Tika Jar File Extraction

To extract Jar (Java ARchive) file, Tika provides PackageParser class. This class is used to extract content and metadata from the Jar file. It is located into the org.apache.tika.parser.pkg package and contains various constructors and methods that are tabled below.

Tika PackageParser Constructor

Constructor	Description
public PackageParser()	public PackageParser()

Tika PackageParser Methods

Method	Description
public Set<MediaType> getSupportedTypes(ParseContext context)	It returns the set of media types supported by this parser.
public void parse(InputStream stream, ContentHandler handler, Metadata metadata, ParseContext context) throws IOException, SAXException, TikaException	It parses a document stream into a sequence of XHTML SAX events.
protected static Metadata handleEntryMetadata(String name, Date createAt, Date modifiedAt, Long size, XHTMLContentHandler xhtml) throws SAXException, IOException, TikaException

Tika PackageParser Example

package tikaexample;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.pkg.PackageParser;
import org.apache.tika.sax.BodyContentHandler;
import org.xml.sax.SAXException;
public class JarFileExample {
	public static void main(String[] args) throws IOException, SAXException, TikaException {
		 BodyContentHandler handler   = new BodyContentHandler();
		 PackageParser parser         = new PackageParser(); // It is used to extract archive file.
		 Metadata metadata            = new Metadata();
		 ParseContext pcontext        = new ParseContext();
		 try (InputStream stream = new FileInputStream(new File(
		 "/home/sssit/irfan/tika/example/tikaexample/src/main/java/tikaexample/myjar.jar"))) {
		        parser.parse(stream, handler, metadata, pcontext);
	     System.out.println("Document Content:" + handler.toString());
	     System.out.println("Document Metadata:");
	     String[] metadatas = metadata.names(); 
	     for(String data : metadatas) {
	         System.out.println(data + ":   " + metadata.get(data));  
	     }
		 }catch(Exception e) {System.out.println("Exception message: "+ e.getMessage());}
	   }
	}

Output:

Document Content:
META-INF/MANIFEST.MF
Manifest-Version: 1.0
Created-By: 1.7.0_01 (Oracle Corporation)
Main-Class: First





First.class
public synchronized class First {
    void First();
    public static void main(String[]);
}
Document Metadata:
Content-Type:   application/zip

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