java压缩加密

1。首先下载winzipaes.jar(http://code.google.com/p/winzipaes/)

 ,bcprov-jdk16-145.jar,bcmail-jdk16-145.jar(http://www.bouncycastle.org/latest_releases.html)这三个jar

 

2.

public class ZipUtil {

 public Boolean compress(String inFile, String outFile, String key) throws Exception {

  Boolean flag = false;
  ArrayList<String> fileList = new ArrayList<String>();
  fileList.add(inFile);
  compress(fileList, outFile, key);
  flag = true;

  return flag;
 }

 public Boolean compress(List<String> inFiles, String outFile, String key) throws Exception {
  Boolean flag = false;
  String tempFile = outFile;
  if (null != key && !"".equals(key)) {
   tempFile = tempFile + "temp";
  }
  ArrayList<String> filePathList = new ArrayList<String>();
  ArrayList<String> fileNameList = new ArrayList<String>();
  if (inFiles != null && inFiles.size() > 0) {
   File file = null;
   for (String fileStr : inFiles) {
    file = new File(fileStr);
    filePathList.add(file.getAbsolutePath());
    fileNameList.add(file.getName());
   }
   makeZip(filePathList, fileNameList, tempFile);

   if (null != key && !"".equals(key)) {
    File temp = new File(tempFile);
    AesZipFileEncrypter enc = new AesZipFileEncrypter(outFile);
    enc.addAll(temp, key);
    enc.close();
    temp.delete();
   }
  }
  flag = true;
  return flag;
 }

 public Boolean compress(String inDir, String outFile, String key, Boolean ifSubDir) throws Exception {
  System.out.println("--inDir--" + inDir);
  System.out.println("--outFile--" + outFile);
  Boolean flag = false;

  String tempFile = outFile;
  if (null != key && !"".equals(key)) {
   tempFile = tempFile + "temp";
  }
  makeZip(new File(inDir), tempFile, ifSubDir);
  if (null != key && !"".equals(key)) {
   File temp = new File(tempFile);
   AesZipFileEncrypter enc = new AesZipFileEncrypter(outFile);
   enc.addAll(temp, key);
   enc.close();
   temp.delete();
  }
  flag = true;
  return flag;
 }

 public Boolean uncompress(String inFile, String outDir, String key, Boolean ifSubDir) throws Exception {

  boolean flag = false;

  if (key == null || "".equals(key)) {
   unZip(inFile, new File(outDir));
  } else {
   AesZipFileDecrypter zipFile = new AesZipFileDecrypter(new File(inFile));
   for (ExtZipEntry entry : zipFile.getEntryList()) {
    if (!ifSubDir) {
     String filename = entry.getName();
     String[] strArray = filename.split(File.separator + File.separator);
     if (strArray != null && strArray.length == 1) {
      zipFile.extractEntry(entry, new File(outDir + File.separator + entry.getName()), key);
     }
    } else {
     zipFile.extractEntry(entry, new File(outDir + File.separator + entry.getName()), key);
    }
   }
  }
  flag = true;
  return flag;
 }

 private void unZip(String zipFilePath, File toUnzipFold) throws IOException {
  if (!toUnzipFold.exists()) {
   toUnzipFold.mkdirs();
  }
  ZipFile zfile = new ZipFile(zipFilePath);
  // zList包含了所有的文件夹、目录信息
  Enumeration zList = zfile.entries();
  byte[] buf = new byte[1024];
  File tmpfile = null;
  File tmpfold = null;
  while (zList.hasMoreElements()) {
   ZipEntry ze = (ZipEntry) zList.nextElement();
   tmpfile = new File(toUnzipFold.getAbsolutePath() + File.separator + ze.getName());
   if (ze.isDirectory()) {
    continue;
   } else {
    tmpfold = tmpfile.getParentFile();
    if (!tmpfold.exists()) {
     tmpfold.mkdirs();
    }
    OutputStream os = new BufferedOutputStream(new FileOutputStream(tmpfile.getAbsolutePath()));
    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();
   }
  }
 }

 private void makeZip(File fold, String outputZipFileName) throws IOException {
  makeZip(fold, outputZipFileName, false);
 }

 private void makeZip(File fold, String outputZipFileName, boolean recursive) throws IOException {
  if (fold.exists()) {
   ArrayList<File> fileList = new ArrayList<File>();
   listAllFile(fold, fileList, recursive);
   ArrayList<String> filePathList = new ArrayList<String>();
   ArrayList<String> fileNameList = new ArrayList<String>();
   String tmpStr = null;
   int basLen = fold.getAbsolutePath().length();
   for (File f : fileList) {
    tmpStr = f.getAbsolutePath();
    filePathList.add(tmpStr);
    fileNameList.add(tmpStr.substring(basLen + 1, tmpStr.length()));
   }
   makeZip(filePathList, fileNameList, outputZipFileName);
  }
 }

 private void listAllFile(File fold, ArrayList<File> fileList, boolean recursive) {
  File[] files = fold.listFiles();
  for (File f : files) {
   if (recursive && f.isDirectory()) {
    listAllFile(f, fileList, recursive);
   } else if (!f.isDirectory()) {
    fileList.add(f);
   }
  }
 }

 private void makeZip(ArrayList<String> filePathList, ArrayList<String> fileNameList, String outputZipFileName)
   throws IOException {
  byte[] buf = new byte[1024];
  File outputZipFile = new File(outputZipFileName);
  File outputZipParentFile = outputZipFile.getParentFile();
  if (!outputZipParentFile.exists()) {
   outputZipParentFile.mkdirs();
  }

  ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outputZipFile));
  int len = -1;
  for (int i = 0; i < filePathList.size(); i++) {
   if (filePathList.get(i) != null) {
    FileInputStream in = new FileInputStream(filePathList.get(i));
    out.putNextEntry(new ZipEntry(fileNameList.get(i)));
    while ((len = in.read(buf)) > 0) {
     out.write(buf, 0, len);
    }
    out.closeEntry();
    in.close();
   }
  }
  out.close();
 }

 public static void main(String args[]) throws Exception {
  ZipUtil z = new ZipUtil();
  // 压缩
  z.compress("c:/a.txt", "c:/b.zip", "123");
  z.uncompress("c:/b.zip", "E:/", "123", true);
  System.out.println("compress ok----------------------------------");
 }
}