Java ZipArchiveOutputStream.flush方法代碼示例

import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream; //導入方法依賴的package包/類
/**
 * Creates a zip file with random content.
 *
 * @author S3460
 * @param source the source
 * @return the zip file
 * @throws Exception the exception
 */
private ZipFile makeSourceZipFile(File source) throws Exception {
  ZipArchiveOutputStream out = new ZipArchiveOutputStream(new FileOutputStream(source));
  int size = randomSize(entryMaxSize);
  for (int i = 0; i < size; i++) {
    out.putArchiveEntry(new ZipArchiveEntry("zipentry" + i));
    int anz = randomSize(10);
    for (int j = 0; j < anz; j++) {
      byte[] bytes = getRandomBytes();
      out.write(bytes, 0, bytes.length);
    }
    out.flush();
    out.closeArchiveEntry();
  }
  //add leeres Entry
  out.putArchiveEntry(new ZipArchiveEntry("zipentry" + size));
  out.flush();
  out.closeArchiveEntry();
  out.flush();
  out.finish();
  out.close();
  return new ZipFile(source);
}
 

import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream; //導入方法依賴的package包/類
/**
 * Writes a modified version of zip_Source into target.
 *
 * @author S3460
 * @param zipSource the zip source
 * @param target the target
 * @return the zip file
 * @throws Exception the exception
 */
private ZipFile makeTargetZipFile(ZipFile zipSource, File target) throws Exception {
  ZipArchiveOutputStream out = new ZipArchiveOutputStream(new FileOutputStream(target));
  for (Enumeration<ZipArchiveEntry> enumer = zipSource.getEntries(); enumer.hasMoreElements();) {
    ZipArchiveEntry sourceEntry = enumer.nextElement();
    out.putArchiveEntry(new ZipArchiveEntry(sourceEntry.getName()));
    byte[] oldBytes = toBytes(zipSource, sourceEntry);
    byte[] newBytes = getRandomBytes();
    byte[] mixedBytes = mixBytes(oldBytes, newBytes);
    out.write(mixedBytes, 0, mixedBytes.length);
    out.flush();
    out.closeArchiveEntry();
  }
  out.putArchiveEntry(new ZipArchiveEntry("zipentry" + entryMaxSize + 1));
  byte[] bytes = getRandomBytes();
  out.write(bytes, 0, bytes.length);
  out.flush();
  out.closeArchiveEntry();
  out.putArchiveEntry(new ZipArchiveEntry("zipentry" + (entryMaxSize + 2)));
  out.closeArchiveEntry();
  out.flush();
  out.finish();
  out.close();
  return new ZipFile(targetFile);
}
 

import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream; //導入方法依賴的package包/類
/**
 * Create ZIP archive from file
 */
public static void createZip(File path, OutputStream os) throws IOException {
	log.debug("createZip({}, {})", new Object[]{path, os});

	if (path.exists() && path.canRead()) {
		ZipArchiveOutputStream zaos = new ZipArchiveOutputStream(os);
		zaos.setComment("Generated by OpenKM");
		zaos.setCreateUnicodeExtraFields(UnicodeExtraFieldPolicy.ALWAYS);
		zaos.setUseLanguageEncodingFlag(true);
		zaos.setFallbackToUTF8(true);
		zaos.setEncoding("UTF-8");

		log.debug("FILE {}", path);
		ZipArchiveEntry zae = new ZipArchiveEntry(path.getName());
		zaos.putArchiveEntry(zae);
		FileInputStream fis = new FileInputStream(path);
		IOUtils.copy(fis, zaos);
		fis.close();
		zaos.closeArchiveEntry();

		zaos.flush();
		zaos.finish();
		zaos.close();
	} else {
		throw new IOException("Can't access " + path);
	}

	log.debug("createZip: void");
}
 

import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream; //導入方法依賴的package包/類
/**
 * Computes the binary differences of two zip files. For all files contained in source and target which
 * are not equal, the binary difference is caluclated by using
 * {@link com.nothome.delta.Delta#compute(byte[], InputStream, DiffWriter)}.
 * If the files are equal, nothing is written to the output for them.
 * Files contained only in target and files to small for {@link com.nothome.delta.Delta} are copied to output.
 * Files contained only in source are ignored.
 * At last a list of all files contained in target is written to <code>META-INF/file.list</code> in output.
 *
 * @param sourceName the original zip file
 * @param targetName a modification of the original zip file
 * @param source the original zip file
 * @param target a modification of the original zip file
 * @param output the zip file where the patches have to be written to
 * @throws IOException if an error occurs reading or writing any entry in a zip file
 */
public void computeDelta(String sourceName, String targetName, ZipFile source, ZipFile target, ZipArchiveOutputStream output) throws IOException {
  ByteArrayOutputStream listBytes = new ByteArrayOutputStream();
  PrintWriter list = new PrintWriter(new OutputStreamWriter(listBytes));
  list.println(sourceName);
  list.println(targetName);
  computeDelta(source, target, output, list, "");
  list.close();
  ZipArchiveEntry listEntry = new ZipArchiveEntry("META-INF/file.list");
  output.putArchiveEntry(listEntry);
  output.write(listBytes.toByteArray());
  output.closeArchiveEntry();
  output.finish();
  output.flush();
}
 

import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream; //導入方法依賴的package包/類
/**
 * Close entry.
 *
 * @param output the output
 * @param outEntry the out entry
 * @param crc the crc
 * @throws IOException Signals that an I/O exception has occurred.
 */
private void closeEntry(ZipArchiveOutputStream output, ZipArchiveEntry outEntry, long crc) throws IOException {
  output.flush();
  output.closeArchiveEntry();
  if (outEntry.getCrc() != crc)
    throw new IOException("CRC mismatch for " + outEntry.getName());
}