import org.openrdf.rio.rdfxml.util.RDFXMLPrettyWriter; //导入依赖的package包/类
@GET
@Path("/live")
public Response retrieveLive(@QueryParam("uri") String uri) {
    if(cacheSailProvider.isEnabled()) {
        try {
            ClientResponse response = cacheSailProvider.getLDClient().retrieveResource(uri);

            ByteArrayOutputStream out = new ByteArrayOutputStream();
            RDFHandler handler = new RDFXMLPrettyWriter(out);

            ModelCommons.export(response.getData(), handler);

            return Response.ok().entity( new String(out.toByteArray(), "utf-8")).build();
        } catch (Exception e) {
            log.error("exception while retrieving resource",e);
            return Response.status(500).entity(e.getMessage()).build();
        }
    } else {
        return Response.status(Status.SERVICE_UNAVAILABLE).entity("caching is disabled").build();
    }
}
 

import org.openrdf.rio.rdfxml.util.RDFXMLPrettyWriter; //导入依赖的package包/类
public static Set<String> getAvaiableWriters(){
    N3Writer n = null;
    NTriplesWriter nt = null;
    RDFXMLPrettyWriter x2 = null;
    RDFXMLWriter x = null;
    TriGWriter tr = null;
    TriXWriter tw = null;
    TurtleWriter t = null;
    HashSet<String> results = new HashSet<String>();
    StringWriter writer = new StringWriter();
    for (RDFFormat rdfFormat:RDFFormat.values()){
        RDFWriter rdfWriter = getWriterIfPossible(rdfFormat, writer); 
        if (rdfWriter != null){
            results.add(rdfFormat.getName());
        }
    }
    return results;
}
 

import org.openrdf.rio.rdfxml.util.RDFXMLPrettyWriter; //导入依赖的package包/类
@Override
public void load(Repository rpstr, URI uri, LoadContext lc) throws LoadException {
    try {
        RepositoryConnection con = rpstr.getConnection();
        try {
            con.export(new RDFXMLPrettyWriter(System.out), uri);
        } finally {
            con.close();
        }
    } catch (Exception ex) {
        throw new LoadException(ex);
    }
}
 

import org.openrdf.rio.rdfxml.util.RDFXMLPrettyWriter; //导入依赖的package包/类
public void exportDB() throws Exception
{
	System.err.println("Exporting database");
	rc.export(new RDFXMLPrettyWriter(new FileWriter(fileName)));
}