Creating HTML From PDF, Excel, or Word With Apache NiFi and Apache Tika
Let's look into extracting text or HTML from PDF, Excel, and Word documents via Apache NiFi.
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Join For FreeThis version has been tested with HDF 3.1 and Apache NiFi 1.5. This processor is using Apache Tika 1.17 and is a non-supported open-source community processor that I have written.
A user posted asking about HTML output. I took a look and it was easy so I added an option for that.
Apache NiFi Flow
You must download or build the nifi-extracttextprocessor NAR and put in your library. Then, you can add the processor.
Select HTML or text:
Here's the autogenerated documentation:
You can see we set the output mime.type to text/HTML.
Apache NiFi example flow to read a file and convert to HTML:
Source and JUnit in Eclipse:
Example output HTML:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="pdf:PDFVersion" content="1.3"/>
<meta name="X-Parsed-By" content="org.apache.tika.parser.DefaultParser"/>
<meta name="X-Parsed-By" content="org.apache.tika.parser.pdf.PDFParser"/>
<meta name="xmp:CreatorTool" content="Rave (http://www.nevrona.com/rave)"/>
<meta name="access_permission:modify_annotations" content="true"/>
<meta name="access_permission:can_print_degraded" content="true"/>
<meta name="meta:creation-date" content="2006-03-01T07:28:26Z"/>
<meta name="created" content="Wed Mar 01 02:28:26 EST 2006"/>
<meta name="access_permission:extract_for_accessibility" content="true"/>
<meta name="access_permission:assemble_document" content="true"/>
<meta name="xmpTPg:NPages" content="2"/>
<meta name="Creation-Date" content="2006-03-01T07:28:26Z"/>
<meta name="dcterms:created" content="2006-03-01T07:28:26Z"/>
<meta name="dc:format" content="application/pdf; version=1.3"/>
<meta name="access_permission:extract_content" content="true"/>
<meta name="access_permission:can_print" content="true"/>
<meta name="pdf:docinfo:creator_tool" content="Rave (http://www.nevrona.com/rave)"/>
<meta name="access_permission:fill_in_form" content="true"/>
<meta name="pdf:encrypted" content="false"/>
<meta name="producer" content="Nevrona Designs"/>
<meta name="access_permission:can_modify" content="true"/>
<meta name="pdf:docinfo:producer" content="Nevrona Designs"/>
<meta name="pdf:docinfo:created" content="2006-03-01T07:28:26Z"/>
<meta name="Content-Type" content="application/pdf"/>
<title>
</title>
</head>
<body>
<div class="page">
<p/>
<p> A Simple PDF File
This is a small demonstration .pdf file -
</p>
<p> just for use in the Virtual Mechanics tutorials. More text. And more
text. And more text. And more text. And more text.
</p>
<p> And more text. And more text. And more text. And more text. And more
text. And more text. Boring, zzzzz. And more text. And more text. And
more text. And more text. And more text. And more text. And more text.
And more text. And more text.
</p>
<p> And more text. And more text. And more text. And more text. And more
text. And more text. And more text. Even more. Continued on page 2 ...</p>
<p/>
</div>
<div class="page">
<p/>
<p> Simple PDF File 2
...continued from page 1. Yet more text. And more text. And more text.
And more text. And more text. And more text. And more text. And more
text. Oh, how boring typing this stuff. But not as boring as watching
paint dry. And more text. And more text. And more text. And more text.
Boring. More, a little more text. The end, and just as well. </p>
<p/>
</div>
</body>
</html>The source code can be found here. Here's the NAR release.
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