使用zip对文件或文件夹进行压缩, 解压缩

使用zip对文件或文件夹进行压缩, 解压缩

Java代码







import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream;
import java.io.IOException; 
import java.util.zip.ZipEntry; 
import java.util.zip.ZipInputStream; 
import java.util.zip.ZipOutputStream;
 
/**

* 对文件或文件夹进行压缩和解压
*

*/ 
publicclass ZipUtil { 
    /**得到当前系统的分隔符*/ 
//  private static String separator = System.getProperty("file.separator"); 
 
    /**
     * 添加到压缩文件中
     * @param out
     * @param f
     * @param base
     * @throws Exception
     */ 
    privatevoid directoryZip(ZipOutputStream out, File f, String base)throws
Exception { 
        // 如果传入的是目录 
        if (f.isDirectory()) { 
            File[] fl = f.listFiles(); 
            // 创建压缩的子目录 
            out.putNextEntry(new ZipEntry(base +"/")); 
            if (base.length() ==0) { 

                base = ""; 
            } else { 
                base = base + "/"; 
            } 
            for (int i =0;
i < fl.length; i++) { 
                directoryZip(out, fl[i], base + fl[i].getName()); 

            } 
        } else { 
            // 把压缩文件加入rar中 
            out.putNextEntry(new ZipEntry(base)); 
            FileInputStream in = new FileInputStream(f); 
            byte[] bb =newbyte[10240]; 
            int aa =0; 

            while ((aa = in.read(bb)) != -1) { 
                out.write(bb, 0, aa); 
            } 
            in.close(); 
        } 
    } 
 
    /**
     * 压缩文件
     *
     * @param zos
     * @param file
     * @throws Exception
     */ 
    privatevoid fileZip(ZipOutputStream zos,
e27a
File file)throws
Exception { 
        if (file.isFile()) { 
            zos.putNextEntry(new ZipEntry(file.getName())); 
            FileInputStream fis = new FileInputStream(file); 
            byte[] bb =newbyte[10240]; 
            int aa =0; 

            while ((aa = fis.read(bb)) != -1) { 
                zos.write(bb, 0, aa); 
            } 
            fis.close(); 
            System.out.println(file.getName()); 
        } else { 
            directoryZip(zos, file, ""); 
        } 
    } 
 
    /**
     * 解压缩文件
     *
     * @param zis
     * @param file
     * @throws Exception
     */ 
    privatevoid fileUnZip(ZipInputStream zis, File file)throws
Exception { 
        ZipEntry zip = zis.getNextEntry(); 
        if (zip ==null) 
            return; 
        String name = zip.getName(); 
        File f = new File(file.getAbsolutePath() +"/" + name); 
        if (zip.isDirectory()) { 
            f.mkdirs(); 
            fileUnZip(zis, file); 
        } else { 
            f.createNewFile(); 
            FileOutputStream fos = new FileOutputStream(f); 
            byte b[] =newbyte[10240]; 
            int aa =0; 

            while ((aa = zis.read(b)) != -1) { 
                fos.write(b, 0, aa); 
            } 
            fos.close(); 
            fileUnZip(zis, file); 
        } 
    } 
     
    /**
     * 根据filePath创建相应的目录
     * @param filePath
     * @return
     * @throws IOException
     */ 
    private File mkdirFiles(String filePath)throws IOException{ 
        File file = new File(filePath); 
        if(!file.getParentFile().exists()){ 
            file.getParentFile().mkdirs(); 
        } 
        file.createNewFile(); 
         
        return file; 
    } 
 
    /**
     * 对zipBeforeFile目录下的文件压缩，保存为指定的文件zipAfterFile
     *
     * @param zipBeforeFile     压缩之前的文件
     * @param zipAfterFile      压缩之后的文件
     */ 
    publicvoid zip(String zipBeforeFile, String zipAfterFile) { 
        try { 
             
            ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(mkdirFiles(zipAfterFile))); 
            fileZip(zos, new File(zipBeforeFile)); 
            zos.close(); 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
    } 
 
    /**
     * 解压缩文件unZipBeforeFile保存在unZipAfterFile目录下
     *
     * @param unZipBeforeFile       解压之前的文件
     * @param unZipAfterFile        解压之后的文件
     */ 
    publicvoid unZip(String unZipBeforeFile, String unZipAfterFile)
{ 
        try { 
            ZipInputStream zis = new ZipInputStream(new FileInputStream(unZipBeforeFile)); 
            File f = new File(unZipAfterFile); 
            f.mkdirs(); 
            fileUnZip(zis, f); 
            zis.close(); 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
    } 
}