本文整理了Java中java.util.Base64.getDecoder()方法的一些代码示例，展示了Base64.getDecoder()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。Base64.getDecoder()方法的具体详情如下：
包路径：java.util.Base64
类名称：Base64
方法名：getDecoder

Base64.getDecoder介绍

暂无

代码示例

代码示例来源：origin: spring-projects/spring-framework

/**
 * Base64-decode the given byte array.
 * @param src the encoded byte array
 * @return the original byte array
 */
public static byte[] decode(byte[] src) {
  if (src.length == 0) {
    return src;
  }
  return Base64.getDecoder().decode(src);
}

代码示例来源：origin: gocd/gocd

public byte[] getDataAsBytes() {
  if (dataAsBytes == null) {
    dataAsBytes = Base64.getDecoder().decode(data);
  }
  return dataAsBytes;
}

代码示例来源：origin: gocd/gocd

public Image(String contentType, String data, String hash) {
  this.contentType = contentType;
  this.data = data;
  this.hash = hash;
  this.dataAsBytes = Base64.getDecoder().decode(data);
}

代码示例来源：origin: org.springframework/spring-core

/**
 * Base64-decode the given byte array.
 * @param src the encoded byte array
 * @return the original byte array
 */
public static byte[] decode(byte[] src) {
  if (src.length == 0) {
    return src;
  }
  return Base64.getDecoder().decode(src);
}

代码示例来源：origin: eclipse-vertx/vert.x

@Override
public Buffer binaryValue() {
 return value != null ? Buffer.buffer(Base64.getDecoder().decode((String) value)) : null;
}

代码示例来源：origin: eclipse-vertx/vert.x

/**
 * Like {@link #getBinary(String)} but specifying a default value to return if there is no entry.
 *
 * @param key  the key to lookup
 * @param def  the default value to use if the entry is not present
 * @return the value or {@code def} if no entry present
 */
public byte[] getBinary(String key, byte[] def) {
 Objects.requireNonNull(key);
 Object val = map.get(key);
 return val != null || map.containsKey(key) ? (val == null ? null : Base64.getDecoder().decode((String)val)) : def;
}

代码示例来源：origin: stackoverflow.com

// decode the base64 encoded string
byte[] decodedKey = Base64.getDecoder().decode(encodedKey);
// rebuild key using SecretKeySpec
SecretKey originalKey = new SecretKeySpec(decodedKey, 0, decodedKey.length, "AES");

代码示例来源：origin: Graylog2/graylog2-server

private String decodeBase64(String s) {
  try {
    return new String(Base64.getDecoder().decode(s), StandardCharsets.US_ASCII);
  } catch (IllegalArgumentException e) {
    return "";
  }
}

代码示例来源：origin: stackoverflow.com

import java.util.Base64;

byte[] bytes = "Hello, World!".getBytes("UTF-8");
String encoded = Base64.getEncoder().encodeToString(bytes);
byte[] decoded = Base64.getDecoder().decode(encoded);

代码示例来源：origin: apache/kafka

public static ScramCredential credentialFromString(String str) {
  Properties props = toProps(str);
  if (props.size() != 4 || !props.containsKey(SALT) || !props.containsKey(STORED_KEY) ||
      !props.containsKey(SERVER_KEY) || !props.containsKey(ITERATIONS)) {
    throw new IllegalArgumentException("Credentials not valid: " + str);
  }
  byte[] salt = Base64.getDecoder().decode(props.getProperty(SALT));
  byte[] storedKey = Base64.getDecoder().decode(props.getProperty(STORED_KEY));
  byte[] serverKey = Base64.getDecoder().decode(props.getProperty(SERVER_KEY));
  int iterations = Integer.parseInt(props.getProperty(ITERATIONS));
  return new ScramCredential(salt, storedKey, serverKey, iterations);
}

代码示例来源：origin: apache/flink

public static String decodeBase64ToString(String base64) {
  return new String(java.util.Base64.getDecoder().decode(base64.getBytes(UTF_8)), UTF_8);
}

代码示例来源：origin: jenkinsci/jenkins

/**
 * @return the decoded base64 of the cookie or {@code null} if the value was not correctly encoded
 */
private @CheckForNull String decodeCookieBase64(@Nonnull String base64EncodedValue){
  for (int j = 0; j < base64EncodedValue.length() % 4; j++) {
    base64EncodedValue = base64EncodedValue + "=";
  }
  try {
    // any charset should be fine but better safe than sorry
    byte[] decodedPlainValue = java.util.Base64.getDecoder().decode(base64EncodedValue.getBytes(StandardCharsets.UTF_8));
    return new String(decodedPlainValue, StandardCharsets.UTF_8);
  } catch (IllegalArgumentException e) {
    return null;
  }
}

代码示例来源：origin: stackoverflow.com

byte[] message = "hello world".getBytes(StandardCharsets.UTF_8);
String encoded = Base64.getEncoder().encodeToString(message);
byte[] decoded = Base64.getDecoder().decode(encoded);

System.out.println(encoded);
System.out.println(new String(decoded, StandardCharsets.UTF_8));

代码示例来源：origin: apache/kafka

public ClientFinalMessage(byte[] messageBytes) throws SaslException {
  String message = toMessage(messageBytes);
  Matcher matcher = PATTERN.matcher(message);
  if (!matcher.matches())
    throw new SaslException("Invalid SCRAM client final message format: " + message);
  this.channelBinding = Base64.getDecoder().decode(matcher.group("channel"));
  this.nonce = matcher.group("nonce");
  this.proof = Base64.getDecoder().decode(matcher.group("proof"));
}
public ClientFinalMessage(byte[] channelBinding, String nonce) {

代码示例来源：origin: gocd/gocd

public static String decryptUsingAES(SecretKey secretKey, String dataToDecrypt) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    Cipher aesCipher = Cipher.getInstance("AES");
    aesCipher.init(Cipher.DECRYPT_MODE, secretKey);
    byte[] bytePlainText = aesCipher.doFinal(Base64.getDecoder().decode(dataToDecrypt));
    return new String(bytePlainText);
  }
}

代码示例来源：origin: eclipse-vertx/vert.x

@Override
 public byte[] deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
  String text = p.getText();
  try {
   return Base64.getDecoder().decode(text);
  } catch (IllegalArgumentException e) {
   throw new InvalidFormatException(p, "Expected a base64 encoded byte array", text, Instant.class);
  }
 }
}

代码示例来源：origin: prestodb/presto

private static byte[] toByteArray(Object obj, Type type, String name)
{
  if (obj instanceof byte[]) {
    return (byte[]) obj;
  }
  else if (obj instanceof String) {
    return Base64.getDecoder().decode((String) obj);
  }
  else {
    handleInvalidValue(name, type, obj);
    return null;
  }
}

代码示例来源：origin: prestodb/presto

private static String decodeCredentials(String credentials)
    throws AuthenticationException
{
  // The original basic auth RFC 2617 did not specify a character set.
  // Many clients, including the Presto CLI and JDBC driver, use ISO-8859-1.
  // RFC 7617 allows the server to specify UTF-8 as the character set during
  // the challenge, but this doesn't help as most clients pre-authenticate.
  try {
    return new String(Base64.getDecoder().decode(credentials), ISO_8859_1);
  }
  catch (IllegalArgumentException e) {
    throw new AuthenticationException("Invalid base64 encoded credentials");
  }
}

代码示例来源：origin: prestodb/presto

public static String decodeViewData(String data)
{
  checkCondition(data.startsWith(VIEW_PREFIX), HIVE_INVALID_VIEW_DATA, "View data missing prefix: %s", data);
  checkCondition(data.endsWith(VIEW_SUFFIX), HIVE_INVALID_VIEW_DATA, "View data missing suffix: %s", data);
  data = data.substring(VIEW_PREFIX.length());
  data = data.substring(0, data.length() - VIEW_SUFFIX.length());
  return new String(Base64.getDecoder().decode(data), UTF_8);
}

代码示例来源：origin: apache/storm

/**
 * Deserialize an object stored in a string. The String is assumed to be a base64 encoded string containing the bytes to actually
 * deserialize.
 *
 * @param str   the encoded string.
 * @param clazz the thrift class we are expecting.
 * @param <T>   The type of clazz
 * @return the decoded object
 */
public static <T> T deserializeFromString(String str, Class<T> clazz) {
  return deserialize(Base64.getDecoder().decode(str), clazz);
}