1. 加入 Conflux 库
<dependency> <groupId>io.github.conflux-chain</groupId> <artifactId>conflux.web3j</artifactId> <version>1.1.0</version> </dependency>
import conflux.web3j.Account; import conflux.web3j.Cfx; import conflux.web3j.AccountManager; import conflux.web3j.contract.ContractCall; import conflux.web3j.contract.abi.DecodeUtil; import conflux.web3j.types.Address; import org.web3j.abi.FunctionReturnDecoder; import org.web3j.abi.TypeReference; import org.web3j.abi.datatypes.*; import org.web3j.abi.datatypes.generated.Uint256; import org.web3j.crypto.Bip39Wallet; import org.web3j.crypto.Credentials; import org.web3j.crypto.WalletUtils; import org.web3j.abi.Utils; import java.io.File; import java.math.BigInteger; import java.util.Arrays; import java.util.List; import java.util.Optional;
2. 调用 view 、pure 标记函数
// API地址 Cfx cfx = Cfx.create("https://test.confluxrpc.org/v2", 3, 1000); // 与合约建立连接 ContractCall contract = new ContractCall(cfx, new Address("cfxtest:acdhpa29xz0095w6rxbhv36yhjeub58vzp64s0swpk")); { // 单参数返回 String balance = contract.call("balanceOf", new Address("cfxtest:aasg762e552jwmp3pk73ve9j9tszezz9xu5abab3xb").getABIAddress()).sendAndGet(); BigInteger outBalance = DecodeUtil.decode(balance, Uint256.class); System.out.println("contract minter: " + outBalance); } { // 动态参数返回 String test = contract.call("tokens", new Uint256(0), new Uint256(11)).sendAndGet(); List<Type> values = FunctionReturnDecoder.decode(test, Utils.convert(Arrays.asList(new TypeReference<Uint256>() {}, new TypeReference<DynamicArray<Uint256>>() {}))); System.out.println("tokens 0 : " + (values.get(0)).getValue()); List<Uint256> list = (List<Uint256>)values.get(1).getValue(); for( Uint256 v : list) { System.out.println("tokens array : " + v.getValue()); } } { // 多返回参数 String test = contract.call("Test").sendAndGet(); List<Type> values = FunctionReturnDecoder.decode(test, Utils.convert(Arrays.asList(new TypeReference<Utf8String>() {}, new TypeReference<Utf8String>() {} ))); System.out.println((values.get(0)).getValue()); System.out.println((values.get(1)).getValue()); }
3. 调用普通公开逻辑函数
// 调用者私钥 String privateKey = "0x私钥"; // 合约地址 Address contractAddress = new Address("cfxtest:accb2fg8f6n9c92hszej0x1u88mprtbdhpp69v74a9"); // 调用者地址 Address recipient = new Address("cfxtest:aatc1wrjhetj6bnggdkhwd6hhybecrmpj228968j27"); // API地址 Cfx cfx = Cfx.create("https://test.confluxrpc.org/v2", 3, 1000); // 创建调用账户 Account account = Account.create(cfx, privateKey); // 设置调用设置 Account.Option opt = new Account.Option(); // 调用测试链 opt.withChainId(1); // 发起合约 try { // 发起合约 String txHash = account.call(opt, contractAddress, "DT_GenerateNFT", recipient.getABIAddress()); // 返回64位开头0x8的哈希交易地址， 具体内容可以在 https://testnet.confluxscan.io/ 输入返回哈希搜到 System.out.println("tx hash: " + txHash); } catch (Exception e) { // 调用失败 System.out.println(e.getMessage()); }
4. 获取交易信息返回值 - 函数返回较慢
// 订单转换 private static Call convert(Transaction tx) { Call call = new Call(); call.setFrom(tx.getFrom()); call.setNonce(tx.getNonce()); if (tx.getTo().isPresent()) { call.setTo(tx.getTo().get()); } call.setValue(tx.getValue()); call.setGasPrice(tx.getGasPrice()); call.setGas(tx.getGas()); call.setData(tx.getData()); call.setStorageLimit(tx.getStorageLimit()); return call; } // 获取交易信息返回值 - 函数返回较慢 private static String getTXHashReturnValue(Cfx cfx, String txHash) throws Exception { Transaction tx = cfx.getTransactionByHash(txHash).sendAndGet().get(); Receipt receipt = cfx.waitForReceipt(txHash); Call call = App.convert(tx); BigInteger execEpoch = receipt.getEpochNumber().subtract(BigInteger.ONE); StringResponse response = (StringResponse)cfx.call(call, new Epoch[] { Epoch.numberOf(execEpoch) }).sendWithRetry(); if (response.getError() != null) { throw new Exception(DecodeUtil.decodeErrorData(response.getError().getData())); } return response.getValue(); }
5. 新建地址
Cfx cfx = Cfx.create("https://test.confluxrpc.org/v2", 3, 1000); BigInteger epoch = cfx.getEpochNumber().sendAndGet(); System.out.println("Current epoch: " + epoch); AccountManager accountManager = new AccountManager(1); String path = "d:\\2"; Bip39Wallet wallet = WalletUtils.generateBip39Wallet("1234567678",new File(path)); System.out.println("助"+wallet.getMnemonic()); // 使用密码和助记词让账户解锁 Credentials credentials = WalletUtils.loadBip39Credentials("", wallet.getMnemonic()); // 获取账户地址 String address1 = credentials.getAddress(); System.out.println(address1); // 获取公钥 String publicKey = credentials.getEcKeyPair().getPublicKey().toString(16); System.out.println("公"+publicKey); // 获取私钥 String privateKey = credentials.getEcKeyPair().getPrivateKey().toString(16); System.out.println("私"+privateKey); // 获取地址 Optional<Address> c = accountManager.imports(privateKey,"12345678"); System.out.println(c.get().getAddress());
