使用org.apache.tools.zip实现zip压缩和解压

た入场券 2022-08-26 00:43 305阅读 0赞

import java.io.\*;   
import org.apache.tools.zip.\*;   
import java.util.Enumeration;   
/\*\*   
\*功能:zip压缩、解压(支持中文文件名)   
\*说明:本程序通过使用Apache Ant里提供的zip工具org.apache.tools.zip实现了zip压缩和解压功能.   
\*   解决了由于java.util.zip包不支持汉字的问题。   
\*   使用java.util.zip包时,当zip文件中有名字为中文的文件时,   
\*   就会出现异常:"Exception  in thread "main " java.lang.IllegalArgumentException    
\*               at   java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:285)   
\*注意:   
\*   1、使用时把ant.jar放到classpath中,程序中使用import org.apache.tools.zip.\*;   
\*   2、Apache Ant 下载地址:\[url\]http://ant.apache.org/\[/url\]   
\*   3、Ant ZIP API:\[url\]http://www.jajakarta.org/ant/ant-1.6.1/docs/mix/manual/api/org/apache/tools/zip/\[/url\]   
\*   4、本程序使用Ant 1.7.1 中的ant.jar   
\*   
\*仅供编程学习参考.   
\*   
\*@author Winty   
\*@date   2008-8-3   
\*@Usage:   
\*   压缩:java AntZip -zip "directoryName"   
\*   解压:java AntZip -unzip "fileName.zip"   
\*/   
  
public class AntZip\{   
    private ZipFile         zipFile;   
    private ZipOutputStream zipOut;     //压缩Zip   
    private ZipEntry        zipEntry;   
    private static int      bufSize;    //size of bytes   
    private byte\[\]          buf;   
    private int             readedBytes;   
       
    public AntZip()\{   
        this(512);   
    \}   
  
    public AntZip(int bufSize)\{   
        this.bufSize = bufSize;   
        this.buf = new byte\[this.bufSize\];   
    \}   
       
    //压缩文件夹内的文件   
    public void doZip(String zipDirectory)\{ //zipDirectoryPath:需要压缩的文件夹名   
        File file;   
        File zipDir;   
  
        zipDir = new File(zipDirectory);   
        String zipFileName = zipDir.getName() + ".zip";//压缩后生成的zip文件名   
  
        try\{   
            this.zipOut = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFileName)));   
            handleDir(zipDir , this.zipOut);   
            this.zipOut.close();   
        \}catch(IOException ioe)\{   
            ioe.printStackTrace();   
        \}   
    \}   
  
    //由doZip调用,递归完成目录文件读取   
    private void handleDir(File dir , ZipOutputStream zipOut)throws IOException\{   
        FileInputStream fileIn;   
        File\[\] files;   
  
        files = dir.listFiles();   
       
        if(files.length == 0)\{ //如果目录为空,则单独创建之.   
            //ZipEntry的isDirectory()方法中,目录以"/"结尾.   
            this.zipOut.putNextEntry(new ZipEntry(dir.toString() + "/"));   
            this.zipOut.closeEntry();   
        \}   
        else\{ //如果目录不为空,则分别处理目录和文件.   
            for(File fileName : files)\{   
                //System.out.println(fileName);   
  
                if(fileName.isDirectory())\{   
                    handleDir(fileName , this.zipOut);   
                \}   
                else\{   
                    fileIn = new FileInputStream(fileName);   
                    this.zipOut.putNextEntry(new ZipEntry(fileName.toString()));   
  
                    while((this.readedBytes = fileIn.read(this.buf))>0)\{   
                        this.zipOut.write(this.buf , 0 , this.readedBytes);   
                    \}   
  
                    this.zipOut.closeEntry();   
                \}   
            \}   
        \}   
    \}   
  
    //解压指定zip文件   
    public void unZip(String unZipfileName)\{ //unZipfileName需要解压的zip文件名   
        FileOutputStream fileOut;   
        File file;   
        InputStream inputStream;   
  
        try\{   
            this.zipFile = new ZipFile(unZipfileName);   
  
            for(Enumeration entries = this.zipFile.getEntries(); entries.hasMoreElements();)\{   
                ZipEntry entry = (ZipEntry)entries.nextElement();   
                file = new File(entry.getName());   
  
                if(entry.isDirectory())\{   
                    file.mkdirs();   
                \}   
                else\{   
                    //如果指定文件的目录不存在,则创建之.   
                    File parent = file.getParentFile();   
                    if(!parent.exists())\{   
                        parent.mkdirs();   
                    \}   
  
                    inputStream = zipFile.getInputStream(entry);   
  
                    fileOut = new FileOutputStream(file);   
                    while(( this.readedBytes = inputStream.read(this.buf) ) > 0)\{   
                        fileOut.write(this.buf , 0 , this.readedBytes );   
                    \}   
                    fileOut.close();   
  
                    inputStream.close();   
                \}      
            \}   
            this.zipFile.close();   
        \}catch(IOException ioe)\{   
            ioe.printStackTrace();   
        \}   
    \}   
  
    //设置缓冲区大小   
    public void setBufSize(int bufSize)\{   
        this.bufSize = bufSize;   
    \}   
  
    //测试AntZip类   
    public static void main(String\[\] args)throws Exception\{   
        if(args.length==2)\{   
            String name = args\[1\];   
            AntZip zip = new AntZip();   
  
            if(args\[0\].equals("-zip"))   
                zip.doZip(name);   
            else if(args\[0\].equals("-unzip"))   
                zip.unZip(name);   
        \}   
        else\{   
            System.out.println("Usage:");   
            System.out.println("压缩:java AntZip -zip directoryName");   
            System.out.println("解压:java AntZip -unzip fileName.zip");   
            throw new Exception("Arguments error!");   
        \}   
    \}   
\}