我想压缩一个结构如下的文件夹:

临时/文件夹1/文件1

临时/文件夹2/文件2

临时文件/文件 3

并准确地维护目录结构。 目前，当我压缩它时，我得到一个不维护目录结构的压缩文件。看起来像这样 文件1 文件2 文件3

我该怎么做才能像所有普通的压缩应用程序一样将文件添加到各自的文件夹中？

这是我目前的代码:

package com.damastah.deflash;

import android.util.Log;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class Compress {
    private static final int BUFFER = 2048;

    private ArrayList<File> _files;
    private String _zipFile;

    public Compress(ArrayList<File> files, String zipFile) {
        _files = files;
        _zipFile = zipFile;
    }

    public void zip() {
        try {
            BufferedInputStream origin = null;
            FileOutputStream dest = new FileOutputStream(_zipFile);

            ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(
                    dest));

            byte data[] = new byte[BUFFER];
            Log.e("Compress - zip", "test");
            for (int i = 0; i < _files.size(); i++) {
                Log.v("Compress", "Adding: " + _files.get(i).getAbsolutePath());
                FileInputStream fi = new FileInputStream(_files.get(i)
                        .getAbsolutePath());
                origin = new BufferedInputStream(fi, BUFFER);
                ZipEntry entry;
                if (_files.get(i).getAbsolutePath().contains("."))
                    entry = new ZipEntry(_files
                            .get(i)
                            .getAbsolutePath()
                            .substring(
                                    _files.get(i).getAbsolutePath()
                                            .lastIndexOf("/") + 1));
                else
                    entry = new ZipEntry(_files.get(i).getAbsolutePath());
                out.putNextEntry(entry);

                int count;
                while ((count = origin.read(data, 0, BUFFER)) != -1) {
                    out.write(data, 0, count);
                }

                origin.close();
            }

            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}

最佳答案

我不是 android 开发人员，所以将此代码视为一个提示

class ZipCompress {
    public static void main(String[] args) throws IOException {

        String dir = "d:\\My folder\\";
        // this entries I want to put in archives in the way they are now
        String[] entries = { "temp\\folder1\\file1.txt", "temp\\folder2\\file2.txt",
                "temp\\file3.txt" };

        ZipOutputStream zipos = new ZipOutputStream(new BufferedOutputStream(
                new FileOutputStream(dir + "archive.zip")));

        // time to create entries and fill them with data
        for (String entrie : entries) {
            System.out.println("Writing file: " + dir + entrie);

            // prepering file stream
            BufferedInputStream fileStream = new BufferedInputStream(
                    new FileInputStream(dir + entrie));

//--------------------------------------------------------------------------
//          Here we decide how we entry will look like in archive.
//          We use only part of path from String[] entries
//          like "temp\\folder1\\file1.txt"
//--------------------------------------------------------------------------
            ZipEntry newEntry = new ZipEntry(entrie);

            newEntry.setComment("comment to entry: " + newEntry);

            // now lets put this entry in archive
            zipos.putNextEntry(newEntry);

            // lets put data from file to current archive entry
            int c;
            while ((c = fileStream.read()) != -1)
                zipos.write(c);
            fileStream.close();
        }
        zipos.close();
    }
}

编辑

我不知道你想在这里做什么

if (_files.get(i).getAbsolutePath().contains("."))
                    entry = new ZipEntry(_files
                            .get(i)
                            .getAbsolutePath()
                            .substring(
                                    _files.get(i).getAbsolutePath()
                                            .lastIndexOf("/") + 1));

据我所知，它删除了文件路径，只留下文件名(类似于 _files.get(i).getName())。如果是这样，那么这就是您的 zip 文件中没有文件夹结构的原因。你是说 zip 条目应该只是那个文件名，没有任何文件夹。

因此，如果您希望 zip 文件包含来自 /my/full/path/to/folder/temp/folder1/file1 就像 temp/folder1/file1 只是在创建 ZipEntry 时删除该路径中不必要的部分

String dir = "/my/full/path/to/folder/";
for (int i = 0; i < _files.size(); i++) {
...
    if (_files.get(i).getAbsolutePath().contains(".")) {
        entry = new ZipEntry(_files
            .get(i).getAbsolutePath().replace(dir, ""));
...

关于java - 在 Java 中压缩时如何维护文件夹结构？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11173146/