ZipEntry 类，zip的压缩与解压

ZipEntry 类是java.util.zip包下的一个类，

ZipEntry 类用于表示 ZIP 文件条目。

利用这个类压缩和解压zip文件

具体压缩的例子如下： import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream;

/**

压缩程序 @author young

*/ public class SingleFileZip { public static void main(String[] args) { File file = new File(“e:/test.txt”); FileInputStream fis = null; ZipOutputStream zos = null; try { fis = new FileInputStream(file); zos = new ZipOutputStream(new FileOutputStream(“e:/my.zip”));

// 创建压缩文件中的条目
        ZipEntry entry = new ZipEntry(file.getName());
        // 将创建好的条目加入到压缩文件中
        zos.putNextEntry(entry);
        // 写入当前条目所对应的具体内容
        byte[] buff = new byte[1024];
        int len = 0;
        while ((len = fis.read(buff)) != -1) {
            zos.write(buff, 0, len);
        }
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } finally {
        try {
            fis.close();
            zos.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

}

解压例子如下：

import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; import java.util.zip.ZipInputStream;

/**

解压程序 @author young

*/

public class SingleFileUnZip { public static void main(String[] args) {

FileOutputStream fos = null;
    ZipInputStream zis = null;
    InputStream is = null;

    try {
        ZipFile zf = new ZipFile("e:/my.zip");
        zis = new ZipInputStream(new FileInputStream("e:/my.zip"));
        fos = new FileOutputStream("e:/unzip.txt");

        // 从压缩文件中获取一个条目
        ZipEntry entry = zis.getNextEntry();
        // 获得该条目对象的数据流
        is = zf.getInputStream(entry);
        byte[] buff = new byte[1024];
        int len = 0;
        while ((len = is.read(buff)) != -1) {
            fos.write(buff, 0, len);
        }
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } finally {
        try {
            is.close();
            zis.close();
            fos.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

}