Java extract .cab files

Question

I want to extract files from a .cab file and save them. I could not find any useful information on other questions and on GitHub there is no documentation.

For now I can iterate through all entries (2 text files) with CAB Parser but I cannot find a good way to save them and would appreciate some hints.

File inputFile = new File(inputPath);
File outputPath = new File(inputFile.getParentFile().getAbsolutePath());

final InputStream is = new FileInputStream(inputFile);
CabParser cabParser = new CabParser(is, inputPath);
Arrays.stream(cabParser.files).forEach(element -> {
    CabFileEntry cabFile = element;
});

Thanks a lot!

If these are Microsoft Cabinet files then you could use the [extract.exe](https://ss64.com/nt/extract.html) or the [extrac32.exe](https://ss64.com/nt/extract.html) command line applications which are part of that OS. You can run these from Java in the background. — DevilsHnd - 退職した, Sep 21 '20 at 21:58

score 1 · Answer 1 · answered Sep 21 '20 at 18:44

This seems to work with simple.cab:

final InputStream is = new FileInputStream("/tmp/simple.cab");
CabParser cabParser = new CabParser(is, new File("/tmp/simple/"));
cabParser.extractStream();

However, it fails with VC_RED.cab.

CabParser README.md:

extract files from within a .cab which are compressed via the LZX compression algorithm

Maybe not all the possible compression algorithms are supported by this library.

One option is to run cabextract with Runtime.exec(...).

Java extract .cab files

1 Answers1