如何在用FlyingSaucer创建的PDF中设置元数据

import org.xhtmlrenderer.pdf.ITextRenderer;

public class PDFCreator {
    public static void main(String[] args) throws Exception {
        // 创建一个ITextRenderer对象
        ITextRenderer renderer = new ITextRenderer();
        
        // 设置要转换的HTML文件路径或URL
        String htmlFilePath = "path/to/your/html/file.html";
        renderer.setDocument(new File(htmlFilePath));
        
        // 执行转换
        renderer.layout();
        
        // 保存PDF文件
        String outputFilePath = "path/to/save/output.pdf";
        renderer.createPDF(new FileOutputStream(outputFilePath));
    }
}

import org.xhtmlrenderer.pdf.ITextRenderer;
import com.lowagie.text.pdf.PdfWriter;

public class PDFCreator {
    public static void main(String[] args) throws Exception {
        // 创建一个ITextRenderer对象
        ITextRenderer renderer = new ITextRenderer();
        
        // 设置要转换的HTML文件路径或URL
        String htmlFilePath = "path/to/your/html/file.html";
        renderer.setDocument(new File(htmlFilePath));
        
        // 执行转换
        renderer.layout();
        
        // 获取PDFWriter对象
        PdfWriter writer = renderer.getPDFWriter();
        
        // 设置元数据
        writer.setInfo("Author", "Your Name");
        writer.setInfo("Title", "Your PDF Title");
        writer.setInfo("Subject", "Your PDF Subject");
        writer.setInfo("Keywords", "keyword1, keyword2, keyword3");
        
        // 保存PDF文件
        String outputFilePath = "path/to/save/output.pdf";
        renderer.createPDF(new FileOutputStream(outputFilePath));
    }
}