依赖

<!-- pdf:start --><dependency><groupId>com.itextpdf</groupId><artifactId>itextpdf</artifactId><version>5.5.11</version></dependency><dependency><groupId>com.itextpdf.tool</groupId><artifactId>xmlworker</artifactId><version>5.5.11</version></dependency><!-- 支持中文 --><dependency><groupId>com.itextpdf</groupId><artifactId>itext-asian</artifactId><version>5.2.0</version></dependency><!-- 支持css样式渲染 --><dependency><groupId>org.xhtmlrenderer</groupId><artifactId>flying-saucer-pdf-itext5</artifactId><version>9.1.16</version></dependency><!-- 转换html为标准xhtml包 --><dependency><groupId>net.sf.jtidy</groupId><artifactId>jtidy</artifactId><version>r938</version></dependency><!-- pdf:end -->

使用示例

1、简单使用

package com.pengshiyu;import com.itextpdf.text.Document;import com.itextpdf.text.Font;import com.itextpdf.text.PageSize;import com.itextpdf.text.Paragraph;import com.itextpdf.text.pdf.BaseFont;import com.itextpdf.text.pdf.PdfWriter;import java.io.FileOutputStream;/*** Hello world!*/public class PdfDemo {public static void main(String[] args) throws Exception {// 新建文档Document document = new Document(PageSize.A4);// 如果输出中文，需要设置中文字体BaseFont chineseFont = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);Font font = new Font(chineseFont, 12, Font.NORMAL);PdfWriter.getInstance(document, new FileOutputStream("hello.pdf"));// 打开文档document.open();// 写入内容Paragraph paragraph = new Paragraph("hello world 你好世界", font);document.add(paragraph);// 关闭文档document.close();}}

2、稍复杂的示例

package com.pengshiyu;import com.itextpdf.text.*;import com.itextpdf.text.pdf.BaseFont;import com.itextpdf.text.pdf.PdfName;import com.itextpdf.text.pdf.PdfWriter;import com.itextpdf.text.pdf.codec.Base64;import com.itextpdf.tool.xml.XMLWorker;import com.itextpdf.tool.xml.XMLWorkerFontProvider;import com.itextpdf.tool.xml.css.StyleAttrCSSResolver;import com.itextpdf.tool.xml.html.CssAppliers;import com.itextpdf.tool.xml.html.CssAppliersImpl;import com.itextpdf.tool.xml.html.Tags;import com.itextpdf.tool.xml.parser.XMLParser;import com.itextpdf.tool.xml.pipeline.css.CSSResolver;import com.itextpdf.tool.xml.pipeline.css.CssResolverPipeline;import com.itextpdf.tool.xml.pipeline.end.PdfWriterPipeline;import com.itextpdf.tool.xml.pipeline.html.AbstractImageProvider;import com.itextpdf.tool.xml.pipeline.html.HtmlPipeline;import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;import java.io.*;public class App {/*** 创建PDF文件** @param htmlStr* @throws Exception*/private static void writeToOutputStreamAsPDF(String htmlStr) throws Exception {String targetFile = "pdfDemo.pdf";File targeFile = new File(targetFile);if (targeFile.exists()) {targeFile.delete();}//定义pdf文件尺寸，采用A4横切Document document = new Document(PageSize.A4, 25, 25, 15, 40);// 左、右、上、下间距//定义输出路径PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(targetFile));// PdfReportHeaderFooter header = new PdfReportHeaderFooter("", 8, PageSize.A4);// writer.setPageEvent(header);writer.addViewerPreference(PdfName.PRINTSCALING, PdfName.NONE);document.open();// CSSCSSResolver cssResolver = new StyleAttrCSSResolver();CssAppliers cssAppliers = new CssAppliersImpl(new XMLWorkerFontProvider() {@Overridepublic Font getFont(String fontname, String encoding, boolean embedded, float size, int style, BaseColor color) {try {//用于中文显示的ProviderBaseFont bfChinese = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);return new Font(bfChinese, size, style);} catch (Exception e) {return super.getFont(fontname, encoding, size, style);}}});//htmlHtmlPipelineContext htmlContext = new HtmlPipelineContext(cssAppliers);htmlContext.setTagFactory(Tags.getHtmlTagProcessorFactory());htmlContext.setImageProvider(new AbstractImageProvider() {@Overridepublic Image retrieve(String src) {//支持图片显示int pos = src.indexOf("base64,");try {if (src.startsWith("data") && pos > 0) {byte[] img = Base64.decode(src.substring(pos + 7));return Image.getInstance(img);} else if (src.startsWith("http")) {return Image.getInstance(src);}} catch (BadElementException ex) {return null;} catch (IOException ex) {return null;}return null;}@Overridepublic String getImageRootPath() {return null;}});// PipelinesPdfWriterPipeline pdf = new PdfWriterPipeline(document, writer);HtmlPipeline html = new HtmlPipeline(htmlContext, pdf);CssResolverPipeline css = new CssResolverPipeline(cssResolver, html);// XML WorkerXMLWorker worker = new XMLWorker(css, true);XMLParser p = new XMLParser(worker);p.parse(new ByteArrayInputStream(htmlStr.getBytes()));document.close();}/*** 读取 HTML 文件** @return*/private static String readHtmlFile() {StringBuffer textHtml = new StringBuffer();try {File file = new File("printDemo.html");BufferedReader reader = new BufferedReader(new FileReader(file));String tempString = null;// 一次读入一行，直到读入null为文件结束while ((tempString = reader.readLine()) != null) {textHtml.append(tempString);}reader.close();} catch (IOException e) {return null;}return textHtml.toString();}public static void main(String[] args) throws Exception {// 读取html文件String htmlStr = readHtmlFile();// 将html文件转成PDFwriteToOutputStreamAsPDF(htmlStr);}}

<html><head></head><body><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>出库单</title><div><div><table width="100%" border="0" cellspacing="0" cellpadding="0"><tbody><tr><td height="40" colspan="2"><h3 style="font-weight: bold; text-align: center; letter-spacing: 5px; font-size: 24px;">入库单</h3></td><td width="12%" height="20" rowspan="2"><img style="width: 105px;height: 105px;" src="data:image/jpeg;base64,iVBORw0KGgoAAAANSUhEUgAAAH0AAAB9AQAAAACn+1GIAAAAqElEQVR42u3VMQ7DMAwDQP6A//8lx24qKRRw0s1yu8Uw4OQGIaHsBHUfLzzwAxCAInoZg6dI9dUUBIOyHEG56CmodAaxwtfbboLTVWpeU9+EDAH37m9CmkTYxDGUE0agMIakk3y4Ut8G37iom02M4bPniHWAtqFDTjjSGLrZvXAOmTnL1124C73r6Yo8Ane61k6eQeVjIM2h482D1RwScrpNjuH5R/0b3s6ZZNyKlt3iAAAAAElFTkSuQmCC" /></td></tr><tr><td width="50%" height="30">操作人：xxx</td><td width="50%" height="30" colspan="2">创建时间：-09-14 12:00:00</td></tr></tbody></table></div><div style="margin-top: 5px; margin-bottom: 6px; margin-left: 4px"></div><div><table width="100%"style="border-collapse: collapse; border-spacing: 0;border:0px;"><tr style="height: 25px;"><td style="background: #eaeaea; text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;"width="10%">序号</td><td style="background: #eaeaea; text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;"width="30%">商品</td><td style="background: #eaeaea; text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;"width="30%">单位</td><td style="background: #eaeaea; text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-right: 1px solid #000000;"width="30%">数量</td></tr><tr><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">1</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">xxx沐浴露</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">箱</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-right: 1px solid #000000;">3</td></tr><tr><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">2</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">xxx洗发水</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">箱</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-right: 1px solid #000000;">4</td></tr><tr><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">3</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">xxx洗衣粉</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000;">箱</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-right: 1px solid #000000;">5</td></tr><tr><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-bottom: 1px solid #000000;">4</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-bottom: 1px solid #000000;">xxx洗面奶</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-bottom: 1px solid #000000;">箱</td><td style="text-align: center; border-left: 1px solid #000000; border-top: 1px solid #000000; border-right: 1px solid #000000; border-bottom: 1px solid #000000;">5</td></tr></table></div></div></body></html>

参考

手把手教你使用Java开发在线生成pdf文档