在java项目中使用ant包如何实现压缩和解压缩

import Java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import java.util.zip.CRC32;import java.util.zip.CheckedOutputStream;import java.util.zip.Deflater;import org.apache.tools.zip.ZipEntry;import org.apache.tools.zip.ZipOutputStream;public class AntZipUtil { private static List list = new ArrayList(); private static List listFile(String path) { File file = new File(path); String[] array = null; String sTemp = ""; if (!file.isDirectory()) {  return null; } array = file.list(); if (array.length > 0) {  for (int i = 0; i < array.length; i++) {  sTemp = path + array[i];  file = new File(sTemp);  if (file.isDirectory()) {   listFile(sTemp + "/");  } else   list.add(sTemp);  } } else {  return null; } return list; } public static void zip(String needtozipfilepath, String zipfilepath){ try {  byte[] b = new byte[512];  File needtozipfile = new File(needtozipfilepath);  if (!needtozipfile.exists()) {  System.err.println("指定的要压缩的文件或目录不存在.");  return;  }  String zipFile = zipfilepath;  File targetFile = new File(zipFile.substring(0, zipFile.indexOf("\\") + 1));  if (!targetFile.exists()) {  System.out.println("指定的目标文件或目录不存在.");  return;  }  String filepath = needtozipfilepath;  List fileList = listFile(filepath);  FileOutputStream fileOutputStream = new FileOutputStream(zipFile);  CheckedOutputStream cs = new CheckedOutputStream(fileOutputStream,new CRC32());  ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(cs));  for (int i = 0; i < fileList.size(); i++) {  InputStream in = new FileInputStream((String) fileList.get(i));  String fileName = ((String) fileList.get(i)).replace(File.separatorChar, '/');  fileName = fileName.substring(fileName.indexOf("/") + 1);  ZipEntry e = new ZipEntry(fileName);  out.putNextEntry(e);  int len = 0;  while ((len = in.read(b)) != -1) {   out.write(b, 0, len);  }  out.closeEntry();  }  out.close(); } catch (Exception e) {  e.printStackTrace(); } } // ///////////////////////////////////////  public static boolean zip(String baseDirName, String[] fileNames,  String targetFileName, String encoding) { boolean flag = false; try {  // 判断 "压缩的根目录"是否存在! 是否是一个文件夹!  File baseDir = new File(baseDirName);  if (!baseDir.exists() || (!baseDir.isDirectory())) {  System.err.println("压缩失败! 根目录不存在: " + baseDirName);  return false;  }  // 得到这个 "压缩的根目录" 的绝对路径  String baseDirPath = baseDir.getAbsolutePath();  // 由这个 "目标 ZIP 文件" 文件名得到一个 压缩对象 ZipOutputStream  File targetFile = new File(targetFileName);  ZipOutputStream out = new ZipOutputStream(new FileOutputStream(   targetFile));  // 中文有乱码，引进下面的改造类  // CnZipOutputStream out = new CnZipOutputStream(new  // FileOutputStream(targetFile),encoding);  // 设置压缩编码Apache Ant有个包专门处理ZIP文件，可以指定文件名的编码方式。由此可以解决问题。例如：用  // org.apache.tools.zip.ZipOutputStream代替java.util.zip.ZipOutputStream。ZipOutputStream  // out = .....; out.setEncoding("GBK");  // out.setEncoding("GBK");//设置为GBK后在windows下就不会乱码了，如果要放到Linux或者Unix下就不要设置了  out.setEncoding(encoding);  // "*" 表示压缩包括根目录 baseDirName 在内的全部文件 到 targetFileName文件下  if (fileNames.equals("*")) {  AntZipUtil.dirToZip(baseDirPath, baseDir, out);  } else {  File[] files = new File[fileNames.length];  for (int i = 0; i < files.length; i++) {   // 根据 parent 抽象路径名和 child 路径名字符串创建一个新 File 实例。   files[i] = new File(baseDir, fileNames[i]);  }  if (files[0].isFile()) {   // 调用本类的一个静态方法 压缩一个文件   // CompressUtil.fileToZip(baseDirPath, file, out);   AntZipUtil.filesToZip(baseDirPath, files, out);  }  }  out.close();  // System.out.println("压缩成功! 目标文件名为: " + targetFileName);  flag = true; } catch (FileNotFoundException e) {  e.printStackTrace(); } catch (IOException e) {  e.printStackTrace(); } return flag; }  private static void fileToZip(String baseDirPath, File file,  ZipOutputStream out) throws IOException { // FileInputStream in = null; org.apache.tools.zip.ZipEntry entry = null; // 创建复制缓冲区 1024*4 = 4K byte[] buffer = new byte[1024 * 4]; int bytes_read = 0; if (file.isFile()) {  in = new FileInputStream(file);  // 根据 parent 路径名字符串和 child 路径名字符串创建一个新 File 实例  String zipFileName = getEntryName(baseDirPath, file);  entry = new org.apache.tools.zip.ZipEntry(zipFileName);  // "压缩文件" 对象加入 "要压缩的文件" 对象  out.putNextEntry(entry);  // 现在是把 "要压缩的文件" 对象中的内容写入到 "压缩文件" 对象  while ((bytes_read = in.read(buffer)) != -1) {  out.write(buffer, 0, bytes_read);  }  out.closeEntry();  in.close();  // System.out.println("添加文件" + file.getAbsolutePath()+ "被添加到 ZIP  // 文件中!"); } }  @SuppressWarnings("unused") private static void filesToZip(String baseDirPath, File[] files,  ZipOutputStream out) throws IOException { // 遍历所有的文件 一个一个地压缩 for (int i = 0; i < files.length; i++) {  File file = files[i];  if (file.isFile()) {  // 调用本类的一个静态方法 压缩一个文件  AntZipUtil.fileToZip(baseDirPath, file, out);  } else {    AntZipUtil.dirToZip(baseDirPath, file, out);  } } }  private static void dirToZip(String baseDirPath, File dir,  ZipOutputStream out) throws IOException { // 得到一个文件列表 (本目录下的所有文件对象集合) File[] files = dir.listFiles(); // 要是这个文件集合数组的长度为 0 , 也就证明了这是一个空的文件夹,虽然没有再循环遍历它的必要,但是也要把这个空文件夹也压缩到目标文件中去 if (files.length == 0) {  // 根据 parent 路径名字符串和 child 路径名字符串创建一个新 File 实例  String zipFileName = getEntryName(baseDirPath, dir);  org.apache.tools.zip.ZipEntry entry = new org.apache.tools.zip.ZipEntry(   zipFileName);  out.putNextEntry(entry);  out.closeEntry(); } else {  // 遍历所有的文件 一个一个地压缩  for (int i = 0; i < files.length; i++) {  File file = files[i];  if (file.isFile()) {   // 调用本类的一个静态方法 压缩一个文件   AntZipUtil.fileToZip(baseDirPath, file, out);  } else {      AntZipUtil.dirToZip(baseDirPath, file, out);  }  } } }  private static String getEntryName(String baseDirPath, File file) {  if (!baseDirPath.endsWith(File.separator)) {  baseDirPath += File.separator; } String filePath = file.getAbsolutePath();  if (file.isDirectory()) {  filePath += "/"; } int index = filePath.indexOf(baseDirPath); return filePath.substring(index + baseDirPath.length()); } // //////////////////////////解压缩////////////////////////////////////////  public static boolean unZip(String zipFileName, String outputDirectory) { boolean flag = false; try {  org.apache.tools.zip.ZipFile zipFile = new org.apache.tools.zip.ZipFile(   zipFileName);  java.util.Enumeration e = zipFile.getEntries();  org.apache.tools.zip.ZipEntry zipEntry = null;  createDirectory(outputDirectory, "");  while (e.hasMoreElements()) {  zipEntry = (org.apache.tools.zip.ZipEntry) e.nextElement();  // System.out.println("unziping " + zipEntry.getName());  if (zipEntry.isDirectory()) {   String name = zipEntry.getName();   name = name.substring(0, name.length() - 1);   File f = new File(outputDirectory + File.separator + name);   f.mkdir();   System.out.println("创建目录：" + outputDirectory    + File.separator + name);  } else {   String fileName = zipEntry.getName();   fileName = fileName.replace('\\', '/');   // System.out.println("测试文件1：" +fileName);   if (fileName.indexOf("/") != -1) {   createDirectory(outputDirectory, fileName.substring(0,    fileName.lastIndexOf("/")));   fileName = fileName.substring(    fileName.lastIndexOf("/") + 1, fileName     .length());   }   File f = new File(outputDirectory + File.separator    + zipEntry.getName());   f.createNewFile();   InputStream in = zipFile.getInputStream(zipEntry);   FileOutputStream out = new FileOutputStream(f);   byte[] by = new byte[1024];   int c;   while ((c = in.read(by)) != -1) {   out.write(by, 0, c);   }   out.close();   in.close();  }  flag = true;  } } catch (Exception ex) {  ex.printStackTrace(); } return flag; }  private static void createDirectory(String directory, String subDirectory) { String dir[]; File fl = new File(directory); try {  if (subDirectory == "" && fl.exists() != true)  fl.mkdir();  else if (subDirectory != "") {  dir = subDirectory.replace('\\', '/').split("/");  for (int i = 0; i < dir.length; i++) {   File subFile = new File(directory + File.separator + dir[i]);   if (subFile.exists() == false)   subFile.mkdir();   directory += File.separator + dir[i];  }  } } catch (Exception ex) {  System.out.println(ex.getMessage()); } } // ///////////////////////////////////// public static void main(String[] temp) { // 压缩 String baseDirName = "C:\\"; String[] fileNames = { "中文1.doc", "中文2.doc" }; String zipFileName = "c:\\中文.zip"; // 压缩多个指定的文件 到ZIP  System.out.println(AntZipUtil.zip(baseDirName, fileNames,zipFileName,"GBK")); //压缩一个文件夹 到ZIP String sourcePath = "c:\\test\\"; String zipFilePath = "c:\\中文2.zip"; AntZipUtil.zip(sourcePath, zipFilePath); //解压缩 //System.out.println(AntZipUtil.unZip("c:\\中文.zip", "c:\\中文")); }}