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

x33g5p2x  于2022-01-24 转载在 其他  
字(8.7k)|赞(0)|评价(0)|浏览(125)

本文整理了Java中org.web3j.utils.Numeric.cleanHexPrefix()方法的一些代码示例，展示了Numeric.cleanHexPrefix()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.cleanHexPrefix()方法的具体详情如下：
包路径：org.web3j.utils.Numeric
类名称：Numeric
方法名：cleanHexPrefix

Numeric.cleanHexPrefix介绍

暂无

代码示例

代码示例来源：origin: web3j/web3j

protected RawTransaction(BigInteger nonce, BigInteger gasPrice, BigInteger gasLimit, String to,
            BigInteger value, String data) {
  this.nonce = nonce;
  this.gasPrice = gasPrice;
  this.gasLimit = gasLimit;
  this.to = to;
  this.value = value;
  if (data != null) {
    this.data = Numeric.cleanHexPrefix(data);
  }
}

代码示例来源：origin: web3j/web3j

public static boolean isValidPrivateKey(String privateKey) {
  String cleanPrivateKey = Numeric.cleanHexPrefix(privateKey);
  return cleanPrivateKey.length() == PRIVATE_KEY_LENGTH_IN_HEX;
}

代码示例来源：origin: web3j/web3j

public static boolean isValidAddress(String input) {
    String cleanInput = Numeric.cleanHexPrefix(input);

    try {
      Numeric.toBigIntNoPrefix(cleanInput);
    } catch (NumberFormatException e) {
      return false;
    }

    return cleanInput.length() == ADDRESS_LENGTH_IN_HEX;
  }
}

代码示例来源：origin: web3j/web3j

public static BigInteger toBigInt(String hexValue) {
  String cleanValue = cleanHexPrefix(hexValue);
  return toBigIntNoPrefix(cleanValue);
}

代码示例来源：origin: web3j/web3j

public static byte[] hexStringToByteArray(String input) {
  String cleanInput = cleanHexPrefix(input);
  int len = cleanInput.length();
  if (len == 0) {
    return new byte[] {};
  }
  byte[] data;
  int startIdx;
  if (len % 2 != 0) {
    data = new byte[(len / 2) + 1];
    data[0] = (byte) Character.digit(cleanInput.charAt(0), 16);
    startIdx = 1;
  } else {
    data = new byte[len / 2];
    startIdx = 0;
  }
  for (int i = startIdx; i < len; i += 2) {
    data[(i + 1) / 2] = (byte) ((Character.digit(cleanInput.charAt(i), 16) << 4)
        + Character.digit(cleanInput.charAt(i + 1), 16));
  }
  return data;
}

代码示例来源：origin: web3j/web3j

public static String getAddress(String publicKey) {
  String publicKeyNoPrefix = Numeric.cleanHexPrefix(publicKey);
  if (publicKeyNoPrefix.length() < PUBLIC_KEY_LENGTH_IN_HEX) {
    publicKeyNoPrefix = Strings.zeros(
        PUBLIC_KEY_LENGTH_IN_HEX - publicKeyNoPrefix.length())
        + publicKeyNoPrefix;
  }
  String hash = Hash.sha3(publicKeyNoPrefix);
  return hash.substring(hash.length() - ADDRESS_LENGTH_IN_HEX);  // right most 160 bits
}

代码示例来源：origin: web3j/web3j

/**
 * Checksum address encoding as per
 * <a href="https://github.com/ethereum/EIPs/blob/master/EIPS/eip-55.md">EIP-55</a>.
 *
 * @param address a valid hex encoded address
 * @return hex encoded checksum address
 */
public static String toChecksumAddress(String address) {
  String lowercaseAddress = Numeric.cleanHexPrefix(address).toLowerCase();
  String addressHash = Numeric.cleanHexPrefix(Hash.sha3String(lowercaseAddress));
  StringBuilder result = new StringBuilder(lowercaseAddress.length() + 2);
  result.append("0x");
  for (int i = 0; i < lowercaseAddress.length(); i++) {
    if (Integer.parseInt(String.valueOf(addressHash.charAt(i)), 16) >= 8) {
      result.append(String.valueOf(lowercaseAddress.charAt(i)).toUpperCase());
    } else {
      result.append(lowercaseAddress.charAt(i));
    }
  }
  return result.toString();
}

代码示例来源：origin: web3j/web3j

/**
 * Decode ABI encoded return values from smart contract function call.
 *
 * @param rawInput ABI encoded input
 * @param outputParameters list of return types as {@link TypeReference}
 * @return {@link List} of values returned by function, {@link Collections#emptyList()} if
 *         invalid response
 */
public static List<Type> decode(
    String rawInput, List<TypeReference<Type>> outputParameters) {
  String input = Numeric.cleanHexPrefix(rawInput);
  if (Strings.isEmpty(input)) {
    return Collections.emptyList();
  } else {
    return build(input, outputParameters);
  }
}

代码示例来源：origin: web3j/web3j

@Test
public void testCleanHexPrefix() {
  assertThat(Numeric.cleanHexPrefix(""), is(""));
  assertThat(Numeric.cleanHexPrefix("0123456789abcdef"), is("0123456789abcdef"));
  assertThat(Numeric.cleanHexPrefix("0x"), is(""));
  assertThat(Numeric.cleanHexPrefix("0x0123456789abcdef"), is("0123456789abcdef"));
}

代码示例来源：origin: web3j/web3j

String code = Numeric.cleanHexPrefix(ethGetCode.getCode());

代码示例来源：origin: web3j/web3j

public static <T extends Type> Type decodeIndexedValue(
    String rawInput, TypeReference<T> typeReference) {
  String input = Numeric.cleanHexPrefix(rawInput);

代码示例来源：origin: web3j/web3j

/**
 * Reverse name resolution as documented in the
 * <a href="https://docs.ens.domains/en/latest/userguide.html#reverse-name-resolution">specification</a>.
 * @param address an ethereum address, example: "0x314159265dd8dbb310642f98f50c066173c1259b"
 * @return a EnsName registered for provided address
 */
public String reverseResolve(String address) {
  if (WalletUtils.isValidAddress(address)) {
    String reverseName = Numeric.cleanHexPrefix(address) + REVERSE_NAME_SUFFIX;
    PublicResolver resolver = obtainPublicResolver(reverseName);
    byte[] nameHash = NameHash.nameHashAsBytes(reverseName);
    String name = null;
    try {
      name = resolver.name(nameHash).send();
    } catch (Exception e) {
      throw new RuntimeException("Unable to execute Ethereum request", e);
    }
    if (!isValidEnsName(name)) {
      throw new RuntimeException("Unable to resolve name for address: " + address);
    } else {
      return name;
    }
  } else {
    throw new EnsResolutionException("Address is invalid: " + address);
  }
}

代码示例来源：origin: org.web3j/crypto

protected RawTransaction(BigInteger nonce, BigInteger gasPrice, BigInteger gasLimit, String to,
            BigInteger value, String data) {
  this.nonce = nonce;
  this.gasPrice = gasPrice;
  this.gasLimit = gasLimit;
  this.to = to;
  this.value = value;
  if (data != null) {
    this.data = Numeric.cleanHexPrefix(data);
  }
}

代码示例来源：origin: io.daonomic.scalether/util

public static BigInteger toBigInt(String hexValue) {
  String cleanValue = cleanHexPrefix(hexValue);
  return toBigIntNoPrefix(cleanValue);
}

代码示例来源：origin: io.daonomic.scalether/util

public static String getAddress(String publicKey) {
    String publicKeyNoPrefix = Numeric.cleanHexPrefix(publicKey);

    if (publicKeyNoPrefix.length() < PUBLIC_KEY_LENGTH_IN_HEX) {
      publicKeyNoPrefix = Strings.zeros(
        PUBLIC_KEY_LENGTH_IN_HEX - publicKeyNoPrefix.length())
        + publicKeyNoPrefix;
    }
    String hash = Hash.sha3(publicKeyNoPrefix);
    return hash.substring(hash.length() - ADDRESS_LENGTH_IN_HEX);  // right most 160 bits
  }
}

代码示例来源：origin: org.web3j/crypto

public static String getAddress(String publicKey) {
  String publicKeyNoPrefix = Numeric.cleanHexPrefix(publicKey);
  if (publicKeyNoPrefix.length() < PUBLIC_KEY_LENGTH_IN_HEX) {
    publicKeyNoPrefix = Strings.zeros(
        PUBLIC_KEY_LENGTH_IN_HEX - publicKeyNoPrefix.length())
        + publicKeyNoPrefix;
  }
  String hash = Hash.sha3(publicKeyNoPrefix);
  return hash.substring(hash.length() - ADDRESS_LENGTH_IN_HEX);  // right most 160 bits
}

代码示例来源：origin: io.daonomic.scalether/util

public static byte[] hexStringToByteArray(String input) {
  String cleanInput = cleanHexPrefix(input);
  int len = cleanInput.length();
  if (len == 0) {
    return new byte[] {};
  }
  byte[] data;
  int startIdx;
  if (len % 2 != 0) {
    data = new byte[(len / 2) + 1];
    data[0] = (byte) Character.digit(cleanInput.charAt(0), 16);
    startIdx = 1;
  } else {
    data = new byte[len / 2];
    startIdx = 0;
  }
  for (int i = startIdx; i < len; i += 2) {
    data[(i + 1) / 2] = (byte) ((Character.digit(cleanInput.charAt(i), 16) << 4)
        + Character.digit(cleanInput.charAt(i + 1), 16));
  }
  return data;
}

代码示例来源：origin: org.web3j/crypto

/**
 * Checksum address encoding as per
 * <a href="https://github.com/ethereum/EIPs/blob/master/EIPS/eip-55.md">EIP-55</a>.
 *
 * @param address a valid hex encoded address
 * @return hex encoded checksum address
 */
public static String toChecksumAddress(String address) {
  String lowercaseAddress = Numeric.cleanHexPrefix(address).toLowerCase();
  String addressHash = Numeric.cleanHexPrefix(Hash.sha3String(lowercaseAddress));
  StringBuilder result = new StringBuilder(lowercaseAddress.length() + 2);
  result.append("0x");
  for (int i = 0; i < lowercaseAddress.length(); i++) {
    if (Integer.parseInt(String.valueOf(addressHash.charAt(i)), 16) >= 8) {
      result.append(String.valueOf(lowercaseAddress.charAt(i)).toUpperCase());
    } else {
      result.append(lowercaseAddress.charAt(i));
    }
  }
  return result.toString();
}

代码示例来源：origin: org.web3j/abi

/**
 * Decode ABI encoded return values from smart contract function call.
 *
 * @param rawInput ABI encoded input
 * @param outputParameters list of return types as {@link TypeReference}
 * @return {@link List} of values returned by function, {@link Collections#emptyList()} if
 *         invalid response
 */
public static List<Type> decode(
    String rawInput, List<TypeReference<Type>> outputParameters) {
  String input = Numeric.cleanHexPrefix(rawInput);
  if (Strings.isEmpty(input)) {
    return Collections.emptyList();
  } else {
    return build(input, outputParameters);
  }
}

代码示例来源：origin: TrustWallet/trust-wallet-android-source

public static byte[] createTokenTransferData(String to, BigInteger tokenAmount) {
    List<Type> params = Arrays.<Type>asList(new Address(to), new Uint256(tokenAmount));

    List<TypeReference<?>> returnTypes = Arrays.<TypeReference<?>>asList(new TypeReference<Bool>() {
    });

    Function function = new Function("transfer", params, returnTypes);
    String encodedFunction = FunctionEncoder.encode(function);
    return Numeric.hexStringToByteArray(Numeric.cleanHexPrefix(encodedFunction));
  }
}

内容来源于网络，如有侵权，请联系作者删除！

Numeric

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多
    • 蜀ICP备2022004421号-2 NULL123 https://www.null123.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com