org.web3j.utils.Numeric.toHexString()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中org.web3j.utils.Numeric.toHexString()方法的一些代码示例，展示了Numeric.toHexString()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Numeric.toHexString()方法的具体详情如下：
包路径：org.web3j.utils.Numeric
类名称：Numeric
方法名：toHexString

Numeric.toHexString介绍

暂无

代码示例

代码示例来源：origin: web3j/web3j

public static String toHexString(byte[] input) {
  return toHexString(input, 0, input.length, true);
}

代码示例来源：origin: web3j/web3j

public static String toHexStringNoPrefix(byte[] input) {
  return toHexString(input, 0, input.length, false);
}

代码示例来源：origin: web3j/web3j

public String asString() {
  return Numeric.toHexString(value);
}

代码示例来源：origin: web3j/web3j

static String buildMethodId(String methodSignature) {
    byte[] input = methodSignature.getBytes();
    byte[] hash = Hash.sha3(input);
    return Numeric.toHexString(hash).substring(0, 10);
  }
}

代码示例来源：origin: web3j/web3j

/**
 * Keccak-256 hash function that operates on a UTF-8 encoded String.
 *
 * @param utf8String UTF-8 encoded string
 * @return hash value as hex encoded string
 */
public static String sha3String(String utf8String) {
  return Numeric.toHexString(sha3(utf8String.getBytes(StandardCharsets.UTF_8)));
}

代码示例来源：origin: web3j/web3j

/**
   * Utility method to provide the transaction hash for a given transaction.
   *
   * @param rawTransaction we wish to send
   * @param chainId of the intended chain
   * @param credentials of the sender
   * @return transaction hash as a hex encoded string
   */
  public static String generateTransactionHashHexEncoded(
      RawTransaction rawTransaction, byte chainId, Credentials credentials) {
    return Numeric.toHexString(generateTransactionHash(rawTransaction, chainId, credentials));
  }
}

代码示例来源：origin: web3j/web3j

public static String buildEventSignature(String methodSignature) {
    byte[] input = methodSignature.getBytes();
    byte[] hash = Hash.sha3(input);
    return Numeric.toHexString(hash);
  }
}

代码示例来源：origin: web3j/web3j

/**
 * Utility method to provide the transaction hash for a given transaction.
 *
 * @param rawTransaction we wish to send
 * @param credentials of the sender
 * @return transaction hash as a hex encoded string
 */
public static String generateTransactionHashHexEncoded(
    RawTransaction rawTransaction, Credentials credentials) {
  return Numeric.toHexString(generateTransactionHash(rawTransaction, credentials));
}

代码示例来源：origin: web3j/web3j

public static String nameHash(String ensName) {
  String normalisedEnsName = normalise(ensName);
  return Numeric.toHexString(nameHash(normalisedEnsName.split("\\.")));
}

代码示例来源：origin: web3j/web3j

/**
 * Keccak-256 hash function.
 *
 * @param hexInput hex encoded input data with optional 0x prefix
 * @return hash value as hex encoded string
 */
public static String sha3(String hexInput) {
  byte[] bytes = Numeric.hexStringToByteArray(hexInput);
  byte[] result = sha3(bytes);
  return Numeric.toHexString(result);
}

代码示例来源：origin: web3j/web3j

public String sign(RawTransaction rawTransaction) {
  byte[] signedMessage;
  if (chainId > ChainId.NONE) {
    signedMessage = TransactionEncoder.signMessage(rawTransaction, chainId, credentials);
  } else {
    signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials);
  }
  return Numeric.toHexString(signedMessage);
}

代码示例来源：origin: web3j/web3j

public static String generateContractAddress(String address, BigInteger nonce) {
    byte[] result = generateContractAddress(Numeric.hexStringToByteArray(address), nonce);
    return Numeric.toHexString(result);
  }
}

代码示例来源：origin: web3j/web3j

@Test
public void testToHexString() {
  assertThat(Numeric.toHexString(new byte[] {}), is("0x"));
  assertThat(Numeric.toHexString(new byte[] { 0x1 }), is("0x01"));
  assertThat(Numeric.toHexString(HEX_RANGE_ARRAY), is(HEX_RANGE_STRING));
}

代码示例来源：origin: web3j/web3j

@Test
public void testSignMessage() {
  byte[] signedMessage = TransactionEncoder.signMessage(
      createEtherTransaction(), SampleKeys.CREDENTIALS);
  String hexMessage = Numeric.toHexString(signedMessage);
  assertThat(hexMessage,
      is("0xf85580010a840add5355887fffffffffffffff80"
          + "1c"
          + "a046360b50498ddf5566551ce1ce69c46c565f1f478bb0ee680caf31fbc08ab727"
          + "a01b2f1432de16d110407d544f519fc91b84c8e16d3b6ec899592d486a94974cd0"));
}

代码示例来源：origin: web3j/web3j

@Test
public void testTransferEther() throws Exception {
  BigInteger nonce = getNonce(ALICE.getAddress());
  RawTransaction rawTransaction = createEtherTransaction(
      nonce, BOB.getAddress());
  byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, ALICE);
  String hexValue = Numeric.toHexString(signedMessage);
  EthSendTransaction ethSendTransaction =
      web3j.ethSendRawTransaction(hexValue).sendAsync().get();
  String transactionHash = ethSendTransaction.getTransactionHash();
  assertFalse(transactionHash.isEmpty());
  TransactionReceipt transactionReceipt =
      waitForTransactionReceipt(transactionHash);
  assertThat(transactionReceipt.getTransactionHash(), is(transactionHash));
}

代码示例来源：origin: web3j/web3j

@Test
public void testDeploySmartContract() throws Exception {
  BigInteger nonce = getNonce(ALICE.getAddress());
  RawTransaction rawTransaction = createSmartContractTransaction(nonce);
  byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, ALICE);
  String hexValue = Numeric.toHexString(signedMessage);
  EthSendTransaction ethSendTransaction =
      web3j.ethSendRawTransaction(hexValue).sendAsync().get();
  String transactionHash = ethSendTransaction.getTransactionHash();
  assertFalse(transactionHash.isEmpty());
  TransactionReceipt transactionReceipt =
      waitForTransactionReceipt(transactionHash);
  assertThat(transactionReceipt.getTransactionHash(), is(transactionHash));
  assertFalse("Contract execution ran out of gas",
      rawTransaction.getGasLimit().equals(transactionReceipt.getGasUsed()));
}

代码示例来源：origin: web3j/web3j

private String execute(
    Credentials credentials, Function function, String contractAddress) throws Exception {
  BigInteger nonce = getNonce(credentials.getAddress());
  String encodedFunction = FunctionEncoder.encode(function);
  RawTransaction rawTransaction = RawTransaction.createTransaction(
      nonce,
      GAS_PRICE,
      GAS_LIMIT,
      contractAddress,
      encodedFunction);
  byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials);
  String hexValue = Numeric.toHexString(signedMessage);
  EthSendTransaction transactionResponse = web3j.ethSendRawTransaction(hexValue)
      .sendAsync().get();
  return transactionResponse.getTransactionHash();
}

代码示例来源：origin: web3j/web3j

@Test
public void testSignTransaction() throws Exception {
  boolean accountUnlocked = unlockAccount();
  assertTrue(accountUnlocked);
  RawTransaction rawTransaction = createTransaction();
  byte[] encoded = TransactionEncoder.encode(rawTransaction);
  byte[] hashed = Hash.sha3(encoded);
  EthSign ethSign = web3j.ethSign(ALICE.getAddress(), Numeric.toHexString(hashed))
      .sendAsync().get();
  String signature = ethSign.getSignature();
  assertNotNull(signature);
  assertFalse(signature.isEmpty());
}

代码示例来源：origin: web3j/web3j

private String sendCreateContractTransaction(
    Credentials credentials, BigInteger initialSupply) throws Exception {
  BigInteger nonce = getNonce(credentials.getAddress());
  String encodedConstructor =
      FunctionEncoder.encodeConstructor(
          Arrays.asList(
              new Uint256(initialSupply),
              new Utf8String("web3j tokens"),
              new Uint8(BigInteger.TEN),
              new Utf8String("w3j$")));
  RawTransaction rawTransaction = RawTransaction.createContractTransaction(
      nonce,
      GAS_PRICE,
      GAS_LIMIT,
      BigInteger.ZERO,
      getHumanStandardTokenBinary() + encodedConstructor);
  byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials);
  String hexValue = Numeric.toHexString(signedMessage);
  EthSendTransaction transactionResponse = web3j.ethSendRawTransaction(hexValue)
      .sendAsync().get();
  return transactionResponse.getTransactionHash();
}

代码示例来源：origin: web3j/web3j

@Test
public void testDecoding() throws Exception {
  BigInteger nonce = BigInteger.ZERO;
  BigInteger gasPrice = BigInteger.ONE;
  BigInteger gasLimit = BigInteger.TEN;
  String to = "0x0add5355";
  BigInteger value = BigInteger.valueOf(Long.MAX_VALUE);
  RawTransaction rawTransaction = RawTransaction.createEtherTransaction(
      nonce, gasPrice, gasLimit, to, value);
  byte[] encodedMessage = TransactionEncoder.encode(rawTransaction);
  String hexMessage = Numeric.toHexString(encodedMessage);
  RawTransaction result = TransactionDecoder.decode(hexMessage);
  assertNotNull(result);
  assertEquals(nonce, result.getNonce());
  assertEquals(gasPrice, result.getGasPrice());
  assertEquals(gasLimit, result.getGasLimit());
  assertEquals(to, result.getTo());
  assertEquals(value, result.getValue());
  assertEquals("", result.getData());
}

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