Apache Commons压缩:打开.tar.gz
问题描述:
我正在开发一个软件,它将从tar.gz文件中获取信息,并使用Apache commons-compress lib。但我发现了以下错误:Apache Commons压缩:打开.tar.gz
Caused by: java.lang.IllegalArgumentException: Invalid byte 4 at offset 0 in 'O�!�C' len=8
at org.apache.commons.compress.archivers.tar.TarUtils.parseOctal(TarUtils.java:134)
at org.apache.commons.compress.archivers.tar.TarUtils.parseOctalOrBinary(TarUtils.java:166)
at org.apache.commons.compress.archivers.tar.TarArchiveEntry.parseTarHeader(TarArchiveEntry.java:953)
at org.apache.commons.compress.archivers.tar.TarArchiveEntry.parseTarHeader(TarArchiveEntry.java:940)
at org.apache.commons.compress.archivers.tar.TarArchiveEntry.<init>(TarArchiveEntry.java:324)
at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextTarEntry(TarArchiveInputStream.java:274)
... 2 more
使用的样品tar.gz文件是Eclipse的JEE-月神-SR1-Linux的GTK的x86_64.tar.gz
这里是类使用lib:
public class TarGzBuildAdapter extends BuildAdapter {
public TarGzBuildAdapter(File build) {
super(build);
}
@Override
public List<ArtifactInfo> getArtifactInfos() throws IOException {
TarArchiveInputStream tarArchiveInputStream = new TarArchiveInputStream(
new FileInputStream(this.build));
TarArchiveEntry tarArchiveEntry;
List<ArtifactInfo> artifactInfos = new LinkedList<ArtifactInfo>();
while ((tarArchiveEntry = tarArchiveInputStream.getNextTarEntry()) != null) {
System.out.println(String.format("Name: %s LinkName: %s Size: %Ld RealSize: %Ld",
tarArchiveEntry.getName(), tarArchiveEntry.getLinkName(),
tarArchiveEntry.getSize(), tarArchiveEntry.getRealSize()));
artifactInfos.add(new ArtifactInfo(tarArchiveEntry.getName(), tarArchiveEntry
.getRealSize()));
}
tarArchiveInputStream.close();
return artifactInfos;
}
}
答
您读取的文件不是TAR,而是GZ流。在使用TarArchiveInputStream
之前,您需要先解压缩它。
tarArchiveInputStream = new TarArchiveInputStream(
new GzipCompressorInputStream(
new BufferedInputStream(
new FileInputStream(fileName))));
+0
你说得对。谢谢! – 2015-01-26 20:41:54
要获得任何有意义的答案,您必须提供您使用commons-compress编写的代码。 – PaulProgrammer 2015-01-26 20:29:02
我敢打赌,这个错误是在你的代码中,而不是在Apache Commons中 – m0skit0 2015-01-26 20:29:41
你使用的是什么版本的Apache commons压缩库 - 它是1.3吗? – Sigismundus 2015-01-26 20:31:38