采用org.apache.tools.zip来进行zip包的解压缩，支持目录嵌套和中文名

一篇关于zip包的解压缩，支持目录嵌套和文件目录的中文名，也算补上上次的只压不解，（注意先倒入ant.jar这个包，同时要确认ant.jar包中有org.apache.tools.zip）：

import java.io.*;
public class DeCompressBook {
    public DeCompressBook() {
    }

private 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 void unZip(String zipFileName, String outputDirectory) throws Exception {
    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();
        }
      }
       }
    catch (Exception ex) {
      System.out.println(ex.getMessage());
    }
        
    }
}

评论

2 楼 飞天奔月 2011-07-15  

if (zipEntry.isDirectory()) { 
           //这段都可以不要，因为每次都貌似从最底层开始遍历的 
           loadFile.mkdirs(); 
       }
这句是要的

moshalanye 写道

  你写复杂了！

     static void unZip(File file,String loadFold) throws IOException {

        byte b[] = new byte[1024];
        int length;

        org.apache.tools.zip.ZipFile zipFile = new org.apache.tools.zip.ZipFile(file);
        java.util.Enumeration enumeration = zipFile.getEntries();
        org.apache.tools.zip.ZipEntry zipEntry = null;

        while (enumeration.hasMoreElements()) {
            zipEntry = (org.apache.tools.zip.ZipEntry) enumeration.nextElement();
            File loadFile = new File(loadFold+zipEntry.getName());

            if (zipEntry.isDirectory()) {
                //这段都可以不要，因为每次都貌似从最底层开始遍历的
                loadFile.mkdirs();
            } else {
                if (!loadFile.getParentFile().exists())
                    loadFile.getParentFile().mkdirs();

                OutputStream outputStream = new FileOutputStream(loadFile);
                InputStream inputStream = zipFile.getInputStream(zipEntry);


                while ((length = inputStream.read(b)) > 0)        
                    outputStream.write(b, 0, length);        

            }
 
        }
    }

1 楼 moshalanye 2009-01-07  

  你写复杂了！

     static void unZip(File file,String loadFold) throws IOException {

        byte b[] = new byte[1024];
        int length;

        org.apache.tools.zip.ZipFile zipFile = new org.apache.tools.zip.ZipFile(file);
        java.util.Enumeration enumeration = zipFile.getEntries();
        org.apache.tools.zip.ZipEntry zipEntry = null;

        while (enumeration.hasMoreElements()) {
            zipEntry = (org.apache.tools.zip.ZipEntry) enumeration.nextElement();
            File loadFile = new File(loadFold+zipEntry.getName());

            if (zipEntry.isDirectory()) {
                //这段都可以不要，因为每次都貌似从最底层开始遍历的
                loadFile.mkdirs();
            } else {
                if (!loadFile.getParentFile().exists())
                    loadFile.getParentFile().mkdirs();

                OutputStream outputStream = new FileOutputStream(loadFile);
                InputStream inputStream = zipFile.getInputStream(zipEntry);


                while ((length = inputStream.read(b)) > 0)        
                    outputStream.write(b, 0, length);        

            }
 
        }
    }