POI操作latex公式转mathml生成word文档
2018-02-02 09:37
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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 =
17d48
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);
}
}如果在操作中遇到什么问题,可留言,博主会及时回答,给你意见及解决的办法,博客写得不好的地方,希望谅解!
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