在做一个导入word的业务时，发现poi并不能很好的读取到文档中的目录和级别，这段代码做个记录

 public ResponseResult importDirectory(MultipartFile file){try {InputStream inputStream = file.getInputStream();XWPFDocument xdoc = new XWPFDocument(inputStream);List<XWPFParagraph> paragraphs = xdoc.getParagraphs();List<ReadDto> readDtos = new ArrayList<>();for (XWPFParagraph paragraph : paragraphs) {String text = paragraph.getText();String titleLvl = getTitleLvl(xdoc, paragraph);if (StringUtil.isNotEmpty(titleLvl)) {int level = Integer.valueOf(titleLvl);
//                System.out.println("text: " + text + ", titleLvl: " + titleLvl);ReadDto readDto = new ReadDto();readDto.setText(text);readDto.setTitleLevel(level);readDtos.add(readDto);}}int zeroCount = 0;//0出现的次数int oneCount = 0;//1出现的次数int twoCount = 0;//2出现的次数int threeCount = 0;//3出现的次数int curPoint = 0;//当前指针值for (int i = 0; i < readDtos.size(); i++) {int curLevel = readDtos.get(i).getTitleLevel();if (curLevel > 4) {throw new BusinessException("暂不支持目录层级超过4层!!!");}if (curPoint == 0) {zeroCount++;curPoint = 1;readDtos.get(i).setOne(zeroCount);} else if (curPoint == 1) {if (curLevel == 0) {zeroCount++;oneCount = 0;twoCount = 0;threeCount = 0;curPoint = 1;readDtos.get(i).setOne(zeroCount);}if (curLevel == 1) {curPoint++;oneCount++;readDtos.get(i).setOne(zeroCount);readDtos.get(i).setTwo(oneCount);}} else if (curPoint == 2) {if (curLevel == 0) {zeroCount++;oneCount = 0;twoCount = 0;threeCount = 0;curPoint = 1;readDtos.get(i).setOne(zeroCount);} else if (curLevel == 1) {oneCount++;twoCount = 0;curPoint = 2;readDtos.get(i).setOne(zeroCount);readDtos.get(i).setTwo(oneCount);} else if (curLevel == 2) {curPoint = 3;twoCount++;threeCount = 0;readDtos.get(i).setOne(zeroCount);readDtos.get(i).setTwo(oneCount);readDtos.get(i).setThr(twoCount);}} else if (curPoint == 3) {if (curLevel == 0) {zeroCount++;oneCount = 0;twoCount = 0;threeCount = 0;curPoint = 1;readDtos.get(i).setOne(zeroCount);} else if (curLevel == 1) {oneCount++;curPoint = 2;twoCount = 0;readDtos.get(i).setOne(zeroCount);readDtos.get(i).setTwo(oneCount);} else if (curLevel == 2) {curPoint = 3;twoCount++;threeCount = 0;readDtos.get(i).setOne(zeroCount);readDtos.get(i).setTwo(oneCount);readDtos.get(i).setThr(twoCount);} else if (curLevel == 3) {threeCount++;if (i < readDtos.size() - 1) {int nextLevel = readDtos.get(i + 1).getTitleLevel();if (nextLevel > 3) {throw new BusinessException("暂不支持目录层级超过4层!!!");}if (nextLevel == 3) {curPoint = 3;} else if (nextLevel < 3) {curPoint = nextLevel + 1;}}readDtos.get(i).setOne(zeroCount);readDtos.get(i).setTwo(oneCount);readDtos.get(i).setThr(twoCount);readDtos.get(i).setFou(threeCount);}}}System.out.println(readDtos);//读取数据结果集合return status ? ResponseResult.success("操作成功") : ResponseResult.failure("操作失败");} catch (IOException e) {e.printStackTrace();throw new RuntimeException(e);}
//        return ResponseResult.failure("操作失败");}private static String getTitleLvl(XWPFDocument doc, XWPFParagraph para) {String titleLvl = "";try {//判断该段落是否设置了大纲级别if (para.getCTP().getPPr().getOutlineLvl() != null) {return String.valueOf(para.getCTP().getPPr().getOutlineLvl().getVal());}} catch (Exception e) {}try {//判断该段落的样式是否设置了大纲级别if (doc.getStyles().getStyle(para.getStyle()).getCTStyle().getPPr().getOutlineLvl() != null) {return String.valueOf(doc.getStyles().getStyle(para.getStyle()).getCTStyle().getPPr().getOutlineLvl().getVal());}} catch (Exception e) {}try {//判断该段落的样式的基础样式是否设置了大纲级别if (doc.getStyles().getStyle(doc.getStyles().getStyle(para.getStyle()).getCTStyle().getBasedOn().getVal()).getCTStyle().getPPr().getOutlineLvl() != null) {String styleName = doc.getStyles().getStyle(para.getStyle()).getCTStyle().getBasedOn().getVal();return String.valueOf(doc.getStyles().getStyle(styleName).getCTStyle().getPPr().getOutlineLvl().getVal());}} catch (Exception e) {}try {if (para.getStyleID() != null) {return para.getStyleID();}} catch (Exception e) {}return titleLvl;}