poi读取word中的目录大纲，导入
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;
}