package mail; 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.zip.ZipEntry; import java.util.zip.ZipFile; import java.util.zip.ZipOutputStream; /** * 压缩文件、解压压缩文件 * 2014年12月31日 */ public class ZIP { /** * 功能:压缩多个文件成一个zip文件 * @param srcfile：源文件列表 * @param zipfile：压缩后的文件 */ public static void zipFiles(File[] srcfile, File zipfile) { byte[] buf = new byte[1024]; try { // ZipOutputStream类：完成文件或文件夹的压缩 ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipfile)); for (int i = 0; i < srcfile.length; i++) { FileInputStream in = new FileInputStream(srcfile[i]); out.putNextEntry(new ZipEntry(srcfile[i].getName())); int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } out.closeEntry(); in.close(); } out.close(); System.out.println("压缩完成."); } catch (Exception e) { e.printStackTrace(); } } /** * 功能:解压缩 * @param zipfile：需要解压缩的文件 * @param descDir：解压后的目标目录 * @throws IOException */ @SuppressWarnings("rawtypes") public static void unZipFiles(File zipfile, String descDir) { File file = new File(descDir); if (!file.exists()) { try { file.mkdir(); } catch (Exception e) { e.printStackTrace(); } } try { ZipFile zf = new ZipFile(zipfile); for (Enumeration entries = zf.entries(); entries.hasMoreElements();) { ZipEntry entry = (ZipEntry) entries.nextElement(); String zipEntryName = entry.getName(); InputStream in = zf.getInputStream(entry); OutputStream out = new FileOutputStream(descDir + zipEntryName); byte[] buf1 = new byte[1024]; int len; while ((len = in.read(buf1)) > 0) { out.write(buf1, 0, len); } in.close(); out.close(); System.out.println("解压缩完成."); } zf.close(); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { // 需要解压缩的文件 File file = new File("D:\test"); File filenew = new File("D:\test.zip"); zipFiles(file.listFiles(), filenew); // 解压后的目标目录 String dir ="D:\workspace\"; unZipFiles(filenew, dir); } }