java加解文件zip

在网上找了一下，没有找到java解压rar文件，只找到了，zip文件，

下面是加压和加压的一个实例:

用到了一个ant.jar 里面的一个org.apache.tools.zip.*包

 

下面是代码：实例工程在附件上，希望对你们有帮助

文件夹是中文乱码未解决:

 

 

解压：

public class UnZip {
    static final int BUFFER = 2048;

    public static void main(String argv[]) {
        try {
            String fileName = "E:/myfiles.zip";
            String filePath = "E:/";
            ZipFile zipFile = new ZipFile(fileName);
            Enumeration emu = zipFile.entries();
            int i=0;
            while(emu.hasMoreElements()){
                ZipEntry entry = (ZipEntry)emu.nextElement();
                //会把目录作为一个file读出一次，所以只建立目录就可以，之下的文件还会被迭代到。
                if (entry.isDirectory())
                {
                    new File(filePath + entry.getName()).mkdirs();
                    continue;
                }
                BufferedInputStream bis = new BufferedInputStream(zipFile.getInputStream(entry));
                File file = new File(filePath + entry.getName());
                //加入这个的原因是zipfile读取文件是随机读取的，这就造成可能先读取一个文件
                //而这个文件所在的目录还没有出现过，所以要建出目录来。
                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();
        }
    }
}

 

加压

 

public class CompressBook {
    public CompressBook() {}

    /*
    * inputFileName 输入一个文件夹
    * zipFileName 输出一个压缩文件夹
    */
    public void zip(String inputFileName,String zipFileName) throws Exception {
        System.out.println(zipFileName);
        zip(zipFileName, new File(inputFileName));
    }

    private void zip(String zipFileName, File inputFile) throws Exception {
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
        zip(out, inputFile, "");
        System.out.println("zip done");
        out.close();
    }

    private void zip(ZipOutputStream out, File f, String base) throws Exception {
        if (f.isDirectory()) {
           File[] fl = f.listFiles();
           out.putNextEntry(new org.apache.tools.zip.ZipEntry(base + "/"));
           base = base.length() == 0 ? "" : base + "/";
           for (int i = 0; i < fl.length; i++) {
           zip(out, fl[i], base + fl[i].getName());
         }
        }else {
           out.putNextEntry(new org.apache.tools.zip.ZipEntry(base));
           FileInputStream in = new FileInputStream(f);
           int b;
           System.out.println(base);
           while ( (b = in.read()) != -1) {
            out.write(b);
         }
         in.close();
       }
    }

    public static void main(String [] temp){
        CompressBook book = new CompressBook();
        try {
           book.zip("E:/test/a","e:/test/test.zip");//你要压缩的文件夹
        }catch (Exception ex) {
           ex.printStackTrace();
       }
    }
}