html 转pdf

package com.cudatec.infra.se.controller;

import org.w3c.dom.Document;
import org.xhtmlrenderer.pdf.ITextRenderer;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.*;

/**
* @program: infra-acm
* @description:
* @author: xuwenjie
* @create: 2020-09-25 10:33
**/
public class TestController {

    public static void main(String[] args) {
        String outputFile = "test.pdf";
        InputStream inputStream = null;
        Document doc = null;
        try {
            OutputStream out = new FileOutputStream(outputFile);
            DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
            ITextRenderer renderer = new ITextRenderer();
            inputStream = new ByteArrayInputStream(buildContent().getBytes("utf-8"));
            doc =builder.parse(inputStream);
            renderer.setDocument(doc, null);
            renderer.layout();
            renderer.createPDF(out, true);
            out.flush();
            out.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

        public static String buildContent() throws IOException {
        //加载邮件html模板
        String fileName = "demo.html";
        InputStream inputStream = ClassLoader.getSystemResourceAsStream(fileName);
        BufferedReader fileReader = new BufferedReader(new InputStreamReader(inputStream));
        StringBuffer buffer = new StringBuffer();
        String line = "";
        try {
            while ((line = fileReader.readLine()) != null) {
            buffer.append(line);
            }
        } catch (Exception e) {
            //日志异常
        } finally {
            inputStream.close();
            fileReader.close();
        }
            String value = buffer.toString();
            //可以对value操作
            return value;
        }
}

//依赖

<!--html 转 pdf -->
	<dependency>
		<groupId>org.xhtmlrenderer</groupId>
		<artifactId>flying-saucer-pdf</artifactId>
		<version>9.0.7</version>
	</dependency>