java操作压缩文件和解压文件实例代码（经测试）

package com.test; import java.io.*; import java.util.*; import java.util.zip.*; /**压缩解压文件 * @author Administrator * */ public class ZipFileList { public static void main(String[] args) throws Exception { ZipFileList zip = new ZipFileList(); zip.testReadZip();//解压 zip.testCreateZip(); } /** * zip压缩功能测试. 将d:\\temp\\zipout目录下的所有文件连同子目录压缩到d:\\temp\\out.zip. * * @throws Exception */ public void testCreateZip() throws Exception { // 压缩baseDir下所有文件，包括子目录 String baseDir = "d:\\zip\\"; List fileList = getSubFiles(new File(baseDir)); // 压缩文件名 ZipOutputStream zos = new ZipOutputStream(new FileOutputStream( "d:\\out.zip")); ZipEntry ze = null; byte[] buf = new byte[1024]; int readLen = 0; for (int i = 0; i < fileList.size(); i++) { File f = (File) fileList.get(i); System.out.print("Adding: " + f.getPath() + f.getName()); // 创建一个ZipEntry，并设置Name和其它的一些属性 ze = new ZipEntry(getAbsFileName(baseDir, f)); ze.setSize(f.length()); ze.setTime(f.lastModified()); // 将ZipEntry加到zos中，再写入实际的文件内容 zos.putNextEntry(ze); InputStream is = new BufferedInputStream(new FileInputStream(f)); while ((readLen = is.read(buf, 0, 1024)) != -1) { zos.write(buf, 0, readLen); } is.close(); System.out.println(" done..."); } zos.close(); } /** * 测试解压缩功能. 将d:\\download\\test.zip文件解压到d:\\temp\\zipout目录下. * * @throws Exception */ public void testReadZip() throws Exception { // InputStream is=new BufferedInputStream(new FileInputStream()); String baseDir = "d:\\software"; ZipFile zfile = new ZipFile("d:\\options_extra_sidebar.zip"); System.out.println(zfile.getName()); Enumeration zList = zfile.entries(); ZipEntry ze = null; byte[] buf = new byte[1024]; while (zList.hasMoreElements()) { // 从ZipFile中得到一个ZipEntry ze = (ZipEntry) zList.nextElement(); if (ze.isDirectory()) { System.out.println("Dir: " + ze.getName() + " skipped.."); continue; } System.out.println("Extracting: " + ze.getName() + "\t" + ze.getSize() + "\t" + ze.getCompressedSize()); // 以ZipEntry为参数得到一个InputStream，并写到OutputStream中 OutputStream os = new BufferedOutputStream(new FileOutputStream( getRealFileName(baseDir, ze.getName()))); InputStream is = new BufferedInputStream(zfile.getInputStream(ze)); int readLen = 0; while ((readLen = is.read(buf, 0, 1024)) != -1) { os.write(buf, 0, readLen); } is.close(); os.close(); System.out.println("Extracted: " + ze.getName()); } zfile.close(); } /** * 给定根目录，返回一个相对路径所对应的实际文件名. * * @param baseDir * 指定根目录 * @param absFileName * 相对路径名，来自于ZipEntry中的name * @return java.io.File 实际的文件 */ private File getRealFileName(String baseDir, String absFileName) { String[] dirs = absFileName.split("/"); // System.out.println(dirs.length); File ret = new File(baseDir); if (dirs.length > 1) { for (int i = 0; i < dirs.length - 1; i++) { ret = new File(ret, dirs[i]); } } if (!ret.exists()) { ret.mkdirs(); } ret = new File(ret, dirs[dirs.length - 1]); return ret; } /** * 给定根目录，返回另一个文件名的相对路径，用于zip文件中的路径. * * @param baseDir * java.lang.String 根目录 * @param realFileName * java.io.File 实际的文件名 * @return 相对文件名 */ private String getAbsFileName(String baseDir, File realFileName) { File real = realFileName; File base = new File(baseDir); String ret = real.getName(); while (true) { real = real.getParentFile(); if (real == null) break; if (real.equals(base)) break; else { ret = real.getName() + "/" + ret; } } return ret; } /** * 取得指定目录下的所有文件列表，包括子目录. * * @param baseDir * File 指定的目录 * @return 包含java.io.File的List */ private List getSubFiles(File baseDir) { List ret = new ArrayList(); // File base=new File(baseDir); File[] tmp = baseDir.listFiles(); for (int i = 0; i < tmp.length; i++) { if (tmp[i].isFile()) { ret.add(tmp[i]); } if (tmp[i].isDirectory()) { ret.addAll(getSubFiles(tmp[i])); } } return ret; } }