java使用xmlWorkerHelper将html转pdf

1、引入maven包

         <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itextpdf</artifactId>
                <version>5.5.12</version>
         </dependency>

        <dependency>
                <groupId>com.itextpdf.tool</groupId>
                <artifactId>xmlworker</artifactId>
                <version>5.5.8</version>
        </dependency>

2、编码示例：

import java.io.ByteArrayInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.nio.charset.Charset;
import com.itextpdf.text.Document;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.XMLWorkerHelper;

public class XmlWorkerHelperUtil{

    public static void htmlToPDF(String htmlString,String pdfPath) {
        try {
            Document document = new Document(PageSize.A4);
            PdfWriter pdfWriter = PdfWriter.getInstance(document,
                    new FileOutputStream(pdfPath));
            document.open();
            document.addAuthor("pdf作者");
            document.addCreator("pdf创建者");
            document.addSubject("pdf主题");
            document.addCreationDate();
            document.addTitle("pdf标题,可在html中指定title");
            XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
            InputStream inputStream=null;
            worker.parseXHtml(pdfWriter, document, new ByteArrayInputStream(htmlString.getBytes("UTF-8")),inputStream,Charset.forName("UTF-8"),new AsianFontProvider());
            document.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

3、字体处理：

import com.itextpdf.text.Font;
import com.itextpdf.tool.xml.XMLWorkerFontProvider;

public class AsianFontProvider extends XMLWorkerFontProvider {

    @Override
    public Font getFont(final String fontname, String encoding, float size, final int style) {
        String fntname = fontname;
        if (fntname == null) {

           /*使用的windows里的宋体，可将其文件放资源文件中引入*/

            fntname = "fonts/simsun.ttc";
        }
        if (size == 0) {
            size = 4;
        }
        return super.getFont(fntname, encoding, size, style);
    }
}