java - 在内存中解压缩 *.docx 文件而不写入磁盘 - Java

Question

我想将 *.docx 文件解压缩到内存中，而不将输出写入磁盘。我找到了以下实现，但它只允许读取压缩文件，而不能查看目录结构。了解目录树中每个文件的位置对我来说很重要。有人可以给我指点吗？

private static void UnzipFileInMemory() {
    try {
        ZipFile zf = new ZipFile("d:\\a.docx");

        int i = 0;
        for (Enumeration e = zf.entries(); e.hasMoreElements();) {
            InputStream in = null;
            try {
                ZipEntry entry = (ZipEntry) e.nextElement();
                System.out.println(entry);
                in = zf.getInputStream(entry);
            } catch (IOException ex) {
                //Logger.getLogger(Tester.class.getName()).log(Level.SEVERE, null, ex);
            } finally {
                try {
                    in.close();
                } catch (IOException ex) {
                    //Logger.getLogger(Tester.class.getName()).log(Level.SEVERE, null, ex);
                }
            }

        }
    } catch (IOException ex) {
        //Logger.getLogger(Tester.class.getName()).log(Level.SEVERE, null, ex);
    }
}

Answer 1

使用 ZipInputStream :本例中的 zEntry 为您提供文件位置。

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class unzip {

    public static void main(String[] args) {

        String filePath = "D:/Tmp/Tmp.zip";
        String oPath = "D:/Tmp/";

        new unzip().unzipFile(filePath, oPath);
    }

    public void unzipFile(String filePath, String oPath) {

        FileInputStream fis = null;
        ZipInputStream zipIs = null;
        ZipEntry zEntry = null;
        try {
            fis = new FileInputStream(filePath);
            zipIs = new ZipInputStream(new BufferedInputStream(fis));
            while ((zEntry = zipIs.getNextEntry()) != null) {
                try {                   
                    FileOutputStream fos = null;
                    String opFilePath = oPath + zEntry.getName();
                    fos = new FileOutputStream(opFilePath);
                    System.out.println(zEntry.getName());

                    fos.flush();
                    fos.close();
                } catch (Exception ex) {

                }
            }
            zipIs.close();
            fis.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}