java.nio.charset.Charset.decode()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中java.nio.charset.Charset.decode()方法的一些代码示例，展示了Charset.decode()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。Charset.decode()方法的具体详情如下：
包路径：java.nio.charset.Charset
类名称：Charset
方法名：decode

Charset.decode介绍

[英]Returns a new CharBuffer containing the characters decoded from buffer. This method uses CodingErrorAction.REPLACE.

Applications should generally create a CharsetDecoder using #newDecoderfor performance.
[中]返回包含从缓冲区解码的字符的新CharBuffer。此方法使用CodingErrorAction。代替
应用程序通常应使用#newdecoderforperformance创建CharsetDecoder。

代码示例

代码示例来源：origin: apache/kafka

/**
 * Attempt to read a file as a string
 * @throws IOException
 */
public static String readFileAsString(String path, Charset charset) throws IOException {
  if (charset == null) charset = Charset.defaultCharset();
  try (FileChannel fc = FileChannel.open(Paths.get(path))) {
    MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
    return charset.decode(bb).toString();
  }
}

代码示例来源：origin: stackoverflow.com

Charset utf8charset = Charset.forName("UTF-8");
Charset iso88591charset = Charset.forName("ISO-8859-1");

ByteBuffer inputBuffer = ByteBuffer.wrap(new byte[]{(byte)0xC3, (byte)0xA2});

// decode UTF-8
CharBuffer data = utf8charset.decode(inputBuffer);

// encode ISO-8559-1
ByteBuffer outputBuffer = iso88591charset.encode(data);
byte[] outputData = outputBuffer.array();

代码示例来源：origin: apache/nifi

/**
 * Reads a string encoded with UTF_16LE of a given length
 *
 * @param length the number of characters
 * @return the string
 */
public String readWString(int length) {
  int numBytes = length * 2;
  String result = StandardCharsets.UTF_16LE.decode(ByteBuffer.wrap(bytes, position, numBytes)).toString();
  position += numBytes;
  return result;
}

代码示例来源：origin: centic9/jgit-cookbook

private static String getTextFromFilePath(Path file) throws IOException {
    byte[] bytes = Files.readAllBytes(file);
    CharBuffer chars = Charset.defaultCharset().decode(ByteBuffer.wrap(bytes));
    return chars.toString();
  }
}

代码示例来源：origin: stackoverflow.com

System.out.println(Charset.defaultCharset().name());
ByteBuffer bybf = ByteBuffer.wrap("Olé".getBytes());
Charset utf16 = Charset.forName("UTF-16");
CharBuffer chbf = utf16.decode(bybf);
System.out.println(chbf);
bybf = ByteBuffer.wrap("Olé".getBytes(utf16));
chbf = utf16.decode(bybf);
System.out.println(chbf);

代码示例来源：origin: Atmosphere/atmosphere

/**
 * Decodes octets to characters using the UTF-8 decoding and appends
 * the characters to a StringBuffer.
 * @return the index to the next unchecked character in the string to decode
 */
private static int decodeOctets(int i, ByteBuffer bb, StringBuilder sb) {
  // If there is only one octet and is an ASCII character
  if (bb.limit() == 1 && (bb.get(0) & 0xFF) < 0x80) {
    // Octet can be appended directly
    sb.append((char) bb.get(0));
    return i + 2;
  } else {
    // 
    CharBuffer cb = UTF_8_CHARSET.decode(bb);
    sb.append(cb.toString());
    return i + bb.limit() * 3 - 1;
  }
}

代码示例来源：origin: org.apache.commons/commons-text

@Test
public void testAppendTakingTwoIntsWithIndexOutOfBoundsThrowsStringIndexOutOfBoundsExceptionTwo() {
  assertThatExceptionOfType(StringIndexOutOfBoundsException.class).isThrownBy(() -> {
    final Charset charset = Charset.defaultCharset();
    final ByteBuffer byteBuffer = charset.encode("asdf");
    final CharBuffer charBuffer = charset.decode(byteBuffer);
    new StrBuilder().append(charBuffer, 933, 654);
  });
}

代码示例来源：origin: brianfrankcooper/YCSB

/** Consumes remaining contents of this object, and returns them as a string. */
public String toString() {
 Charset cset = Charset.forName("UTF-8");
 CharBuffer cb = cset.decode(ByteBuffer.wrap(this.toArray()));
 return cb.toString();
}

代码示例来源：origin: centic9/jgit-cookbook

private static String getTextFromFilePath(Path file) throws IOException {
    byte[] bytes = Files.readAllBytes(file);
    CharBuffer chars = Charset.defaultCharset().decode(ByteBuffer.wrap(bytes));
    return chars.toString();
  }
}

代码示例来源：origin: geoserver/geoserver

/** Converts byte array to char array. */
public static char[] toChars(byte[] b, Charset charset) {
  CharBuffer buff = charset.decode(ByteBuffer.wrap(b));
  char[] tmp = new char[buff.limit()];
  buff.get(tmp);
  return tmp;
}

代码示例来源：origin: looly/hutool

/**
 * 将编码的byteBuffer数据转换为字符串
 * 
 * @param data 数据
 * @param charset 字符集，如果为空使用当前系统字符集
 * @return 字符串
 */
public static String str(ByteBuffer data, Charset charset) {
  if (null == charset) {
    charset = Charset.defaultCharset();
  }
  return charset.decode(data).toString();
}

代码示例来源：origin: jersey/jersey

/**
 * Decodes octets to characters using the UTF-8 decoding and appends
 * the characters to a StringBuffer.
 *
 * @return the index to the next unchecked character in the string to decode
 */
private static int decodeOctets(final int i, final ByteBuffer bb, final StringBuilder sb) {
  // If there is only one octet and is an ASCII character
  if (bb.limit() == 1 && (bb.get(0) & 0xFF) < 0x80) {
    // Octet can be appended directly
    sb.append((char) bb.get(0));
    return i + 2;
  } else {
    //
    final CharBuffer cb = UTF_8_CHARSET.decode(bb);
    sb.append(cb.toString());
    return i + bb.limit() * 3 - 1;
  }
}

代码示例来源：origin: org.apache.commons/commons-text

@Test
public void testAppendTakingTwoIntsWithZeroThrowsStringIndexOutOfBoundsException() {
  assertThatExceptionOfType(StringIndexOutOfBoundsException.class).isThrownBy(() -> {
    final Charset charset = Charset.defaultCharset();
    final ByteBuffer byteBuffer = charset.encode("end < start");
    final CharBuffer charBuffer = charset.decode(byteBuffer);
    new StrBuilder(630).append(charBuffer, 0, 630);
  });
}

代码示例来源：origin: jenkinsci/jenkins

raf.readFully(tail);
String tails = cs.decode(java.nio.ByteBuffer.wrap(tail)).toString();

代码示例来源：origin: stackoverflow.com

String content = readFile(jsonFilePath, Charset.defaultCharset());

static String readFile(String path, Charset encoding) 
  throws IOException 
{
   byte[] encoded = Files.readAllBytes(Paths.get(path));
   return encoding.decode(ByteBuffer.wrap(encoded)).toString();
}

代码示例来源：origin: commonsguy/cw-omnibus

static char[] toChars(byte[] bytes) {
  Charset charset=Charset.forName("UTF-8");
  ByteBuffer byteBuffer=ByteBuffer.wrap(bytes);
  CharBuffer charBuffer=charset.decode(byteBuffer);
  char[] chars=Arrays.copyOf(charBuffer.array(), charBuffer.limit());

  Arrays.fill(charBuffer.array(), '\u0000'); // clear the cleartext
  Arrays.fill(byteBuffer.array(), (byte) 0); // clear the ciphertext

  return chars;
 }
}

代码示例来源：origin: looly/hutool

/**
 * 将编码的byteBuffer数据转换为字符串
 * 
 * @param data 数据
 * @param charset 字符集，如果为空使用当前系统字符集
 * @return 字符串
 */
public static String str(ByteBuffer data, Charset charset) {
  if (null == charset) {
    charset = Charset.defaultCharset();
  }
  return charset.decode(data).toString();
}

代码示例来源：origin: jersey/jersey

/**
 * Decodes octets to characters using the UTF-8 decoding and appends
 * the characters to a StringBuffer.
 *
 * @return the index to the next unchecked character in the string to decode
 */
private static int decodeOctets(final int i, final ByteBuffer bb, final StringBuilder sb) {
  // If there is only one octet and is an ASCII character
  if (bb.limit() == 1 && (bb.get(0) & 0xFF) < 0x80) {
    // Octet can be appended directly
    sb.append((char) bb.get(0));
    return i + 2;
  } else {
    //
    final CharBuffer cb = UTF_8_CHARSET.decode(bb);
    sb.append(cb.toString());
    return i + bb.limit() * 3 - 1;
  }
}

代码示例来源：origin: org.apache.commons/commons-text

@Test
public void testAppendTakingTwoIntsWithZeroThrowsStringIndexOutOfBoundsException() {
  assertThatExceptionOfType(StringIndexOutOfBoundsException.class).isThrownBy(() -> {
    final Charset charset = Charset.defaultCharset();
    final ByteBuffer byteBuffer = charset.encode("end < start");
    final CharBuffer charBuffer = charset.decode(byteBuffer);
    new TextStringBuilder(630).append(charBuffer, 0, 630);
  });
}

代码示例来源：origin: spotify/helios

@Override
 public void write(int val) throws IOException {
  if (System.currentTimeMillis() > deadline) {
   throw new IOException("timed out trying to succeed");
  }
  lineBuffer[counter] = (byte) val;
  counter++;
  if (val != 10) {
   return;
  }
  final String line = Charsets.UTF_8.decode(
    ByteBuffer.wrap(lineBuffer, 0, counter)).toString();
  outputLines.add(line);
  counter = 0;
  if (line.contains(abbreviatedTestHost) && !line.contains("UNKNOWN")) {
   success.set(true);
   throw new IOException("output closed");
  }
 }
};

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