trajano/HtmlToPdf.java

## HtmlToPdf.java
import com.openhtmltopdf.DOMBuilder;
import com.openhtmltopdf.outputdevice.helper.BaseRendererBuilder;
import com.openhtmltopdf.pdfboxout.PdfRendererBuilder;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

@Component
public class HtmlToPdf {

    public void convert(String html, OutputStream os) {

        Document document = Jsoup.parse(html);
        this.convert(document, os);
    }

    public void convert(Document document, OutputStream os) {
        document.head().append("<style>@page { size: 975px 1248px; margin: 10px; } body { font-family: 'noto', sans-serif;} td { text-align: left; } td[align='right'] { text-align: right; }</style>");

        try {
            new PdfRendererBuilder()
                .withW3cDocument(DOMBuilder.jsoup2DOM(document), "/")
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSansCJKtc-Regular.ttf"), "noto")
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSansCJKtc-Bold.ttf"), "noto", 700, BaseRendererBuilder.FontStyle.NORMAL, true)
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoColorEmoji.ttf"), "noto")
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoEmoji-Regular.ttf"), "noto")
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSansKhmer-Regular.ttf"), "noto")
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-Regular.ttf"), "noto")
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-Bold.ttf"), "noto", 700, BaseRendererBuilder.FontStyle.NORMAL, true)
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-Italic.ttf"), "noto", 400, BaseRendererBuilder.FontStyle.ITALIC, true)
                .useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-BoldItalic.ttf"), "noto", 700, BaseRendererBuilder.FontStyle.ITALIC, true)
                .toStream(os)
                .run();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public void convert(InputStream is, OutputStream os) throws IOException {

        Document document = Jsoup.parse(is, "utf8", "/test.html");
        this.convert(document, os);
    }
}

## PdfTest.java
    @Test
    public void testCreatePdfWithComplexCharacters() throws Exception {
        HtmlToPdf htmlToPdf = new HtmlToPdf();

        File t = File.createTempFile("test", ".pdf");
        try (OutputStream os = new FileOutputStream(t)) {
            htmlToPdf.convert(this.getClass().getResourceAsStream("/test.html"), os);
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            t.delete();
        }
    }

## test.html
<!DOCTYPE html>
<html>
<head>
    <title>hello</title>
</head>
<body>
<p>Objective: トレンドがわかる、気になるファッションランキング</p>

<p>Simplified 你好世界在学校</p>
<p>Traditional 你好世界在學校</p>
<p>Cambodian ភាសាខ្មែរ</p>
🤷 Person Shrugging
♡ White Heart Suit
❤ Red Heart
🎃 Jack-O-Lantern
😂 Face With Tears of Joy
😍 Smiling Face With Heart-Eyes
🤔 Thinking Face
😊 Smiling Face With Smiling Eyes
🔥 Fire
</body>
</html>
	import com.openhtmltopdf.DOMBuilder;
	import com.openhtmltopdf.outputdevice.helper.BaseRendererBuilder;
	import com.openhtmltopdf.pdfboxout.PdfRendererBuilder;
	import org.jsoup.Jsoup;
	import org.jsoup.nodes.Document;
	import org.springframework.stereotype.Component;

	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;

	@Component
	public class HtmlToPdf {

	public void convert(String html, OutputStream os) {

	Document document = Jsoup.parse(html);
	this.convert(document, os);
	}

	public void convert(Document document, OutputStream os) {
	document.head().append("<style>@page { size: 975px 1248px; margin: 10px; } body { font-family: 'noto', sans-serif;} td { text-align: left; } td[align='right'] { text-align: right; }</style>");

	try {
	new PdfRendererBuilder()
	.withW3cDocument(DOMBuilder.jsoup2DOM(document), "/")
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSansCJKtc-Regular.ttf"), "noto")
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSansCJKtc-Bold.ttf"), "noto", 700, BaseRendererBuilder.FontStyle.NORMAL, true)
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoColorEmoji.ttf"), "noto")
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoEmoji-Regular.ttf"), "noto")
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSansKhmer-Regular.ttf"), "noto")
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-Regular.ttf"), "noto")
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-Bold.ttf"), "noto", 700, BaseRendererBuilder.FontStyle.NORMAL, true)
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-Italic.ttf"), "noto", 400, BaseRendererBuilder.FontStyle.ITALIC, true)
	.useFont(() -> Thread.currentThread().getContextClassLoader().getResourceAsStream("fonts/NotoSans-BoldItalic.ttf"), "noto", 700, BaseRendererBuilder.FontStyle.ITALIC, true)
	.toStream(os)
	.run();
	} catch (Exception e) {
	throw new RuntimeException(e);
	}
	}

	public void convert(InputStream is, OutputStream os) throws IOException {

	Document document = Jsoup.parse(is, "utf8", "/test.html");
	this.convert(document, os);
	}
	}
	@Test
	public void testCreatePdfWithComplexCharacters() throws Exception {
	HtmlToPdf htmlToPdf = new HtmlToPdf();

	File t = File.createTempFile("test", ".pdf");
	try (OutputStream os = new FileOutputStream(t)) {
	htmlToPdf.convert(this.getClass().getResourceAsStream("/test.html"), os);
	} catch (Exception e) {
	throw new RuntimeException(e);
	} finally {
	t.delete();
	}
	}
	<!DOCTYPE html>
	<html>
	<head>
	<title>hello</title>
	</head>
	<body>
	<p>Objective: トレンドがわかる、気になるファッションランキング</p>

	<p>Simplified 你好世界在学校</p>
	<p>Traditional 你好世界在學校</p>
	<p>Cambodian ភាសាខ្មែរ</p>
	🤷 Person Shrugging
	♡ White Heart Suit
	❤ Red Heart
	🎃 Jack-O-Lantern
	😂 Face With Tears of Joy
	😍 Smiling Face With Heart-Eyes
	🤔 Thinking Face
	😊 Smiling Face With Smiling Eyes
	🔥 Fire
	</body>
	</html>