方案总结：
1:poi(html属性支持) 存在一个bug,对于table中的cell中既有文本又有图片的在转化后图片丢失
2:tika(主要是提取内容，转换出来的html不太好)
3.openoffice(依赖安装，转出的html不太好)
4. aspose(功能强大但是付费)，但也可以免费使用，缺点：不支持扩展原因代码不是开源的
5.mammoth(对比poi缺少标签的属性比如颜色字体)，这个不存在一个cell中既有文本又有图片的在转化后图片丢失的问题，对于样式这块支持扩展，样例很多
本文基于poi实现docx to html
1.maven依赖
<dependency>
<groupId>docx4j</groupId>
<artifactId>docx4j</artifactId>
<version>3.3.7</version>
<scope>system</scope>
<systemPath>${project.basedir}/src/main/resources/lib/docx4j-3.3.7.jar</systemPath>
</dependency>
<dependency>
<groupId>org.jdom</groupId>
<artifactId>jdom</artifactId>
<version>2.0.6</version>
<scope>system</scope>
<systemPath>${project.basedir}/src/main/resources/lib/jdom-2.0.6.jar</systemPath>
</dependency>
<dependency>
<groupId>fmath</groupId>
<artifactId>fmath-mathml-java</artifactId>
<version>3.1</version>
<scope>system</scope>
<systemPath>${project.basedir}/src/main/resources/lib/fmath-mathml-java-3.1.jar</systemPath>
</dependency>
<dependency>
<groupId>org.scilab.forge</groupId>
<artifactId>jlatexmath</artifactId>
<version>1.0.8-SNAPSHOT</version>
<scope>system</scope>
<systemPath>${project.basedir}/src/main/resources/lib/jlatexmath-1.0.8-SNAPSHOT.jar</systemPath>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>net.sf.saxon</groupId>
<artifactId>Saxon-HE</artifactId>
<version>9.8.0-12</version>
</dependency>
<!-- https://mvnrepository.com/artifact/fr.opensagres.xdocreport/org.apache.poi.xwpf.converter.core -->
<dependency>
<groupId>fr.opensagres.xdocreport</groupId>
<artifactId>org.apache.poi.xwpf.converter.core</artifactId>
<version>1.0.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/fr.opensagres.xdocreport/org.apache.poi.xwpf.converter.xhtml -->
<dependency>
<groupId>fr.opensagres.xdocreport</groupId>
<artifactId>org.apache.poi.xwpf.converter.xhtml</artifactId>
<version>1.0.6</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-collections4 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.0</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.16</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>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.14</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
2. 代码实现
2.1 docxToHtml方法
// docx转换为html
public static void docxToHtml(String sourceFile, String outDir) throws Exception {
if (!sourceFile.contains(".docx")) {
throw new IllegalArgumentException("you should use docx file");
}
FileInputStream fis = new FileInputStream(sourceFile);
ZipSecureFile.setMinInflateRatio(0.004);
XWPFDocument document = new XWPFDocument(fis);
try {
for (XWPFParagraph paragraph : document.getParagraphs()) {
handle(paragraph);
}
String sourcePrefix = sourceFile.split("\\.")[0];
File sourceDirFile = new File(sourcePrefix);
String parentDir = sourceDirFile.getParent();
String name = sourceDirFile.getName();
UUID uuid = UUID.randomUUID();
String uuidStr = uuid.toString();
uuidStr = uuidStr.replace("-", "").substring(0, 16);
sourcePrefix = parentDir + File.separator + "html" + File.separator;
File tempFileDir = new File(sourcePrefix);
if (!tempFileDir.exists()) {
tempFileDir.mkdirs();
}
String tempFile = sourcePrefix + name + "-temp" + uuidStr + ".docx";
// FileOutputStream out = new FileOutputStream(tempFile);
// document.write(out);
// out.close();
for (XWPFTable table : document.getTables()) {
for (XWPFTableRow row : table.getRows()) {
for (XWPFTableCell cell : row.getTableCells()) {
for (XWPFParagraph paragraph : cell.getParagraphs()) {
handle(paragraph);
}
}
}
}
FileOutputStream out1 = new FileOutputStream(tempFile);
document.write(out1);
out1.close();
fis.close();
FileOutputStream fileOutputStream = null;
OutputStreamWriter outputStreamWriter = null;
try {
XWPFDocument documentNew = new XWPFDocument(Files.newInputStream(Paths.get(tempFile)));
XHTMLOptions options = XHTMLOptions.create();
File dirFile = new File(outDir);
if (!dirFile.exists()) {
dirFile.mkdirs();
}
StringBuilder imageDir = new StringBuilder();
imageDir.append(outDir).append("/image");
File imagrDirFile = new File(imageDir.toString());
if (!imagrDirFile.exists()) {
imagrDirFile.mkdirs();
}
// 存放图片的文件夹
options.setExtractor(new FileImageExtractor(new File(imageDir.toString())));
// html中图片的路径
options.URIResolver(new BasicURIResolver("image"));
// XHTMLOptions options = XHTMLOptions.create();
// options.setIgnoreStylesIfUnused(false);
// options.getStyleSheet().addStyle("table", "border-collapse:collapse;width:100%;");
// options.getStyleSheet().addStyle("td", "border:1px solid black;");
// options.getStyleSheet().addStyle("th", "border:1px solid black;");
// options.setStyleSheet("h3 { display: none; }");
// 自定义内容处理工厂
options.setContentHandlerFactory(new IContentHandlerFactory() {
@Override
public ContentHandler create(OutputStream outputStream, Writer writer, XHTMLOptions xhtmlOptions) {
return outputStream != null ? new TableAwareContentHandler(outputStream, options.getIndent())
: new TableAwareContentHandler(writer, options.getIndent());
}
});
String targetFilePath=outDir+File.separator + name+".html";
fileOutputStream = new FileOutputStream(targetFilePath);
outputStreamWriter = new OutputStreamWriter(fileOutputStream, StandardCharsets.UTF_8);
XHTMLConverter xhtmlConverter = (XHTMLConverter) XHTMLConverter.getInstance();
xhtmlConverter.convert(documentNew, outputStreamWriter, options);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (outputStreamWriter != null) {
outputStreamWriter.close();
}
if (fileOutputStream != null) {
fileOutputStream.close();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
2.2 handle方法
private static void handle(XWPFParagraph paragraph) throws InvalidFormatException, IOException {
CTP ctp = paragraph.getCTP();
XmlObject[] xmlObjects = ctp.selectPath(
"declare namespace m='http://schemas.openxmlformats.org/officeDocument/2006/math' .//m:oMath");
for (XmlObject xmlObject : xmlObjects) {
// System.out.println("在文档中发现公式: " + xmlObject.xmlText());
String mml = MathmlUtils.convertOMML2MML(xmlObject.xmlText());
String latex = MathmlUtils.convertMML2Latex(mml);
latex = LatexUtil.latexFilter(latex);
XmlCursor cursor = xmlObject.newCursor();
cursor.removeXml();
XmlCursor startCursor = cursor.newCursor();
startCursor.toPrevToken();
XWPFRun run = paragraph.createRun();
TeXFormula formula = new TeXFormula(latex);
TeXIcon icon = formula.createTeXIcon(TeXConstants.STYLE_DISPLAY, 20);
BufferedImage image = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = image.createGraphics();
g2.setColor(Color.WHITE);
g2.fillRect(0, 0, icon.getIconWidth(), icon.getIconHeight());
JLabel jl = new JLabel();
jl.setForeground(new Color(0, 0, 0));
icon.paintIcon(jl, g2, 0, 0);
// 创建一个用来存放图像字节的输出流
java.io.ByteArrayOutputStream baos = new java.io.ByteArrayOutputStream();
try {
// 将图像编码为png
ImageIO.write(image, "png", baos);
} catch (IOException e) {
e.printStackTrace();
}
InputStream isa = new ByteArrayInputStream(baos.toByteArray());
// 设置样式为普通文本，可以根据需要调整
run.setBold(false);
run.setItalic(false);
run.setFontSize(14);
run.addPicture(isa, XWPFDocument.PICTURE_TYPE_PNG, "image.png", Units.toEMU(200), Units.toEMU(100));
cursor.toPrevToken();
XmlObject newRunXmlObject = run.getCTR();
if (cursor.toPrevSibling()) {
cursor.toEndToken();
XmlCursor newCursor = newRunXmlObject.newCursor();
newCursor.moveXml(startCursor);
} else { // 否则，把新Run插入到公式所在位置的开头
cursor.toParent();
cursor.toNextToken();
XmlCursor newCursor = newRunXmlObject.newCursor();
newCursor.moveXml(cursor);
}
}
}
2.3 TableAwareContentHandler 类
static class TableAwareContentHandler extends DefaultHandler {
private final OutputStream out;
private final Writer writer;
private boolean startingElement;
private StringBuilder currentCharacters;
private final Integer indent;
private int nbElements;
private boolean firstElement;
SimpleContentHandler simpleContentHandler;
public TableAwareContentHandler(OutputStream out) {
this((OutputStream) out, (Integer) null);
}
public TableAwareContentHandler(OutputStream out, Integer indent) {
this(out, (Writer) null, indent);
simpleContentHandler = new SimpleContentHandler(out, indent);
}
public TableAwareContentHandler(Writer writer, Integer indent) {
this((OutputStream) null, writer, indent);
simpleContentHandler = new SimpleContentHandler(writer, indent);
}
private TableAwareContentHandler(OutputStream out, Writer writer, Integer indent) {
this.out = out;
this.writer = writer;
this.currentCharacters = new StringBuilder();
this.indent = indent;
this.firstElement = true;
}
private void doIndentIfNeeded() throws SAXException {
if (this.indent != null && !this.firstElement) {
StringBuilder content = new StringBuilder("\n");
for (int i = 0; i < this.nbElements; ++i) {
for (int j = 0; j < this.indent; ++j) {
content.append(' ');
}
}
this.write(content.toString());
}
}
public final void characters(char[] ch, int start, int length) throws SAXException {
if (this.startingElement) {
this.write(">");
}
this.startingElement = false;
for (int i = start; i < start + length; ++i) {
char c = ch[i];
this.currentCharacters.append(c);
}
}
protected boolean mustEncodeCharachers() {
return true;
}
protected void flushCharacters(String characters) throws SAXException {
this.write(characters);
}
protected void resetCharacters() {
this.currentCharacters.setLength(0);
}
private void write(String content) throws SAXException {
try {
if (this.out != null) {
this.out.write(content.getBytes());
} else {
this.writer.write(content);
}
} catch (IOException var3) {
throw new SAXException(var3);
}
}
public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException {
if ("th".equals(localName)) {
return;
}
if (this.startingElement) {
this.write(">");
}
if (this.currentCharacters.length() > 0) {
this.flushCharacters(this.currentCharacters.toString());
this.resetCharacters();
}
this.doIndentIfNeeded();
if ("table".equals(localName)) {
this.write("<");
this.write(localName);
this.write(" style=\"border: 1px solid black;\"");
} else if ("tr".equals(localName)) {
this.write("<");
this.write("tr");
this.write(" style=\"border: 1px solid black;\"");
} else if ("td".equals(localName)) {
this.write("<");
this.write("td ");
this.write(" style=\"border: 1px solid black;\"");
} else {
this.write("<");
this.write(localName);
}
int length = attributes.getLength();
if (length > 0) {
String attrName = null;
String attrValue = null;
for (int i = 0; i < length; ++i) {
attrName = attributes.getLocalName(i);
attrValue = attributes.getValue(i);
this.write(" ");
this.write(attrName);
this.write("=\"");
this.write(attrValue);
this.write("\"");
}
}
this.startingElement = true;
this.firstElement = false;
++this.nbElements;
}
public void endElement(String uri, String localName, String name) throws SAXException {
if ("th".equals(localName)) {
return;
}
--this.nbElements;
if (this.currentCharacters.length() > 0) {
this.flushCharacters(this.currentCharacters.toString());
this.resetCharacters();
}
if (this.startingElement) {
this.write("/>");
this.startingElement = false;
} else {
this.doIndentIfNeeded();
if ("table".equals(localName)) {
write("</table>");
} else if ("tr".equals(localName)) {
write("</tr>");
} else if ("td".equals(localName)) {
write("</td>");
} else {
this.write("</");
this.write(localName);
this.write(">");
}
}
}
}
标签：latex,docx,String,write,html,poi,new,options,out From： https://www.cnblogs.com/QAZLIU/p/18283742