2022-04-12. zip文件压缩与解压

zip 压缩
/**

• 压缩文件-由于out要在递归调用外,所以封装一个方法用来
• 调用ZipFiles(ZipOutputStream out,String path,File... srcFiles)
• @param zip
• @param path
• @param srcFiles
• @throws IOException
• @author isea533
  /
  public static void ZipFiles(File zip,String path,File... srcFiles) throws IOException{
  ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zip));
  ZipTest.ZipFiles(out,path,srcFiles);
  out.close();
  System.out.println("*****************压缩完毕*******************");
  }
  /*
• 压缩文件-File
• @param zipFile zip文件
• @param srcFiles 被压缩源文件
• @author isea533
  /
  public static void ZipFiles(ZipOutputStream out,String path,File... srcFiles){
  path = path.replaceAll("\", "/");
  if(!path.endsWith("/")){
  path+="/";
  }
  byte[] buf = new byte[1024];
  try {
  for(int i=0;i<srcFiles.length;i++){
  if(srcFiles[i].isDirectory()){
  File[] files = srcFiles[i].listFiles();
  String srcPath = srcFiles[i].getName();
  srcPath = srcPath.replaceAll("\*", "/");
  if(!srcPath.endsWith("/")){
  srcPath+="/";
  }
  out.putNextEntry(new ZipEntry(path+srcPath));
  ZipFiles(out,path+srcPath,files);
  }
  else{
  FileInputStream in = new FileInputStream(srcFiles[i]);
  System.out.println(path + srcFiles[i].getName());
  out.putNextEntry(new ZipEntry(path + srcFiles[i].getName()));
  int len;
  while((len=in.read(buf))>0){
  out.write(buf,0,len);
  }
  out.closeEntry();
  in.close();
  }
  }
  } catch (Exception e) {
  e.printStackTrace();
  }
  }

zip 解压

/**

• 解压到指定目录
• @param zipPath
• @param descDir
• @author isea533
  /
  public static void unZipFiles(String zipPath,String descDir)throws IOException{
  unZipFiles(new File(zipPath), descDir);
  }
  /*
• 解压文件到指定目录
• @param zipFile
• @param descDir
• @author isea533
  /
  @SuppressWarnings("rawtypes")
  public static void unZipFiles(File zipFile,String descDir)throws IOException{
  File pathFile = new File(descDir);
  if(!pathFile.exists()){
  pathFile.mkdirs();
  }
  ZipFile zip = new ZipFile(zipFile);
  for(Enumeration entries = zip.getEntries();entries.hasMoreElements();){
  ZipEntry entry = (ZipEntry)entries.nextElement();
  String zipEntryName = entry.getName();
  InputStream in = zip.getInputStream(entry);
  String outPath = (descDir+zipEntryName).replaceAll("\", "/");;
  //判断路径是否存在,不存在则创建文件路径
  File file = new File(outPath.substring(0, outPath.lastIndexOf('/')));
  if(!file.exists()){
  file.mkdirs();
  }
  //判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压
  if(new File(outPath).isDirectory()){
  continue;
  }
  //输出文件路径信息
  System.out.println(outPath);

OutputStream out = new FileOutputStream(outPath);
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("******************解压完毕********************");
}

测试方法
public static void main(String[] args) throws IOException {
/**

• 压缩文件
  */
  File[] files = new File[]{new File("d:/English"),new File("d:/发放数据.xls"),new File("d:/中文名称.xls")};
  File zip = new File("d:/压缩.zip");
  ZipFiles(zip,"abc",files);

/**

• 解压文件
  */
  File zipFile = new File("d:/压缩.zip");
  String path = "d:/zipfile/";
  unZipFiles(zipFile, path);
  }