如何閱讀壓縮文件的內容並保存文件

Question

我希望遞歸讀取壓縮文件的內容並將所有找到的文件保存到我的硬盤驅動器。

我讀的zip文件是這樣的：

def zipFile = new java.util.zip.ZipFile(new File('/Users/birdy/test.zip')) 

zipFile.entries().findAll { !it.directory }.each { 
    def is = zipFile.getInputStream(it) 
    //how do i store this stream to a file? 
} 

如果一個zip文件有下列文件：

folder1/test1.txt 
folder2/test2.jpg 

的話，我希望存儲test1.txt和test2.jpg我HD

Answer 1

這裏你去：

import java.util.zip.* 

def zipIn = new File('lol.zip') 
def zip = new ZipFile(zipIn) 

zip.entries().findAll { !it.directory }.each { e -> 
    (e.name as File).with{ f -> 
     f.parentFile?.mkdirs() 
     f.withOutputStream { w -> 
      w << zip.getInputStream(e) 
     } 
    } 
} 

一切都清楚了嗎？

Answer 2

Java代碼

import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.util.List; 
import java.util.zip.ZipEntry; 
import java.util.zip.ZipInputStream; 

public class UnZip 
{ 
    List<String> fileList; 
    private static final String INPUT_ZIP_FILE = "C:\\MyFile.zip"; 
    private static final String OUTPUT_FOLDER = "C:\\outputzip"; 

    public static void main(String[] args) 
    { 
     UnZip unZip = new UnZip(); 
     unZip.unZipIt(INPUT_ZIP_FILE,OUTPUT_FOLDER); 
    } 

    /** 
    * Unzip it 
    * @param zipFile input zip file 
    * @param output zip file output folder 
    */ 
    public void unZipIt(String zipFile, String outputFolder){ 

    byte[] buffer = new byte[1024]; 

    try{ 

     //create output directory is not exists 
     File folder = new File(OUTPUT_FOLDER); 
     if(!folder.exists()){ 
      folder.mkdir(); 
     } 

     //get the zip file content 
     ZipInputStream zis = 
      new ZipInputStream(new FileInputStream(zipFile)); 
     //get the zipped file list entry 
     ZipEntry ze = zis.getNextEntry(); 

     while(ze!=null){ 

      String fileName = ze.getName(); 
      File newFile = new File(outputFolder + File.separator + fileName); 

      System.out.println("file unzip : "+ newFile.getAbsoluteFile()); 

      //create all non exists folders 
      //else you will hit FileNotFoundException for compressed folder 
      new File(newFile.getParent()).mkdirs(); 

      FileOutputStream fos = new FileOutputStream(newFile);    

      int len; 
      while ((len = zis.read(buffer)) > 0) { 
      fos.write(buffer, 0, len); 
      } 

      fos.close(); 
      ze = zis.getNextEntry(); 
     } 

     zis.closeEntry(); 
     zis.close(); 

     System.out.println("Done"); 

    }catch(IOException ex){ 
     ex.printStackTrace(); 
    } 
    }  
}