Tika XML File Extracting

To extract xml file, Tika provides XMLParser class. This class is used to extract content and metadata from xml file. It is located into org.apache.tika.parser.xml package.

This class contains constructor and methods that are tabled below.

Tika XMLParser Constructor

Constructor	Description
public XMLParser()	It is used to create instance of the class.

Tika XMLParser 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 ContentHandler getContentHandler(ContentHandler handler, Metadata metadata, ParseContext context)	It is used to get content handler.

Tika XML File Extracting Example

In this example, we are extracting content and metadata from a xml file. See the example.

package tikaexample;

import java.io.InputStream;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.xml.XMLParser;
import org.apache.tika.sax.BodyContentHandler;
public class XmlParserExample {	
	public static void main(String[] args) {
		 BodyContentHandler handler   = new BodyContentHandler();
		 XMLParser parser             = new XMLParser();
		 Metadata metadata            = new Metadata();
		 ParseContext pcontext        = new ParseContext();
		 try (InputStream stream = AutoDetectParseExample.class.getResourceAsStream("web.xml")) {
		        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());}
	}
}

// web.xml

Our XML file.

<?xml version="1.0" encoding="UTF-8"?>
   <servlet>
        <servlet-name>default</servlet-name>
        <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
        <init-param>
            <param-name>debug</param-name>
            <param-value>0</param-value>
        </init-param>
        <init-param>
            <param-name>listings</param-name>
            <param-value>false</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

Output:

Document Content: 
         default
         org.apache.catalina.servlets.DefaultServlet
         
             debug
             0
        
         
             listings
             false
        
         1
    

Document Metadata:
Content-Type:   application/xml

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