用java实现html转pdf
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("<style type=\"text/css\" 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(); }}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,StringfontName, 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=\"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;}}
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