Java使用文件夹FileNotFound异常解压缩压缩存档

Question

我试图在java中解压缩包含文件夹以及存档内的文件的存档.问题是,只要它到达文件夹并尝试解压缩它们就会抛出FNF异常.我的解压缩代码如下:

 private void unZipUpdate(String pathToUpdateZip, String destinationPath){
       byte[] byteBuffer = new byte[1024];

       try{
           ZipInputStream inZip = new ZipInputStream(new FileInputStream(pathToUpdateZip));
           ZipEntry inZipEntry = inZip.getNextEntry();
           while(inZipEntry != null){
               String fileName = inZipEntry.getName();
               File unZippedFile = new File(destinationPath + File.separator + fileName);


               System.out.println("Unzipping: " + unZippedFile.getAbsoluteFile());
               new File(unZippedFile.getParent()).mkdirs();


               FileOutputStream unZippedFileOutputStream = new FileOutputStream(unZippedFile);
               int length;
               while((length = inZip.read(byteBuffer)) > 0){
                   unZippedFileOutputStream.write(byteBuffer,0,length);
               }
               unZippedFileOutputStream.close();
               inZipEntry = inZip.getNextEntry();
           }
           inZipEntry.clone();
           inZip.close();
           System.out.println("Finished Unzipping");
       }catch(IOException e){
           e.printStackTrace();
       }
    }

我以为我有处理过的压缩文件夹

new File(unZippedFile.getParent()).mkdirs();

但这似乎并未解决问题.我在这里错过了什么？

堆栈跟踪:

Unzipping: D:\UnzipTest\aspell
java.io.FileNotFoundException: D:\UnzipTest\aspell\american-w-accents.alias (The system cannot find the path specified)
    at java.io.FileOutputStream.open(Native Method)
Unzipping: D:\UnzipTest\aspell\american-w-accents.alias
    at java.io.FileOutputStream.<init>(FileOutputStream.java:221)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:171)
    at shopupdater.ShopUpdater.unZipUpdate(ShopUpdater.java:47)
    at shopupdater.ShopUpdater.unZipUpdate(ShopUpdater.java:33)
    at shopupdater.ShopUpdater.main(ShopUpdater.java:67)

"aspell"是存档中的文件夹.

我尝试了Daniel的添加建议

unZippedFile.createNewFile();

后

new File(UnzippedFile.getParent()).mkdirs();

这引起了一个不同的例外:

Unzipping: D:\UnzipTest\aspell
Unzipping: D:\UnzipTest\aspell\american-w-accents.alias
java.io.FileNotFoundException: D:\UnzipTest\aspell\american-w-accents.alias (The system cannot find the path specified)
    at java.io.FileOutputStream.open(Native Method)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:221)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:171)
    at shopupdater.ShopUpdater.unZipUpdate(ShopUpdater.java:56)
    at shopupdater.ShopUpdater.unZipUpdate(ShopUpdater.java:33)
    at shopupdater.ShopUpdater.main(ShopUpdater.java:76)

Answer 1

试试这个代码,它适用于我的机器(ubuntu)

private static void unZipUpdate(String pathToUpdateZip, String destinationPath){
       byte[] byteBuffer = new byte[1024];

       try{
           ZipInputStream inZip = new ZipInputStream(new FileInputStream(pathToUpdateZip));
           ZipEntry inZipEntry = inZip.getNextEntry();
           while(inZipEntry != null){
               String fileName = inZipEntry.getName();
               File unZippedFile = new File(destinationPath + File.separator + fileName);
               System.out.println("Unzipping: " + unZippedFile.getAbsoluteFile());
               if (inZipEntry.isDirectory()){
                   unZippedFile.mkdirs();
               }else{
                   new File(unZippedFile.getParent()).mkdirs();
                   unZippedFile.createNewFile();
                   FileOutputStream unZippedFileOutputStream = new FileOutputStream(unZippedFile);
                   int length;
                   while((length = inZip.read(byteBuffer)) > 0){
                       unZippedFileOutputStream.write(byteBuffer,0,length);
                   }
                   unZippedFileOutputStream.close();                       
               }
               inZipEntry = inZip.getNextEntry(); 
           }
           //inZipEntry.close();
           inZip.close();
           System.out.println("Finished Unzipping");
       }catch(IOException e){
           e.printStackTrace();
       }
    }