我已经测试了这条评论中的代码，但我无法添加链接，因为抛出了异常。
要重现问题，只需添加指向 html 的链接。只在 Main.java 上添加了这一行
buf.append("<a href='http://google.com'>link to google</a>");
样式.css
* {
font-family: "Arial";
font-style: normal;
}
主.java
package com.itextpdf;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringReader;
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.ICC_Profile;
import com.itextpdf.text.pdf.PdfAConformanceLevel;
import com.itextpdf.text.pdf.PdfAWriter;
import com.itextpdf.tool.xml.XMLWorker;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import com.itextpdf.tool.xml.css.CssFile;
import com.itextpdf.tool.xml.css.StyleAttrCSSResolver;
import com.itextpdf.tool.xml.html.CssAppliers;
import com.itextpdf.tool.xml.html.CssAppliersImpl;
import com.itextpdf.tool.xml.html.Tags;
import com.itextpdf.tool.xml.parser.XMLParser;
import com.itextpdf.tool.xml.pipeline.css.CSSResolver;
import com.itextpdf.tool.xml.pipeline.css.CssResolverPipeline;
import com.itextpdf.tool.xml.pipeline.end.PdfWriterPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;
public class Main {
public static void main(String[] args) {
StringBuffer buf = new StringBuffer();
String title = "Test";
// Sample HTML content.
buf.append("<!DOCTYPE html>");
buf.append("<html>");
buf.append("<head>");
buf.append("<title>" + title + "</title>");
buf.append("</head>");
buf.append("<body>");
buf.append("<p>This is a test</p>");
buf.append("<a href='http://google.com'>link to google</a>"); //<----- Only added this line
buf.append("</body>");
buf.append("</html>");
OutputStream file = null;
Document document = null;
PdfAWriter writer = null;
try {
file = new FileOutputStream(new File("C:\\Users\\amartin\\Desktop\\Test.pdf"));
document = new Document();
writer = PdfAWriter.getInstance(document, file, PdfAConformanceLevel.PDF_A_1B);
// Avoid discrepances between document title and XMP metadata information.
document.addTitle(title);
// Create XMP metadata. It's a PDF/A requirement.
writer.createXmpMetadata();
document.open();
// Set output intent. PDF/A requirement.
ICC_Profile icc = ICC_Profile.getInstance(new FileInputStream("./src/main/resources/com/itextpdf/sRGB Color Space Profile.icm"));
writer.setOutputIntents("Custom", "", "http://www.color.org", "sRGB IEC61966-2.1", icc);
// CSS stylesheet.
CSSResolver cssResolver = new StyleAttrCSSResolver();
CssFile cssFile = XMLWorkerHelper.getCSS(new FileInputStream("./css/style.css"));
cssResolver.addCss(cssFile);
MyFontProvider fontProvider = new MyFontProvider();
fontProvider.register("./fonts/arial.ttf");
/* DEBUG
System.out.println("Fonts present in " + fontProvider.getClass().getName());
Set<String> registeredFonts = fontProvider.getRegisteredFonts();
for (String font : registeredFonts)
System.out.println(font);
*/
CssAppliers cssAppliers = new CssAppliersImpl(fontProvider);
HtmlPipelineContext htmlContext = new HtmlPipelineContext(cssAppliers);
htmlContext.setTagFactory(Tags.getHtmlTagProcessorFactory());
// Pipelines.
PdfWriterPipeline pdf = new PdfWriterPipeline(document, writer);
HtmlPipeline html = new HtmlPipeline(htmlContext, pdf);
CssResolverPipeline css = new CssResolverPipeline(cssResolver, html);
XMLWorker worker = new XMLWorker(css, true);
XMLParser p = new XMLParser(worker);
Reader reader = new StringReader(buf.toString());
p.parse(reader);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (document != null && document.isOpen())
document.close();
try {
if (file != null)
file.close();
} catch (IOException e) {}
if (writer != null && !writer.isCloseStream())
writer.close();
}
}
}
MyFontProvider.java
package com.itextpdf;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Font;
import com.itextpdf.text.FontFactoryImp;
public class MyFontProvider extends FontFactoryImp {
@Override
public Font getFont(String fontname, String encoding, boolean embedded,
float size, int style, BaseColor color) {
System.out.println("=fontname: " + fontname + " =encoding: " + encoding + " =embedded : " + embedded + " =size: " + size + " =style: " + style + " =BaseColor: " + color);
return super.getFont(fontname, encoding, embedded, size, style, color);
}
}
例外
Exception in thread "main" com.itextpdf.text.pdf.PdfAConformanceException: An annotation dictionary shall contain the F key.
at com.itextpdf.text.pdf.internal.PdfA1Checker.checkAnnotation(PdfA1Checker.java:422)
at com.itextpdf.text.pdf.internal.PdfAChecker.checkPdfAConformance(PdfAChecker.java:219)
at com.itextpdf.text.pdf.internal.PdfAConformanceImp.checkPdfIsoConformance(PdfAConformanceImp.java:71)
at com.itextpdf.text.pdf.PdfWriter.checkPdfIsoConformance(PdfWriter.java:3426)
at com.itextpdf.text.pdf.PdfWriter.checkPdfIsoConformance(PdfWriter.java:3422)
at com.itextpdf.text.pdf.PdfAnnotation.toPdf(PdfAnnotation.java:999)
at com.itextpdf.text.pdf.PdfIndirectObject.writeTo(PdfIndirectObject.java:158)
at com.itextpdf.text.pdf.PdfWriter$PdfBody.write(PdfWriter.java:420)
at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:398)
at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:373)
at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:369)
at com.itextpdf.text.pdf.PdfWriter.addToBody(PdfWriter.java:843)
at com.itextpdf.text.pdf.internal.PdfAnnotationsImp.rotateAnnotations(PdfAnnotationsImp.java:209)
at com.itextpdf.text.pdf.PdfDocument.newPage(PdfDocument.java:990)
at com.itextpdf.text.pdf.PdfDocument.close(PdfDocument.java:865)
at com.itextpdf.text.Document.close(Document.java:416)
at com.itextpdf.Main.main(Main.java:113)