如何使用 UTF-8 编码打开 java 程序生成的 zip 文件

Question

我们的产品有一个出口function，它使用ZipOutputStream到zip一个目录； 但是，当您尝试 zip 包含带有中文或日文字符的文件名的目录时，导出无法正常工作。 由于某种原因，压缩文件中的新文件名称不同。 这是我们的邮政编码示例：

ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
out.setEncoding("UTF-8");
//program to add directory to zip 
//program add/create file to zip
out.close();

我的导入算法，同样内置在 Java 中，可以正确导入压缩文件，即使文件/目录名称中包含中文/日文字符。

 Zipfile zipfile = new ZipFile(zipPath, "UTF-8");
 Enumeration e = zipFile.getEntries();
 while (e.hasMoreElements()) {
 entry = (ZipEntry) e.nextElement();
 String name = entry.getName();
         ....

Is the zip software's program having trouble unzipping the UTF-8 encoded files, or is there something special needed to create a zip file that can be easily used by existing software using utf-8 encoding??

---

我写了一个示例程序：

package ZipFile;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;

public class ZipFolder{
public static void main(String[] a) throws Exception
{
String srcFolder = "D:/9.4_work/openscript_repo/中文124.All/中文";
String destZipFile = "D:/Eclipse_Projects/OpenScriptDebuggingProject/src/ZipFile/demo.zip";
zipFolder(srcFolder, destZipFile);
}

static public void zipFolder(String srcFolder, String destZipFile) throws Exception
{
    ZipOutputStream zip = null;
    FileOutputStream fileWriter = null;

    fileWriter = new FileOutputStream(destZipFile);
    zip = new ZipOutputStream(fileWriter);
    zip.setEncoding("UTF-8");
    // using GBK encoding, the chinese name can be correctly displayed when unzip
    // zip.setEncoding("GBK");

    addFolderToZip("", srcFolder, zip);
    zip.flush();
    zip.close();
}

static private void addFileToZip(String path, String srcFile, ZipOutputStream zip) throws Exception
{

    File folder = new File(srcFile);
    if (folder.isDirectory()) {
        addFolderToZip(path, srcFile, zip);
    }
    else {
        byte[] buf = new byte[1024];
        int len;
        FileInputStream in = new FileInputStream(srcFile);
        zip.putNextEntry(new ZipEntry(path + "/" + folder.getName()));
        while ((len = in.read(buf)) > 0) {
            zip.write(buf, 0, len);
        }
    }
}

static private void addFolderToZip(String path, String srcFolder, ZipOutputStream zip) throws Exception
{
    File folder = new File(srcFolder);

    for (String fileName : folder.list()) {
        if (path.equals("")) {
            addFileToZip(folder.getName(), srcFolder + "/" + fileName, zip);
        }
        else {
            addFileToZip(path + "/" + folder.getName(), srcFolder + "/" + fileName, zip);
        }
    }
}

}

Answer 1

以下实用程序 class 允许您使用 GZIP 压缩算法压缩和解压缩字符串。 例如，如果您想在数据库中保存长字符串，这会很有用。

import java.io.ByteArrayOutputStream;
import java.io.ByteArrayInputStream;
import java.util.zip.GZIPOutputStream;
import java.util.zip.GZIPInputStream;


public class GzipStringUtil {


    public static byte[] compressString(String uncompressedString) throws IllegalArgumentException, IllegalStateException {
        if (uncompressedString == null) {
            throw new IllegalArgumentException("The uncompressed string specified was null.");
        }
        try {
            byte[] utfEncodedBytes = uncompressedString.getBytes("UTF-8");
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            GZIPOutputStream gzipOutputStream = new GZIPOutputStream(baos);
            gzipOutputStream.write(utfEncodedBytes);
            gzipOutputStream.finish();
            gzipOutputStream.close();
            return baos.toByteArray();
        }
        catch (Exception e) {
            throw new IllegalStateException("GZIP compression failed: " + e, e);
        }
    }


    public static String uncompressString(byte[] compressedString) throws IllegalArgumentException, IllegalStateException {
        if (compressedString == null) {
            throw new IllegalArgumentException("The compressed string specified was null.");
        }
        try {
            ByteArrayInputStream bais = new ByteArrayInputStream(compressedString);
            GZIPInputStream gzipInputStream = new GZIPInputStream(bais);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            for (int value = 0; value != -1;) {
                value = gzipInputStream.read();
                if (value != -1) {
                    baos.write(value);
                }
            }
            gzipInputStream.close();
            baos.close();
            return new String(baos.toByteArray(), "UTF-8");
        }
        catch (Exception e) {
            throw new IllegalStateException("GZIP uncompression failed: " + e, e);
        }
    }
}

这是一个 TestCase，它提供了上面 class 的示例用法：

public class GzipStringUtilTest extends TestCase {

    public void testGzipStringUtil() {
        String input = "This is a test. This is a test. This is a test. This is a test. This is a test.";
        System.out.println("Input:        [" + input + "]");
        byte[] compressed = GzipStringUtil.compressString(input);
        System.out.println("Compressed:   " + Arrays.toString(compressed));
        System.out.println("-> Compressed input string of length " + input.length() + " to " + compressed.length + " bytes");
        String uncompressed = GzipStringUtil.uncompressString(compressed);
        System.out.println("Uncompressed: [" + uncompressed + "]");
        assertEquals("The uncompressed string [" + uncompressed + "] unexpectedly does not match the input string [" + input + "]", input, uncompressed);
        System.out.println("The input was compressed and uncompressed successfully, and the input matches uncompressed output.");
    }
}

Answer 2

这里的最佳答案可能会回答您的问题； 不幸的是，它似乎暗示 Zip 格式实际上不允许创建 Zip 文件，该文件将在任何计算机上正确显示文件名：

https://superuser.com/questions/60379/linux-zip-tgz-filenames-encoding-problem

我希望当您将编码设置为 GBK 时它会起作用，因为这是您系统的默认编码，因此 7zip 将其用于它打开的所有 zip 文件。

这表明rar和7z格式有更好的支持。

我在 Java 的 zip 中找到了一个专门关于 UTF-8 的博客条目。 它表明 ZIP 规范的更新版本，当前版本的 Java 可能不会创建，但 Java 7 会创建。 我不知道 Apache 类是否也使用这个。

http://blogs.oracle.com/xuemingshen/entry/non_utf_8_encoding_in