用 Java 把 html 转成 pdf

HTML转PDF实战

最新推荐文章于 2025-09-28 11:56:48 发布

转载最新推荐文章于 2025-09-28 11:56:48 发布 · 4.5k 阅读

文章标签：

#html #java #string #import #exception #encoding

Java 专栏收录该内容

33 篇文章

订阅专栏

本文介绍如何使用iText和XHTMLRenderer将HTML文件转换为支持中文的PDF文档。通过三个示例代码展示了设置字体、布局及生成PDF的具体步骤。

1。下载iText-2[1].0.8.jar，core-renderer.jar两个包

2。代码

代码 1
package test; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import org.xhtmlrenderer.pdf.ITextFontResolver; import org.xhtmlrenderer.pdf.ITextRenderer; import com.lowagie.text.pdf.BaseFont; public class WordToPdf { /** * @param args */ public static void main(String[] args) throws Exception { // TODO Auto-generated method stub String inputFile = "D://test.html"; String url = new File(inputFile).toURI().toURL().toString(); String outputFile = "D://test.pdf"; System.out.println(url); OutputStream os = new FileOutputStream(outputFile); ITextRenderer renderer = new ITextRenderer(); renderer.setDocument(url); // 解决中文支持问题 ITextFontResolver fontResolver = renderer.getFontResolver(); fontResolver.addFont("C:/Windows/Fonts/SIMSUN.TTC", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); // 解决图片的相对路径问题 // renderer.getSharedContext().setBaseURL("file:/D:/z/temp/"); renderer.layout(); renderer.createPDF(os); os.close(); } }

代码 2

import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import org.xhtmlrenderer.pdf.ITextFontResolver; import org.xhtmlrenderer.pdf.ITextRenderer; import com.lowagie.text.pdf.BaseFont; public class TestFlyingSauser { public static void main( String[] args ) throws Exception { // demo_1(); demo_2(); } // 不支持中文 public static void demo_1() throws Exception { String inputFile = "D:/Test/flying.html"; String url = new File( inputFile ).toURI().toURL().toString(); String outputFile = "D:/Test/flying.pdf"; OutputStream os = new FileOutputStream( outputFile ); ITextRenderer renderer = new ITextRenderer(); renderer.setDocument( url ); renderer.layout(); renderer.createPDF( os ); os.close(); } // 支持中文 public static void demo_2() throws Exception { String outputFile = "G:/demo_3.pdf"; OutputStream os = new FileOutputStream(outputFile); ITextRenderer renderer = new ITextRenderer(); ITextFontResolver fontResolver = renderer.getFontResolver(); fontResolver.addFont("C:/Windows/fonts/simsun.ttc", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); StringBuffer html = new StringBuffer(); // DOCTYPE 必需写否则类似于这样的字符解析会出现错误 html.append("<!DOCTYPE html PUBLIC /"-//W3C//DTD XHTML 1.0 Transitional//EN/" /"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd/">"); html.append("<html xmlns=/"http://www.w3.org/1999/xhtml/">"). append("<head>") .append("<meta http-equiv=/"Content-Type/" content=/"text/html; charset=UTF-8/" />") .append("<mce:style type=/"text/css/" mce_bogus=/"1/"></mce:style><style type=/"text/css/" mce_bogus=/"1/" mce_bogus="1">body {font-family: SimSun;}</style>") .append("</head>") .append("<body>"); html.append("<div>支持中文！</div>"); html.append("</body></html>"); renderer.setDocumentFromString(html.toString()); // 解决图片的相对路径问题 // renderer.getSharedContext().setBaseURL("file:/F:/teste/html/"); renderer.layout(); renderer.createPDF(os); os.close(); }}

代码 3

import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.io.OutputStream; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Document; import org.xhtmlrenderer.pdf.ITextFontResolver; import org.xhtmlrenderer.pdf.ITextRenderer; public class HTML2PDF { /** * 调用方式 htmlToPDF(response.getOutputStream(), htmlstr, "C:/WINDOWS/Fonts/simfang.ttf", "FangSong_GB2312", "GB2312", "http://xxxx/dtd/xhtml1-transitional.dtd"); * * 相关图片必须使用绝对路径才能显示如果要下载生成的文件，在此方法上方加上： * response.setHeader("Content-disposition", * "attachment;filename=英文文件名.pdf"); * * @param 参数 * @param OutputStream out 输出流 * @param String htmlcode html代码。 * * @param String fontName 字体名称如：FangSong_GB2312 * @param String fontpath windows 字体路径如:C:/WINDOWS/Fonts/simfang.ttf * @param String encoding 编码如:GB2312。 * @param String htmlDTDURL 如：http://xxxx/xhtml1-transitional.dtd * version 2009.03.05 */ public void htmlToPDF(OutputStream out, String htmlcode, String fontpath, String fontName, String encoding, String htmlDTDURL) throws Exception { DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); ByteArrayOutputStream bos = new ByteArrayOutputStream(); Transformer transformer = TransformerFactory.newInstance() .newTransformer(); ITextRenderer renderer = new ITextRenderer(); ITextFontResolver resolver = renderer.getFontResolver(); InputStream intream = null; Document doc = null; Document doc2 = null; try { htmlcode = this.filterHeader(htmlcode, encoding, fontName, htmlDTDURL); intream = new ByteArrayInputStream(htmlcode.getBytes(encoding)); doc = (Document) builder.parse(intream); transformer.setOutputProperty("encoding", encoding); new DOMSource(doc); transformer.transform(new DOMSource(doc), new StreamResult(bos)); intream = new ByteArrayInputStream(bos.toString().getBytes()); doc2 = (Document) builder.parse(intream); resolver.addFont(fontpath, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); renderer.setDocument(doc2, null); renderer.layout(); renderer.createPDF(out, true); out.flush(); out.close(); } catch (Exception ex) { throw new Exception(ex.getMessage()); } } /** *文件头 */ private String filterHeader(String htmlcode, String encoding,String fontName,String htmlDTDURL) { htmlcode="<table style="/" mce_style="/""font-family:FangSong_GB2312/" width=/"100%/" height=/"100%/" border=/"0/"><tr><td>"+htmlcode+"</td></tr></table>"; htmlcode="<!DOCTYPE html PUBLIC /"-//W3C//DTD XHTML 1.0 Transitional//EN/" /""+htmlDTDURL+"/" >/n"+htmlcode; htmlcode = "<?xml version=/"1.0/" encoding=/"" + encoding + "/" ?>/n" + htmlcode; return htmlcode; } }