Retrieve File Type / Mime Type

Question

Hi all,
I hava some files that are stores on a database as binaries files but without files extensions. And i don't know why but the original file name (with extension) is not stored.
I try to retrieve the extension of file using MIME but without success for the moment. Could you tell me if there any tools in JAVA of course that i can use to retrieve it ?
Thanks in advance for your help and answer.
Regards,
Denez

Answer 1

I would like to apologies.
After a long time of research in the javadoc I find how DROID works!
No it's ok i have adapted a part of code to obtain information that i want.
For your information it works with excel, word, zip for example.
I try with a text/plain file but it doesn"t work at all.
here is my code :
try {
AnalysisController analysisControl = new AnalysisController();
analysisControl.readConfiguration("DROID_config.xml") ;
analysisControl.readSigFile() ;
IdentificationFile identificationFile = new IdentificationFile("C:\\File");
ByteReader byteReader = null;
byteReader = newByteReader(identificationFile);
analysisControl.getSigFile().runFileIdentification(byteReader) ;
// display list of hits
for (int ih = 0; ih < byteReader.getNumHits(); ih++) {
String specificityDisplay = byteReader.getHit(ih).isSpecific()?
"specific" : "generic";
System.out.println(" " + byteReader.getHit(ih).getHitTypeVerbose() + " "
+ specificityDisplay + " hit for " +
byteReader.getHit(ih).getFileFormat().getName() + " [PUID: " +          
            byteReader.getHit(ih).getFileFormat().getPUID() + "]" + " [MIME: "
            + byteReader.getHit(ih).getFileFormat().getMimeType() + "]" );
if (byteReader.getHit(ih).getHitWarning().length() > 0) {
System.out.println(" WARNING: " +
byteReader.getHit(ih).getHitWarning());
} catch (Exception e) {
     Sstem.out.println("exception : " + e.getMessage()) ;
With a text/plain file "byteReader.getNumHits()" == 0.
So it's a condition to say that is a text/plain file.
Could you tell me if i'm wrong or not ?
thanks in advance,
Regards,
Denez