Java压缩、解压代码集合。(支持中文)

import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.Enumeration; import java.util.Vector; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; import java.util.zip.ZipOutputStream; public class Zip { private static final int BUFFER = 1024; // Length of buffer private long length = 0; // A uncompress directory's length /** * Compress files to *.zip. * @param fileName: file to be compress */ public void compress(String fileName) { String targetFile = null; File sourceFile = new File(fileName); Vector<File> vector = getAllFiles(sourceFile); try { if (sourceFile.isDirectory()) { targetFile = fileName + ".zip"; } else { char ch = '.'; targetFile = fileName.substring(0, fileName.lastIndexOf((int)ch)) + ".zip"; } BufferedInputStream bis = null; BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(targetFile)); ZipOutputStream zipos = new ZipOutputStream(bos); byte data[] = new byte[BUFFER]; for (int i=0; i<vector.size(); i++) { File file = (File)vector.get(i); zipos.putNextEntry(new ZipEntry(getEntryName(fileName, file))); bis = new BufferedInputStream(new FileInputStream(file)); int count; while ((count=bis.read(data, 0, BUFFER)) != -1 ) { zipos.write(data, 0, count); } bis.close(); zipos.closeEntry(); } zipos.close(); bos.close(); showDetail(sourceFile, new File(targetFile)); } catch (IOException e) { e.printStackTrace(); } } /** * Uncompress *.zip files. * @param fileName: file to be uncompress */ public void uncompress(String fileName) { File sourceFile = new File(fileName); String filePath = sourceFile.getParent() + "/"; try { BufferedInputStream bis = null; BufferedOutputStream bos = null; ZipFile zipFile = new ZipFile(fileName); Enumeration en = zipFile.entries(); byte data[] = new byte[BUFFER]; while (en.hasMoreElements()) { ZipEntry entry = (ZipEntry)en.nextElement(); if (entry.isDirectory()) { new File(filePath + entry.getName()).mkdirs(); continue; } bis = new BufferedInputStream(zipFile.getInputStream(entry)); File file = new File(filePath + entry.getName()); File parent = file.getParentFile(); if (parent!=null && (!parent.exists())) { parent.mkdirs(); } bos = new BufferedOutputStream(new FileOutputStream(file)); int count; while ((count=bis.read(data, 0, BUFFER)) != -1) { bos.write(data, 0, count); } bis.close(); bos.close(); } zipFile.close(); } catch(IOException e) { e.printStackTrace(); } } /** * To get a directory's all files. * @param sourceFile: the source directory * @return the files' collection */ private Vector<File> getAllFiles(File sourceFile) { Vector<File> fileVector = new Vector<File>(); if (sourceFile.isDirectory()) { File[] files = sourceFile.listFiles(); for (int i=0; i<files.length; i++) { fileVector.addAll(getAllFiles(files[i])); } } else { fileVector.add(sourceFile); } return fileVector; } private String getEntryName(String base,File file) { File baseFile=new File(base); String filename=file.getPath(); if(baseFile.getParentFile().getParentFile()==null) return filename.substring(baseFile.getParent().length()); return filename.substring(baseFile.getParent().length()+1); } /** * Show the compress or uncompress detail. * @param sourceFile: the source file * @param targetFile: the target file */ private void showDetail(File sourceFile, File targetFile) { long sourceFileLength = getDirectoryLength(sourceFile); long targetFileLength = targetFile.length(); System.out.println("The uncompress file's size is " + sourceFileLength + " bytes."); System.out.println("The compress file's size is " + targetFileLength + " bytes."); System.out.println("The compress rate is " + ((double)(sourceFileLength-targetFileLength)/(double)sourceFileLength)*100 + "%"); } /** * Get length of a directory. * @param path: the directory * @return the length of directory */ private long getDirectoryLength(File path) { if (path.isDirectory()) { File[] files = path.listFiles(); for (int i=0; i<files.length; i++) { getDirectoryLength(files[i]); } } else { length += path.length(); } return length; } public static void main(String[] args) { // if (args.length != 2) { // System.out.println("Usage: java ZipCompress zip/unzip E:/java/apps/zip/text"); // return ; // } // Zip zip = new Zip(); // if (args[0].equals("zip")) { // zip.compress(args[1]); // } else if(args[0].equals("unzip")) { // zip.uncompress(args[1]); // } else { // System.out.println("Error"); // } Zip zip = new Zip(); zip.compress("E:/delete/20100422/单向接口"); } }