java将html富文本带图片转为.docx、 .pdf、 .image的工具类

可以使用Apache POI和iText库来实现将带有图片的富文本转换为.docx和.pdf文件。 1. 将富文本转换为.docx文件 使用Apache POI库可以将富文本转换为.docx文件，具体代码如下： ```java import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import org.apache.poi.xwpf.usermodel.XWPFDocument; import org.apache.poi.xwpf.usermodel.XWPFParagraph; import org.apache.poi.xwpf.usermodel.XWPFRun; public class HtmlToDocxConverter { public static void convert(String htmlFilePath, String docxFilePath) throws IOException { XWPFDocument doc = new XWPFDocument(); XWPFParagraph paragraph = doc.createParagraph(); XWPFRun run = paragraph.createRun(); InputStream in = new FileInputStream(htmlFilePath); run.setText(org.apache.commons.io.IOUtils.toString(in, "UTF-8")); OutputStream out = new FileOutputStream(docxFilePath); doc.write(out); out.close(); doc.close(); } } ``` 2. 将富文本转换为.pdf文件 使用iText库可以将富文本转换为.pdf文件，具体代码如下： ```java import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import com.itextpdf.kernel.pdf.PdfDocument; import com.itextpdf.kernel.pdf.PdfWriter; import com.itextpdf.layout.Document; import com.itextpdf.layout.element.Paragraph; import org.jsoup.Jsoup; import org.jsoup.nodes.Document.OutputSettings; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; public class HtmlToPdfConverter { public static void convert(String htmlFilePath, String pdfFilePath) throws IOException { PdfWriter writer = new PdfWriter(new FileOutputStream(pdfFilePath)); PdfDocument pdf = new PdfDocument(writer); Document document = new Document(pdf); org.jsoup.nodes.Document htmlDoc = Jsoup.parse(new File(htmlFilePath), "UTF-8"); OutputSettings settings = new OutputSettings(); settings.prettyPrint(false); for (Element element : htmlDoc.body().children()) { if ("img".equals(element.tagName())) { byte[] imageBytes = getImageBytes(element.attr("src")); if (imageBytes != null) { com.itextpdf.layout.element.Image image = new com.itextpdf.layout.element.Image( com.itextpdf.io.image.ImageDataFactory.create(imageBytes)); document.add(image); } } else { Elements pElements = element.getElementsByTag("p"); for (Element pElement : pElements) { Paragraph p = new Paragraph(pElement.html()); document.add(p); } } } document.close(); } private static byte[] getImageBytes(String imageUrl) { // 将图片url转换为字节数组 } } ``` 3. 将富文本转换为图片 将富文本转换为图片可以使用第三方工具，如wkhtmltoimage或phantomjs。这里以wkhtmltoimage为例，具体代码如下： ```java import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; public class HtmlToImageConverter { public static void convert(String htmlFilePath, String imageFilePath) throws IOException { List<String> cmd = new ArrayList<>(); cmd.add("wkhtmltoimage"); cmd.add("--quality"); cmd.add("100"); cmd.add(htmlFilePath); cmd.add(imageFilePath); ProcessBuilder pb = new ProcessBuilder(cmd); pb.redirectErrorStream(true); Process process = pb.start(); try { process.waitFor(); } catch (InterruptedException e) { e.printStackTrace(); } } } ```