Package org.beangle.commons.archiver

Source Code of org.beangle.commons.archiver.ZipUtils

/* Copyright c 2005-2012.
* Licensed under GNU  LESSER General Public License, Version 3.
* http://www.gnu.org/licenses
*/
package org.beangle.commons.archiver;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.List;

import org.apache.commons.compress.archivers.ArchiveStreamFactory;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import org.apache.commons.compress.archivers.zip.ZipFile;
import org.apache.commons.compress.utils.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.beangle.commons.collection.CollectUtils;

public final class ZipUtils {
  /**
   * Don't let anyone instantiate this class.
   */
  private ZipUtils() {
  }

  public static File zip(List<String> fileNames, String zipPath) {
    return zip(fileNames, zipPath, null);
  }

  // 文件压缩
  public static File zip(List<String> fileNames, String zipPath, String encoding) {
    try {
      FileOutputStream f = new FileOutputStream(zipPath);
      ZipArchiveOutputStream zos = (ZipArchiveOutputStream) new ArchiveStreamFactory()
          .createArchiveOutputStream(ArchiveStreamFactory.ZIP, f);
      if (null != encoding) {
        zos.setEncoding(encoding);
      }
      for (int i = 0; i < fileNames.size(); i++) {
        String fileName = fileNames.get(i);
        String entryName = StringUtils.substringAfterLast(fileName, File.separator);
        ZipArchiveEntry entry = new ZipArchiveEntry(entryName);
        zos.putArchiveEntry(entry);
        FileInputStream fis = new FileInputStream(fileName);
        IOUtils.copy(fis, zos);
        fis.close();
        zos.closeArchiveEntry();
      }
      zos.close();
      return new File(zipPath);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  public static List<String> unzip(final File zipFile, final String destination) {
    return unzip(zipFile, destination, null);
  }

  public static List<String> unzip(final File zipFile, final String destination, String encoding) {
    List<String> fileNames = CollectUtils.newArrayList();
    String dest = destination;
    if (!destination.endsWith(File.separator)) {
      dest = destination + File.separator;
    }
    ZipFile file;
    try {
      file = null;
      if (null == encoding) file = new ZipFile(zipFile);
      else file = new ZipFile(zipFile, encoding);
      @SuppressWarnings("unchecked")
      Enumeration<ZipArchiveEntry> en = file.getEntries();
      ZipArchiveEntry ze = null;
      while (en.hasMoreElements()) {
        ze = en.nextElement();
        File f = new File(dest, ze.getName());
        if (ze.isDirectory()) {
          f.mkdirs();
          continue;
        } else {
          f.getParentFile().mkdirs();
          InputStream is = file.getInputStream(ze);
          OutputStream os = new FileOutputStream(f);
          IOUtils.copy(is, os);
          is.close();
          os.close();
          fileNames.add(f.getAbsolutePath());
        }
      }
      file.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return fileNames;
  }

  public static boolean isZipFile(File zipFile) {
    try {
      ZipFile zf = new ZipFile(zipFile);
      boolean isZip = zf.getEntries().hasMoreElements();
      zf.close();
      return isZip;
    } catch (IOException e) {
      return false;
    }
  }
}
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