POI操作latex公式转mathml生成word文档
转发请注明出处,谢谢!
我的上一篇文章已经讲解了用Itext操作的方法,这篇就直接上干货,效果图,注意事项,功能说明及Itext操作请见
http://blog.csdn.net/qq_35834998/article/details/79170388 这篇文章和此文章紧密相关
Itext,POI操作---项目中所有的依赖
<!-- https://mvnrepository.com/artifact/commons-codec/commons-codec --> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.3</version> </dependency> <!-- https://mvnrepository.com/artifact/dom4j/dom4j --> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency>
<!-- https://mvnrepository.com/artifact/stax/stax-api --> <dependency> <groupId>stax</groupId> <artifactId>stax-api</artifactId> <version>1.0.1</version> </dependency> <!-- https://mvnrepository.com/artifact/xml-apis/xml-apis --> <dependency> <groupId>xml-apis</groupId> <artifactId>xml-apis</artifactId> <version>1.4.01</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.xmlbeans/xmlbeans --> <dependency> <groupId>org.apache.xmlbeans</groupId> <artifactId>xmlbeans</artifactId> <version>2.6.0</version> </dependency>
<!-- https://mvnrepository.com/artifact/com.lowagie/itext --> <dependency> <groupId>com.lowagie</groupId> <artifactId>itext</artifactId> <version>2.1.7</version> </dependency> <!-- https://mvnrepository.com/artifact/com.itextpdf/itext-asian --> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itext-asian</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/com.lowagie/itext-rtf --> <dependency> <groupId>com.lowagie</groupId> <artifactId>itext-rtf</artifactId> <version>2.1.7</version> </dependency> <dependency> <groupId>fmath</groupId> <artifactId>fmath-mathml-java</artifactId> <version>3.1</version> </dependency> <dependency> <groupId>org.scilab.forge</groupId> <artifactId>jlatexmath</artifactId> <version>1.0.6</version> </dependency> <dependency> <groupId>jdom</groupId> <artifactId>jdom-jar</artifactId> <version>2.0.6</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-scratchpad</artifactId> <version>3.9</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.16</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-scratchpad</artifactId> <version>3.16</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>ooxml-schemas</artifactId> <version>1.3</version> </dependency> <!-- https://mvnrepository.com/artifact/org.jdom/jdom2 --> <dependency> <groupId>org.jdom</groupId> <artifactId>jdom2</artifactId> <version>2.0.6</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.0</version> </dependency> <!--将latex转换成mathml所需依赖--> <dependency> <groupId>uk.ac.ed.ph.snuggletex</groupId> <artifactId>snuggletex-core</artifactId> <version>1.2.2</version> </dependency>
直接上代码 :
@RunWith(SpringRunner.class) @SpringBootTest @Slf4j public class TextTest { @Autowired private QuesService quesService; private Pattern pattern = Pattern.compile("\\\\\\\\\\[(.*?)\\\\\\\\\\]"); private Pattern compile = Pattern.compile("\\p{Lower}"); private SnuggleEngine engine = new SnuggleEngine(); static File stylesheet = new File("C:\\Program Files\\Microsoft Office\\root\\Office16\\MML2OMML.XSL"); static TransformerFactory tFactory = TransformerFactory.newInstance(); static StreamSource stylesource = new StreamSource(stylesheet); static CTOMath getOMML(String mathML) throws TransformerException, IOException, XmlException { Transformer transformer = tFactory.newTransformer(stylesource); StringReader stringreader = new StringReader(mathML); StreamSource source = new StreamSource(stringreader); StringWriter stringwriter = new StringWriter(); StreamResult result = new StreamResult(stringwriter); transformer.transform(source, result); String ooML = stringwriter.toString(); stringwriter.close(); CTOMathPara ctOMathPara = CTOMathPara.Factory.parse(ooML); CTOMath ctOMath = ctOMathPara.getOMathArray(0); //for making this to work with Office 2007 Word also, special font settings are necessary XmlCursor xmlcursor = ctOMath.newCursor(); while (xmlcursor.hasNextToken()) { XmlCursor.TokenType tokentype = xmlcursor.toNextToken(); if (tokentype.isStart()) { if (xmlcursor.getObject() instanceof CTR) { CTR cTR = (CTR) xmlcursor.getObject(); cTR.addNewRPr2().addNewRFonts().setAscii("Cambria Math"); cTR.getRPr2().getRFonts().setHAnsi("Cambria Math"); } } } return ctOMath; } @Test public void test() throws Exception { XWPFDocument document = new XWPFDocument(); //题目编号 int number = 0; List<String> stringList = Arrays.asList("01162767-2f7d-458d-8945-877a81fd3361", "0040110f-2c26-4865-b999-c8754f5803e3", "04e03596-eb46-4acc-9446-e492f1e664ba", "01ab3b66-81ce-47ee-946e-51247190a9b1", "03275325-4dbb-4d7b-a700-602156faaa2e", "200b40af-9b46-4f76-9856-e77007ff83ca", "0188832e-53f2-4223-bfc7-c9083adc572c" ); for (String id : stringList ) { XWPFParagraph paragraph = document.createParagraph(); paragraph.setSpacingAfter(200); Ques ques = quesService.getQuesFromId(id); //题干类容段落 String[] titleSplit = titleGroup(++number, ques); //按照顺序写入文档 for (int i = 0 ; i < titleSplit.length ; i++ ) { splitWrite(paragraph,document,i,titleSplit); //splitWriteImageLatex(paragraph,document,i,titleSplit); } //选项段落 paragraph = document.createParagraph(); paragraph.setSpacingAfter(200); //四个选项 String[] splitOptions = ques.getOptions().split("\\|\\|\\|"); for (int i = 0 ; i < splitOptions.length ; i++ ) { if (splitOptions[i].contains("http")){ XWPFRun run = paragraph.createRun(); run.setText(chooseTag(i)); paragraph.addRun(run); String image = download(splitOptions[i], "E:\\题库文档\\test06\\" + i + ".png"); writeImage(paragraph,document,image); }else{ XWPFRun run = paragraph.createRun(); run.setText(chooseTag(i)); paragraph.addRun(run); String[] optionsGroup = optionsGroup(splitOptions[i]); for (int a = 0 ; a < optionsGroup.length ; a++ ){ splitWrite(paragraph,document,a,optionsGroup); } //latex2mathMl(paragraph,optionsGroup[a],engine); //splitWriteImageLatex(paragraph,document,i,splitOptions); } } //详解类容 paragraph = document.createParagraph(); paragraph.setSpacingAfter(200); //题目类容段落 String[] analysisSplit = analysisGroup(ques); //按照顺序写入文档 for (int i = 0 ; i < analysisSplit.length ; i++ ) { splitWrite(paragraph,document,i,analysisSplit); //splitWriteImageLatex(paragraph,document,i,analysisSplit); } } document.write(new FileOutputStream("E:\\题库文档\\test06\\text.docx")); document.close(); } /** * 测试带图片段落 * */ @Test public void testCreateParagraphWithImg() throws Exception { BufferedImage read = ImageIO.read(new URL("https://img0.xuehuilema.com/70e93c38-0a35-4944-8d82-a9c00c451d46.png")); System.out.println(read); ImageIO.write(read, "png", new File("E:\\题库文档\\test06\\123.png")); } /** *写入文档操作latex * */ private void splitWrite(XWPFParagraph paragraph,XWPFDocument document,Integer i,String[] split){ Matcher mather = compile.matcher(split[i]); if (!mather.find()){ String comment = split[i]; if(comment.contains("$")){ comment = comment.replaceAll("\\$",""); } XWPFRun run = paragraph.createRun(); run.setText(comment); paragraph.addRun(run); }else{ try { latex2mathMl(paragraph,split[i]); }catch (Exception e){ String image = null; try { image = latexImage(split[i], "E:\\题库文档\\test06\\" + i + ".png"); writeImage(paragraph,document,image); } catch (Exception e1) { e1.printStackTrace(); } } } } /** *写入文档操作latexImage * */ private void splitWriteImageLatex(XWPFParagraph paragraph,XWPFDocument document,Integer i,String[] split) throws Exception { Matcher mather = compile.matcher(split[i]); if (!mather.find()){ XWPFRun run = paragraph.createRun(); run.setText(split[i]); paragraph.addRun(run); }else{ String image = latexImage(split[i], "E:\\题库文档\\test06\\" + i + ".png"); writeImage(paragraph,document,image); } } /** * 转换latex公式并写入文档 * */ private void latex2mathMl(XWPFParagraph paragraph,String latex) throws XmlException, TransformerException, IOException { String mathML = fmath.conversion.ConvertFromLatexToMathML.convertToMathML(latex); mathML = mathML.replaceFirst("<math ", "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" "); CTOMath ctOMath = getOMML(mathML); CTP ctp = paragraph.getCTP(); CTOMath ctoMath = ctp.addNewOMath(); ctoMath.set(ctOMath); } /** * @Description: 设置段落对齐 */ public void setParagraphAlignInfo(XWPFParagraph paragraph, ParagraphAlignment pAlign, TextAlignment vAlign) { if (pAlign != null) { paragraph.setAlignment(pAlign); } if (vAlign != null) { paragraph.setVerticalAlignment(vAlign); } } /** * @Description: 设置段落间距信息,一行=100 一磅=20 */ public void setParagraphSpacingInfo(XWPFParagraph paragraph, boolean isSpace, String before, String after, String beforeLines, String afterLines, boolean isLine, String line, STLineSpacingRule.Enum lineValue) { CTPPr pPPr = getParagraphCTPPr(paragraph); CTSpacing pSpacing = pPPr.getSpacing() != null ? pPPr.getSpacing() : pPPr.addNewSpacing(); if (isSpace) { // 段前磅数 if (before != null) { pSpacing.setBefore(new BigInteger(before)); } // 段后磅数 if (after != null) { pSpacing.setAfter(new BigInteger(after)); } // 段前行数 if (beforeLines != null) { pSpacing.setBeforeLines(new BigInteger(beforeLines)); } // 段后行数 if (afterLines != null) { pSpacing.setAfterLines(new BigInteger(afterLines)); } } // 间距 if (isLine) { if (line != null) { pSpacing.setLine(new BigInteger(line)); } if (lineValue != null) { pSpacing.setLineRule(lineValue); } } } /** * @Description: 得到段落CTPPr */ public CTPPr getParagraphCTPPr(XWPFParagraph p) { CTPPr pPPr = null; if (p.getCTP() != null) { if (p.getCTP().getPPr() != null) { pPPr = p.getCTP().getPPr(); } else { pPPr = p.getCTP().addNewPPr(); } } return pPPr; } /** * 判断是否创建createRun * */ public XWPFRun getOrAddParagraphFirstRun(XWPFParagraph paragraph, boolean isInsert, boolean isNewLine) { XWPFRun pRun = null; if (isInsert) { pRun = paragraph.createRun(); } else { if (paragraph.getRuns() != null && paragraph.getRuns().size() > 0) { pRun = paragraph.getRuns().get(0); } else { pRun = paragraph.createRun(); } } if (isNewLine) { pRun.addBreak(); } return pRun; } /** * @Description 设置字体信息 */ public void setParagraphRunFontInfo(XWPFParagraph paragraph, XWPFRun pRun, String content, String fontFamily, String fontSize) { CTRPr pRpr = getRunCTRPr(paragraph, pRun); if (StringUtils.isNotBlank(content)) { pRun.setText(content); } // 设置字体 CTFonts fonts = pRpr.isSetRFonts() ? pRpr.getRFonts() : pRpr .addNewRFonts(); fonts.setAscii(fontFamily); fonts.setEastAsia(fontFamily); fonts.setHAnsi(fontFamily); // 设置字体大小 CTHpsMeasure sz = pRpr.isSetSz() ? pRpr.getSz() : pRpr.addNewSz(); sz.setVal(new BigInteger(fontSize)); CTHpsMeasure szCs = pRpr.isSetSzCs() ? pRpr.getSzCs() : pRpr .addNewSzCs(); szCs.setVal(new BigInteger(fontSize)); } /** * @Description: 得到XWPFRun的CTRPr */ public CTRPr getRunCTRPr(XWPFParagraph p, XWPFRun pRun) { CTRPr pRpr = null; if (pRun.getCTR() != null) { pRpr = pRun.getCTR().getRPr(); if (pRpr == null) { pRpr = pRun.getCTR().addNewRPr(); } } else { pRpr = p.getCTP().addNewR().addNewRPr(); } return pRpr; } /** * 创建图片xml * */ private void createPicture(String blipId, int id, int width, int height, XWPFParagraph paragraph) { final int EMU = 9525; width *= EMU; height *= EMU; // String blipId = // getAllPictures().get(id).getPackageRelationship().getId(); if (paragraph == null) { XWPFDocument document = new XWPFDocument(); paragraph = document.createParagraph(); } CTInline inline = paragraph.createRun().getCTR().addNewDrawing() .addNewInline(); String picXml = "" + "<a:graphic xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\">" + " <a:graphicData uri=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">" + " <pic:pic xmlns:pic=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">" + " <pic:nvPicPr>" + " <pic:cNvPr id=\"" + id + "\" name=\"img_" + id + "\"/>" + " <pic:cNvPicPr/>" + " </pic:nvPicPr>" + " <pic:blipFill>" + " <a:blip r:embed=\"" + blipId + "\" xmlns:r=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships\"/>" + " <a:stretch>" + " <a:fillRect/>" + " </a:stretch>" + " </pic:blipFill>" + " <pic:spPr>" + " <a:xfrm>" + " <a:off x=\"0\" y=\"0\"/>" + " <a:ext cx=\"" + width + "\" cy=\"" + height + "\"/>" + " </a:xfrm>" + " <a:prstGeom prst=\"rect\">" + " <a:avLst/>" + " </a:prstGeom>" + " </pic:spPr>" + " </pic:pic>" + " </a:graphicData>" + "</a:graphic>"; // CTGraphicalObjectData graphicData = // inline.addNewGraphic().addNewGraphicData(); XmlToken xmlToken = null; try { xmlToken = XmlToken.Factory.parse(picXml); } catch (XmlException xe) { xe.printStackTrace(); } inline.set(xmlToken); // graphicData.set(xmlToken); inline.setDistT(0); inline.setDistB(0); inline.setDistL(0); inline.setDistR(0); CTPositiveSize2D extent = inline.addNewExtent(); extent.setCx(width); extent.setCy(height); CTNonVisualDrawingProps docPr = inline.addNewDocPr(); docPr.setId(id); docPr.setName("docx_img_ " + id); docPr.setDescr("docx Picture"); } /** * 将网络图片保存到本地 * */ private String download(String url,String savePathAndName) throws Exception { url = url.replaceAll("http","https"); BufferedImage read = ImageIO.read(new URL(url)); ImageIO.write(read, "png", new File(savePathAndName)); return savePathAndName; } /** * 题干类容段落处理 * */ private String[] titleGroup(Integer number,Ques ques){ String title = number + "." + ques.getTitle(); //公式处理 title = title.replaceAll("\\\\","\\\\\\\\"); String titleNot = title.replaceAll("\\\\\\\\\\[(.*?)\\\\\\\\\\]","@@@"); Matcher mather = pattern.matcher(title); while (mather.find()){ String formula = mather.group(1); titleNot = titleNot.replaceFirst("@@@", "@@\\$"+formula+"\\$@@"); } String[] titleSplit = titleNot.split("@@"); return titleSplit; } /** * 获取选择题选项标签 * */ private String chooseTag(Integer i){ if (i == 0){ return "A:"; }else if(i == 1){ return " B:"; }else if(i == 2){ return " C:"; }else{ return " D:"; } } /** * 详解类容段落处理 * */ private String[] analysisGroup(Ques ques){ String analysis = ques.getAnalysis(); //公式处理 analysis = analysis.replaceAll("\\\\","\\\\\\\\"); String analysisNot = analysis.replaceAll("\\\\\\\\\\[(.*?)\\\\\\\\\\]","@@@"); Matcher mather = pattern.matcher(analysis); while (mather.find()){ String formula = mather.group(1); analysisNot = analysisNot.replaceFirst("@@@", "@@\\$"+formula+"\\$@@"); } String[] analysisSplit = analysisNot.split("@@"); return analysisSplit; } /** * 选择类容段落处理 * */ private String[] optionsGroup(String option){ //公式处理 option = option.replaceAll("\\\\","\\\\\\\\"); String optionNot = option.replaceAll("\\\\\\\\\\[(.*?)\\\\\\\\\\]","@@@"); Matcher mather = pattern.matcher(option); while (mather.find()){ String formula = mather.group(1); optionNot = optionNot.replaceFirst("@@@", "@@\\$"+formula+"\\$@@"); } String[] optionSplit = optionNot.split("@@"); return optionSplit; } /** * latex公式转图片 * */ private String latexImage(String formulaStr,String path) throws IOException, BadElementException { TeXFormula tf = new TeXFormula(formulaStr); TeXIcon ti = tf.createTeXIcon(TeXConstants.STYLE_DISPLAY, 15); BufferedImage bimg = new BufferedImage(ti.getIconWidth(), ti.getIconHeight(), BufferedImage.TYPE_4BYTE_ABGR); Graphics2D g2d = bimg.createGraphics(); g2d.setColor(Color.white); g2d.fillRect(0,0,ti.getIconWidth(), ti.getIconHeight()); JLabel jl = new JLabel(); jl.setForeground(new Color(0, 0, 0)); ti.paintIcon(jl, g2d, 0, 0); File out = new File(path); ImageIO.write(bimg, "png", out); return path; } /** * 将图片写入文档 * */ private void writeImage(XWPFParagraph paragraph,XWPFDocument document,String image) throws IOException, InvalidFormatException { File file = new File(image); BufferedImage read = ImageIO.read(file); String blipId = paragraph.getDocument().addPictureData( new FileInputStream(file), Document.PICTURE_TYPE_PNG); createPicture(blipId, document.getNextPicNameNumber(Document.PICTURE_TYPE_PNG), read.getWidth(), read.getHeight(),paragraph); } }
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