import com.hp.hpl.jena.n3.IRIResolver; //导入依赖的package包/类
public TranslationTableParser(String url) {
	try {
		this.url = new IRIResolver().resolve(url);;
		this.reader = new BufferedReader(new FileReader(new File(new URI(this.url))));
	} catch (FileNotFoundException fnfex) {
		throw new D2RQException("File not found at URL: " + this.url);
	} catch (URISyntaxException usynex) {
		throw new D2RQException("Malformed URI: " + this.url);
	}
}
 

import com.hp.hpl.jena.n3.IRIResolver; //导入依赖的package包/类
public void setBaseURI(String u)
{
    resolver = new IRIResolver(u) ;
}