Apache Commons Compress 1.9 发布
jopen 10年前
Apache Commons Compress 1.9 发布,此版本现已提供下载,在没有 GZIP 的情况下支持原始压缩流;修复了 7z 和 tar 包相关的 bug;改进了对 Java 库 XZ 的检测。
更新内容如下:
新特性 o Added support for DEFLATE streams without any gzip framing. Issue: COMPRESS-263. Thanks to Matthias Stevens. Bugs 修复 o When reading 7z files unknown file properties and properties of type kDummy are now ignored. Issue: COMPRESS-287. o Expanding 7z archives using LZMA compression could cause an EOFException. Issue: COMPRESS-286. o Long-Name and -link or PAX-header entries in TAR archives always had the current time as last modfication time, creating archives that are different at the byte level each time an archive was built. Issue: COMPRESS-289. Thanks to Bob Robertson. 改进 o Checking for XZ for Java may be expensive. The result will now be cached outside of an OSGi environment. You can use the new XZUtils#setCacheXZAvailability to overrride this default behavior. Issue: COMPRESS-285.
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); }
来自:http://www.oschina.net/news/56031/apache-commons-compress-1-9-released
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