如何使用Java将文件从Zip文件读取到内存中?

我从SUN网站(http://java.sun.com/developer/technicalArticles/Programming/compression/)找到了示例,但是它返回BufferedOutputStream。但是我想将ZipEntry文件作为InputStream,然后处理下一个文件。那可能吗?我的程序无法访问硬盘,因此它甚至无法临时保存文件。

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();

}

}

}

回答:

好吧,只需将将文件写入文件的部分更改为您要处理的数据即可。

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);

}

}

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