java 压缩解压类

java ziputil

   
     

    
      
    
      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.ArrayList;

    
      import
    
       java.util.Enumeration;

    
      import
    
       java.util.zip.ZipEntry;

    
      import
    
       java.util.zip.ZipFile;

    
      import
    
       java.util.zip.ZipOutputStream;


    
      public
    
       
    
      class
    
       ZipUtil {
 
    
      static
    
       
    
      final
    
       
    
      int
    
       BUFFER 
    
      =
    
       
    
      2048
    
      ;

 
    
      public
    
       
    
      static
    
       
    
      void
    
       zip(String zipFileName, String sourcePath) {
 
    
      try
    
       {
 BufferedInputStream origin 
    
      =
    
       
    
      null
    
      ;
 FileOutputStream dest 
    
      =
    
       
    
      new
    
       FileOutputStream(zipFileName);
 ZipOutputStream out 
    
      =
    
       
    
      new
    
       ZipOutputStream(
    
      new
    
       BufferedOutputStream(
 dest));
 
    
      byte
    
       data[] 
    
      =
    
       
    
      new
    
       
    
      byte
    
      [BUFFER];
 File f 
    
      =
    
       
    
      new
    
       File(sourcePath);
 File files[] 
    
      =
    
       f.listFiles();
 
    
      for
    
       (
    
      int
    
       i 
    
      =
    
       
    
      0
    
      ; i 
    
      <
    
       files.length; i
    
      ++
    
      ) {
 FileInputStream fi 
    
      =
    
       
    
      new
    
       FileInputStream(files[i]);
 origin 
    
      =
    
       
    
      new
    
       BufferedInputStream(fi, BUFFER);
 ZipEntry entry 
    
      =
    
       
    
      new
    
       ZipEntry(files[i].getName());
 out.putNextEntry(entry);
 
    
      int
    
       count;
 
    
      while
    
       ((count 
    
      =
    
       origin.read(data, 
    
      0
    
      , BUFFER)) 
    
      !=
    
       
    
      -
    
      1
    
      ) {
 out.write(data, 
    
      0
    
      , count);
 }
 origin.close();
 }
 out.close();
 } 
    
      catch
    
       (Exception e) {
 e.printStackTrace();
 }
 }

 
    
      public
    
       
    
      static
    
       
    
      void
    
       unzip(String zipFileName, String targetPath) {
 
    
      try
    
       {
 ZipFile zipFile 
    
      =
    
       
    
      new
    
       ZipFile(zipFileName);
 Enumeration emu 
    
      =
    
       zipFile.entries();
 
    
      int
    
       i 
    
      =
    
       
    
      0
    
      ;
 
    
      while
    
       (emu.hasMoreElements()) {
 ZipEntry entry 
    
      =
    
       (ZipEntry) emu.nextElement();

 
    
      if
    
       (entry.isDirectory()) {
 
    
      new
    
       File(targetPath 
    
      +
    
       entry.getName()).mkdirs();
 
    
      continue
    
      ;
 }
 BufferedInputStream bis 
    
      =
    
       
    
      new
    
       BufferedInputStream(zipFile
 .getInputStream(entry));
 File file 
    
      =
    
       
    
      new
    
       File(targetPath 
    
      +
    
      "
    
      /
    
      "
    
      +
    
       entry.getName());

 File parent 
    
      =
    
       file.getParentFile();
 
    
      if
    
       (parent 
    
      !=
    
       
    
      null
    
       
    
      &&
    
       (
    
      !
    
      parent.exists())) {
 parent.mkdirs();
 }
 FileOutputStream fos 
    
      =
    
       
    
      new
    
       FileOutputStream(file);
 BufferedOutputStream bos 
    
      =
    
       
    
      new
    
       BufferedOutputStream(fos, BUFFER);
 
    
      int
    
       count;
 
    
      byte
    
       data[] 
    
      =
    
       
    
      new
    
       
    
      byte
    
      [BUFFER];
 
    
      while
    
       ((count 
    
      =
    
       bis.read(data, 
    
      0
    
      , BUFFER)) 
    
      !=
    
       
    
      -
    
      1
    
      ) {
 bos.write(data, 
    
      0
    
      , count);
 }
 bos.flush();
 bos.close();
 bis.close();
 }
 zipFile.close();
 } 
    
      catch
    
       (Exception e) {
 e.printStackTrace();
 }
 }

 
    
      /**
    
      
 * 将一个文件夹下的所有zip文件按照原目录层级全部解压
 * 
    
      @param
    
       dir 原文件夹
 
    
      */
    
      
 
    
      public
    
       
    
      static
    
       
    
      void
    
       unzipDir(String dir) {
 ArrayList list
    
      =
    
      FileUtil.getFileList(dir,
    
      "
    
      zip
    
      "
    
      );
 
    
      for
    
       (Object object : list) {
 String fileName
    
      =
    
      object.toString();
 System.out.println(fileName);
 String unzipDir
    
      =
    
      FileUtil.getFilePathWithoutSuffix(fileName);
 
    
      if
    
      (
    
      !
    
      (
    
      new
    
       File(unzipDir).isDirectory())) {
 
    
      new
    
       File(unzipDir).mkdir();
 }
 ZipUtil.unzip(fileName,unzipDir);
 }
 }
 
 
    
      public
    
       
    
      static
    
       
    
      void
    
       main(String argv[]) {
 unzipDir(
    
      "
    
      e:/temp
    
      "
    
      );
 }
}