【Apache Tika】Get Tika Parsing up and Running in 5 Minutes

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Get Tika parsing up and running in 5 minutes

[size=17.3333339691162px]This page is a quick start guide showing how to add a new parser to Apache Tika. Following the simple steps listed below your new parser can be running in only 5 minutes.

• Get Tika parsing up and running in 5 minutes
  • Getting Started
  • Add your MIME-Type
  • Create your Parser class
  • List the new parser
    
  
  

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关键词：running Minutes apache minute ning Create running minutes simple start

1. Add your MIME-Type
   
2. 
   
3. Tika loads the core, standard MIME-Types from the file "org/apache/tika/mime/tika-mimetypes.xml", which comes from tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml . If your new MIME-Type is a standard one which is missing from Tika, submit a patch for this file!
   
4. 
   
5. If your MIME-Type needs adding, create a new file "org/apache/tika/mime/custom-mimetypes.xml" in your codebase. You should add to it something like this:
   
6. 
   
7. <?xml version="1.0" encoding="UTF-8"?>
   
8. <mime-info>
   
9.    <mime-type type="application/hello">
   
10.           <glob pattern="*.hi"/>
    
11.    </mime-type>
    
12. </mime-info>

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1. Create your Parser class
   
2. 
   
3. Now, you need to create your new parser. This is a class that must implement the Parser interface offered by Tika. Instead of implementing the Parser interface directly, it is recommended that you extend the abstract class AbstractParser if possible. AbstractParser handles translating between API changes for you.
   
4. 
   
5. A very simple Tika Parser looks like this
   
6. 
   
7. package org.apache.tika.parser.hello;
   
8. 
   
9. import java.io.IOException;
   
10. import java.io.InputStream;
    
11. import java.util.Collections;
    
12. import java.util.Set;
    
13. 
    
14. import org.apache.tika.exception.TikaException;
    
15. import org.apache.tika.metadata.Metadata;
    
16. import org.apache.tika.mime.MediaType;
    
17. import org.apache.tika.parser.ParseContext;
    
18. import org.apache.tika.parser.AbstractParser;
    
19. import org.apache.tika.sax.XHTMLContentHandler;
    
20. import org.xml.sax.ContentHandler;
    
21. import org.xml.sax.SAXException;
    
22. 
    
23. public class HelloParser extends AbstractParser {
    
24. 
    
25.         private static final Set<MediaType> SUPPORTED_TYPES = Collections.singleton(MediaType.application("hello"));
    
26.         public static final String HELLO_MIME_TYPE = "application/hello";
    
27.         
    
28.         public Set<MediaType> getSupportedTypes(ParseContext context) {
    
29.                 return SUPPORTED_TYPES;
    
30.         }
    
31. 
    
32.         public void parse(
    
33.                         InputStream stream, ContentHandler handler,
    
34.                         Metadata metadata, ParseContext context)
    
35.                         throws IOException, SAXException, TikaException {
    
36. 
    
37.                 metadata.set(Metadata.CONTENT_TYPE, HELLO_MIME_TYPE);
    
38.                 metadata.set("Hello", "World");
    
39. 
    
40.                 XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
    
41.                 xhtml.startDocument();
    
42.                 xhtml.endDocument();
    
43.         }
    
44. }

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