Apache Commons Compress 1.18 发布

内容简介：Apache Commons Compress 1.18 已发布，这是一个 Bug 修复版本， ZIP 软件包的其中一项更改修复了一个可以被用作拒绝服务攻击的漏洞。 下载地址：http://commons.apache.org/proper/commons-compress/download_co...

Apache Commons Compress 1.18 已发布，这是一个 Bug 修复版本， ZIP 软件包的其中一项更改修复了一个可以被用作拒绝服务攻击的漏洞。

下载地址：http://commons.apache.org/proper/commons-compress/download_compress.cgi

其它一些新特性

New features:

• It is now possible to specify the arguments of zstd-jni's ZstdOutputStream constructors via Commons Compress as well.

Fixed Bugs:

• The example Expander class has been vulnerable to a path traversal in the edge case that happens when the target directory has a sibling directory and the name of the target directory is a prefix of the sibling directory's name.

• Changed the OSGi Import-Package to also optionally import javax.crypto so encrypted archives can be read.

• Changed various implementations of the close method to better ensure all held resources get closed even if exceptions are thrown during the closing the stream.

• ZipArchiveInputStream can now detect the APK Signing Block used in signed Android APK files and treats it as an "end of archive" marker.
  

• The cpio streams didn't handle archives using a multi-byte encoding properly.
  

• ZipArchiveInputStream#read would silently return -1 on a corrupted stored entry and even return > 0 after hitting the end of the archive.
  

• ArArchiveInputStream#read would allow to read from the stream without opening an entry at all.

详细更新内容点此查看。

Commons Compress 用以实现将文件压缩或解压成 tar、zip、bzip2 等格式。

下面代码将文件压缩成zip格式：

ArArchiveEntry entry = new ArArchiveEntry(name, size);
arOutput.putArchiveEntry(entry);
arOutput.write(contentOfEntry);
arOutput.closeArchiveEntry();

Zip文件的解压缩：

ArArchiveEntry entry = (ArArchiveEntry) arInput.getNextEntry();
byte[] content = new byte[entry.getSize()];
LOOP UNTIL entry.getSize() HAS BEEN READ {
    arInput.read(content, offset, content.length - offset);
}

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