSendTransaction.getTransactionHash();
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// log.info("Transfer transactionHash:" + transactionHash);
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return transactionHash;
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}
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}
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public String ethSend(String privateKey, String fromAddress, String toAddress, String amount,String gas)
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throws InterruptedException, ExecutionException {
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// Web3j web3j = Web3j.build(new
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// HttpService("https://mainnet.infura.io/v3/882c66ebcfc141abbea22b948fa44321"));
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if(StringUtils.isBlank(gas)){
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gas="70";
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}
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Credentials credentials = Credentials.create(privateKey);
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EthGetTransactionCount ethGetTransactionCount = web3j
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.ethGetTransactionCount(fromAddress, DefaultBlockParameterName.LATEST).sendAsync().get();
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BigInteger nonce = ethGetTransactionCount.getTransactionCount();
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BigInteger value = Convert.toWei(amount, Convert.Unit.ETHER).toBigInteger();
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RawTransaction rawTransaction = RawTransaction.createEtherTransaction(nonce,
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Convert.toWei(gas, Convert.Unit.GWEI).toBigInteger(),
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Convert.toWei("60000", Convert.Unit.WEI).toBigInteger(), toAddress, value);
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byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials);
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String hexValue = Numeric.toHexString(signedMessage);
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EthSendTransaction ethSendTransaction = web3j.ethSendRawTransaction(hexValue).sendAsync().get();
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if (ethSendTransaction.hasError()) {
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// log.info("transfer error:", ethSendTransaction.getError().getMessage());
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return "";
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} else {
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String transactionHash = ethSendTransaction.getTransactionHash();
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// log.info("Transfer transactionHash:" + transactionHash);
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return transactionHash;
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}
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}
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}
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