ZipInputStream（InputStream，Charset）解码ZipEntry文件名falsely [英] ZipInputStream(InputStream, Charset) decodes ZipEntry file name falsely

问题描述

Java 7应该解决使用除UTF-8之外的字符集解压zip存档的一个老问题。这可以通过构造函数 ZipInputStream（InputStream，Charset）来实现。到现在为止还挺好。在显式设置ISO-8859-1字符集时，我可以解压缩包含文件名中带有变音符号的zip存档。

Java 7 is supposed to fix an old problem with unpacking zip archives with character sets other than UTF-8. This can be achieved by constructor ZipInputStream(InputStream, Charset). So far, so good. I can unpack a zip archive containing file names with umlauts in them when explicitly setting an ISO-8859-1 character set.

但问题：当使用 ZipInputStream.getNextEntry（）对流进行迭代时，这些条目在其名称中具有错误的特殊字符。在我的情况下，umlautü替换为？字符，这显然是错误的。有人知道如何解决这个问题吗？显然 ZipEntry 忽略其基础 ZipInputStream 的 Charset 。它看起来像另一个zip压缩相关的JDK错误，但我也可能做错了。

But here is the problem: When iterating over the stream using ZipInputStream.getNextEntry(), the entries have wrong special characters in their names. In my case the umlaut "ü" is replaced by a "?" character, which is obviously wrong. Does anybody know how to fix this? Obviously ZipEntry ignores the Charset of its underlying ZipInputStream. It looks like yet another zip-related JDK bug, but I might be doing something wrong as well.

...
zipStream = new ZipInputStream(
    new BufferedInputStream(new FileInputStream(archiveFile), BUFFER_SIZE),
    Charset.forName("ISO-8859-1")
);
while ((zipEntry = zipStream.getNextEntry()) != null) {
    // wrong name here, something like "M?nchen" instead of "München"
    System.out.println(zipEntry.getName());
    ...
}

推荐答案

OMG，我玩了两个多小时，但只是五分钟后，我终于在这里发布了问题，我碰到的答案：我的zip文件不是用ISO-8859-1编码，但使用Cp437。因此，构造函数调用应该是：

OMG, I played around for two or so hours, but just five minutes after I finally posted the question here, I bumped into the answer: My zip file was not encoded with ISO-8859-1, but with Cp437. So the constructor call should be:

zipStream = new ZipInputStream(
    new BufferedInputStream(new FileInputStream(archiveFile), BUFFER_SIZE),
    Charset.forName("Cp437")
);

现在它的作用就像一个魅力。对不起，打扰你反正。我希望这可以帮助别人面临类似的问题。

Now it works like a charm. Sorry for bothering you anyway. I hope this helps someone else facing similar problems.

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