...

git clone https://github.com/rdfa/librdfa

And install the library (make sure to have all the libraries that librdfa uses).

./autogen.sh
./configure
make
make install

Building from source

In order to compile librdfa-rdf4j, change into the source directory and execute install using maven.

mvn clean install

Install

You can install libdrfa-rdf4j adding the following maven dependency (make sure to have installed the the librdfa library):

<dependency>
   <groupId>org.apache.any23</groupId>
   <artifactId>apache-any23-librdfa</artifactId>
   <version>${librdfa.rdf4j.version}</version>
</dependency>

Use

Once you have installed librdfa-rdf4j, you can use the parser with the Rio API. For example:

RDFParser rdfParser = Rio.createParser(RDFFormat.RDFA);
Model model = new LinkedHashModel();
rdfParser.setRDFHandler(new StatementCollector(model));
rdfParser.parse(in, "http://www.example.org./");

librdfa extractor