如何從ZIP文件讀取文件到Java內存？

Question

我從SUN站點（http://java.sun.com/developer/technicalArticles/Programming/compression/）找到了示例，但它返回BufferedOutputStream。但我想將ZipEntry文件作爲InputStream，然後處理下一個文件。那可能嗎？我的程序無法訪問硬盤，因此甚至暫時不能保存文件。

import java.io.*; 
import java.util.zip.*; 

public class UnZip { 
    final int BUFFER = 2048; 
    public static void main (String argv[]) { 
     try { 
     BufferedOutputStream dest = null; 
     FileInputStream fis = new 
     FileInputStream(argv[0]); 
     ZipInputStream zis = new 
     ZipInputStream(new BufferedInputStream(fis)); 
     ZipEntry entry; 
     while((entry = zis.getNextEntry()) != null) { 
      System.out.println("Extracting: " +entry); 
      int count; 
      byte data[] = new byte[BUFFER]; 
      // write the files to the disk 
      FileOutputStream fos = new 
      FileOutputStream(entry.getName()); 
      dest = new 
       BufferedOutputStream(fos, BUFFER); 
      while ((count = zis.read(data, 0, BUFFER)) 
       != -1) { 
       dest.write(data, 0, count); 
      } 
      dest.flush(); 
      dest.close(); 
     } 
     zis.close(); 
     } catch(Exception e) { 
     e.printStackTrace(); 
     } 
    } 
} 

Answer 1

好吧，只需將寫入文件的部分更改爲您想要對數據執行的操作即可。

while((entry = zis.getNextEntry()) != null) { 
    System.out.println("Extracting: " + entry); 
    int count; 
    byte data[] = new byte[BUFFER]; 
    string filename = entry.getName(); 
    System.out.println("Filename: " + filename); 
    while ((count = zis.read(data, 0, BUFFER)) != -1) { 
     // Do whatever you want with the data variable 
     System.out.println(data); 
    } 
}