java.io.RandomAccessFile.close()方法的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中java.io.RandomAccessFile.close方法的一些代码示例，展示了RandomAccessFile.close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。RandomAccessFile.close方法的具体详情如下：
包路径：java.io.RandomAccessFile
类名称：RandomAccessFile
方法名：close

RandomAccessFile.close介绍

[英]Closes this file.
[中]关闭此文件。

代码示例

代码示例来源：origin: libgdx/libgdx

public long length () {
  try {
    if (!exists()) {
      return 0;
    }
    RandomAccessFile raf = new RandomAccessFile(this, "r");
    long len = raf.length();
    raf.close();
    return len;
  } catch (IOException e) {
    return 0;
  }
}

代码示例来源：origin: apache/storm

private byte[] readFile(File file) throws IOException {
  RandomAccessFile raf = new RandomAccessFile(file, "r");
  byte[] buffer = new byte[(int) raf.length()];
  raf.readFully(buffer);
  raf.close();
  return buffer;
}

代码示例来源：origin: apache/geode

public synchronized void reopen(long lastPosition) throws IOException {
 if (isClosed) {
  throw new IOException("Random Access File is closed");
 }
 try {
  this.raf.close();
 } catch (IOException e) {
  // ignore
 }
 this.raf = new RandomAccessFile(file, mode);
 this.raf.seek(lastPosition);
}

代码示例来源：origin: stackoverflow.com

public static void aMethod(){
  RandomAccessFile f = new RandomAccessFile(new File("whereDidIPutTHatFile"), "rw");
  long aPositionWhereIWantToGo = 99;
  f.seek(aPositionWhereIWantToGo); // this basically reads n bytes in the file
  f.write("Im in teh fil, writn bites".getBytes());
  f.close();
}

代码示例来源：origin: konsoletyper/teavm

public void close() throws IOException {
  RandomAccessFile raf = mRaf;
  if (raf != null) {
    mRaf = null;
    raf.close();
    if (fileToDeleteOnClose != null) {
      new File(fileName).delete();
      // fileToDeleteOnClose.delete();
      fileToDeleteOnClose = null;
    }
  }
}

代码示例来源：origin: stackoverflow.com

try
  randomAccessWriter.write(buffer); // Write buffer to file
  payloadSize += buffer.length;
  if (bSamples == 16)
      randomAccessWriter = new RandomAccessFile(filePath, "rw");
    randomAccessWriter.close(); // Remove prepared file
  (new File(filePath)).delete();
    randomAccessWriter.seek(4); // Write size to RIFF header
    randomAccessWriter.writeInt(Integer.reverseBytes(36+payloadSize));
    randomAccessWriter.seek(40); // Write size to Subchunk2Size field
    randomAccessWriter.writeInt(Integer.reverseBytes(payloadSize));
    randomAccessWriter.close();

代码示例来源：origin: apache/avro

@Before
 public void setup() throws IOException {
 // needed to satisfy the framework only - input ignored in mapper
 String dir = DIR.getRoot().getPath();
 File infile = new File(dir + "/in");
 RandomAccessFile file = new RandomAccessFile(infile, "rw");
 // add some data so framework actually calls our mapper
 file.writeChars("aa bb cc\ndd ee ff\n");
 file.close();
}

代码示例来源：origin: apache/incubator-pinot

throws Exception {
String fileName = "test_single_col.dat";
File f = new File(fileName);
RandomAccessFile raf = new RandomAccessFile(f, "rw");
raf.close();

代码示例来源：origin: redisson/redisson

public static byte[] readBytes(File file, int fixedLength) throws IOException {
  if (!file.exists()) {
    throw new FileNotFoundException(MSG_NOT_FOUND + file);
  }
  if (!file.isFile()) {
    throw new IOException(MSG_NOT_A_FILE + file);
  }
  long len = file.length();
  if (len >= Integer.MAX_VALUE) {
    throw new IOException("File is larger then max array size");
  }
  if (fixedLength > -1 && fixedLength < len) {
    len = fixedLength;
  }
  byte[] bytes = new byte[(int) len];
  RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r");
  randomAccessFile.readFully(bytes);
  randomAccessFile.close();
  return bytes;
}

代码示例来源：origin: bumptech/glide

public static void toFile(@NonNull ByteBuffer buffer, @NonNull File file) throws IOException {
 buffer.position(0);
 RandomAccessFile raf = null;
 FileChannel channel = null;
 try {
  raf = new RandomAccessFile(file, "rw");
  channel = raf.getChannel();
  channel.write(buffer);
  channel.force(false /*metadata*/);
  channel.close();
  raf.close();
 } finally {
  if (channel != null) {
   try {
    channel.close();
   } catch (IOException e) {
    // Ignored.
   }
  }
  if (raf != null) {
   try {
    raf.close();
   } catch (IOException e) {
    // Ignored.
   }
  }
 }
}

代码示例来源：origin: smuyyh/BookReader

RandomAccessFile raf = new RandomAccessFile(file, "rw");
  if (skip < 0 || skip > raf.length()) {
    System.out.println("skip error");
    return;
  raf.setLength(raf.length() + b.length);
  for (long i = raf.length() - 1; i > b.length + skip - 1; i--) {
    raf.seek(i - b.length);
    byte temp = raf.readByte();
    raf.seek(i);
    raf.writeByte(temp);
  raf.seek(skip);
  raf.write(b);
  raf.close();
} catch (Exception e) {
  e.printStackTrace();

代码示例来源：origin: square/tape

@Test public void testNegativeSizeInHeaderThrows() throws IOException {
 RandomAccessFile emptyFile = new RandomAccessFile(file, "rwd");
 emptyFile.seek(0);
 emptyFile.writeInt(-2147483648);
 emptyFile.setLength(INITIAL_LENGTH);
 emptyFile.getChannel().force(true);
 emptyFile.close();
 try {
  newQueueFile();
  fail("Should have thrown about bad header length");
 } catch (IOException ex) {
  assertThat(ex.getMessage()).isIn(
    Arrays.asList("File is corrupt; length stored in header (-2147483648) is invalid.",
      "Unable to read version 0 format. Supported versions are 1 and legacy."));
 }
}

代码示例来源：origin: square/tape

@Test public void testSizeLessThanHeaderThrows() throws IOException {
 RandomAccessFile emptyFile = new RandomAccessFile(file, "rwd");
 emptyFile.setLength(INITIAL_LENGTH);
 if (forceLegacy) {
  emptyFile.writeInt(headerLength - 1);
 } else {
  emptyFile.writeInt(0x80000001);
  emptyFile.writeLong(headerLength - 1);
 }
 emptyFile.getChannel().force(true);
 emptyFile.close();
 try {
  newQueueFile();
  fail();
 } catch (IOException ex) {
  assertThat(ex.getMessage()).isIn(
    Arrays.asList("File is corrupt; length stored in header (15) is invalid.",
      "File is corrupt; length stored in header (31) is invalid."));
 }
}

代码示例来源：origin: apache/zookeeper

private void corruptFile(File f) throws IOException {
  RandomAccessFile outFile = new RandomAccessFile(f, "rw");
  outFile.write("fail servers".getBytes());
  outFile.close();
}

代码示例来源：origin: czy1121/update

private int copy(InputStream in, RandomAccessFile out) throws IOException, UpdateError {
  byte[] buffer = new byte[BUFFER_SIZE];
  BufferedInputStream bis = new BufferedInputStream(in, BUFFER_SIZE);
  try {
    out.seek(out.length());
    int bytes = 0;
    long previousBlockTime = -1;
    while (!isCancelled()) {
      int n = bis.read(buffer, 0, BUFFER_SIZE);
      if (n == -1) {
        break;
      }
      out.write(buffer, 0, n);
      bytes += n;
      checkNetwork();
      if (mSpeed != 0) {
        previousBlockTime = -1;
      } else if (previousBlockTime == -1) {
        previousBlockTime = System.currentTimeMillis();
      } else if ((System.currentTimeMillis() - previousBlockTime) > TIME_OUT) {
        throw new UpdateError(UpdateError.DOWNLOAD_NETWORK_TIMEOUT);
      }
    }
    return bytes;
  } finally {
    out.close();
    bis.close();
    in.close();
  }
}

代码示例来源：origin: eclipse-vertx/vert.x

public Void perform() {
  RandomAccessFile raf = null;
  try {
   String path = vertx.resolveFile(p).getAbsolutePath();
   if (len < 0) {
    throw new FileSystemException("Cannot truncate file to size < 0");
   }
   if (!Files.exists(Paths.get(path))) {
    throw new FileSystemException("Cannot truncate file " + path + ". Does not exist");
   }
   try {
    raf = new RandomAccessFile(path, "rw");
    raf.setLength(len);
   } finally {
    if (raf != null) raf.close();
   }
  } catch (IOException e) {
   throw new FileSystemException(e);
  }
  return null;
 }
};

代码示例来源：origin: google/ExoPlayer

private void reset() throws IOException {
 RandomAccessFile randomAccessFile = this.randomAccessFile;
 if (randomAccessFile == null) {
  return;
 }
 try {
  scratchByteBuffer.clear();
  scratchByteBuffer.putInt(bytesWritten - 8);
  randomAccessFile.seek(FILE_SIZE_MINUS_8_OFFSET);
  randomAccessFile.write(scratchBuffer, 0, 4);
  scratchByteBuffer.clear();
  scratchByteBuffer.putInt(bytesWritten - 44);
  randomAccessFile.seek(FILE_SIZE_MINUS_44_OFFSET);
  randomAccessFile.write(scratchBuffer, 0, 4);
 } catch (IOException e) {
  // The file may still be playable, so just log a warning.
  Log.w(TAG, "Error updating file size", e);
 }
 try {
  randomAccessFile.close();
 } finally {
  this.randomAccessFile = null;
 }
}

代码示例来源：origin: internetarchive/heritrix3

StringBuffer sb = new StringBuffer();
try {
  endPos = raf.length();
  lastPos = endPos;
    raf.seek(endPos - 1);
    raf.read(oneByte);
    if ((char) oneByte[0] != '\n') {
      pos = lastPos - BUFFERSIZE;
    raf.seek(pos);
    raf.seek(pos);
    if ((endPos - pos) < BUFFERSIZE) {
      int remainer = (int) (endPos - pos);
  info = buildDisplayingHeader(sb.length(), raf.length());
} catch (FileNotFoundException e) {
  sb = null;
  try {
    if (raf != null) {
      raf.close();

代码示例来源：origin: google/guava

public void testEqual() throws IOException {
 File asciiFile = getTestFile("ascii.txt");
 File i18nFile = getTestFile("i18n.txt");
 assertFalse(Files.equal(asciiFile, i18nFile));
 assertTrue(Files.equal(asciiFile, asciiFile));
 File temp = createTempFile();
 Files.copy(asciiFile, temp);
 assertTrue(Files.equal(asciiFile, temp));
 Files.copy(i18nFile, temp);
 assertTrue(Files.equal(i18nFile, temp));
 Files.copy(asciiFile, temp);
 RandomAccessFile rf = new RandomAccessFile(temp, "rw");
 rf.writeByte(0);
 rf.close();
 assertEquals(asciiFile.length(), temp.length());
 assertFalse(Files.equal(asciiFile, temp));
 assertTrue(Files.asByteSource(asciiFile).contentEquals(Files.asByteSource(asciiFile)));
 // 0-length files have special treatment (/proc, etc.)
 assertTrue(Files.equal(asciiFile, new BadLengthFile(asciiFile, 0)));
}

代码示例来源：origin: GlowstoneMC/Glowstone

public void close() throws IOException {
  file.getChannel().force(true);
  file.close();
}

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