import java.io.File;
import java.io.FileOutputStream;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.stream.StreamSource;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;

public class FOPExample {
    public static void main(String args[]) throws Exception {
        // XSL-FO 문서 경로
        File foFile = new File("path/to/your/foFile.fo");
        // 출력 파일 경로
        File pdfFile = new File("path/to/your/output.pdf");
        
        // FopFactory 생성
        FopFactory fopFactory = FopFactory.newInstance(new File(".").toURI());
        
        // 출력 스트림 생성
        FileOutputStream fos = new FileOutputStream(pdfFile);
        
        try {
            // Fop 인스턴스 생성
            Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, fos);
            
            // XSL-FO 문서 변환을 위한 Transformer 생성
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();
            
            // XSL-FO 문서를 SAXSource로 변환
            SAXSource source = new SAXSource(new StreamSource(foFile));
            
            // 결과를 Fop에 전달
            SAXResult result = new SAXResult(fop.getDefaultHandler());
            
            // 변환 수행
            transformer.transform(source, result);
        } finally {
            fos.close();
        }
    }
}