Java用POI解析excel并获取所有单元格数据的实例
发布时间:2020-05-25 06:35:02 所属栏目:Java 来源:互联网
导读:1.导入POI相关jar包org.apache.poijar2.代码示例publicListgetAllExcel(Filefile,StringtableName,Stringfname, StringenterpriseId,StringreportId,StringprojectId)
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1.导入POI相关jar包 org.apache.poi jar 2.代码示例
public List getAllExcel(File file,String tableName,String fname, String enterpriseId,String reportId,String projectId)
throws FileNotFoundException,IOException,ClassNotFoundException, InstantiationException,IllegalAccessException, NoSuchMethodException,SecurityException,IllegalArgumentException, InvocationTargetException,ParseException {
List listt = new ArrayList();
try {
FileInputStream fis = new FileInputStream(file);
Workbook workbook = null;
if (fname.toLowerCase().endsWith("xlsx")) {
workbook = new XSSFWorkbook(fis);
} else if (fname.toLowerCase().endsWith("xls")) {
workbook = new HSSFWorkbook(new POIFSFileSystem(fis));
}
int numberOfSheets = workbook.getNumberOfSheets();
for (int i = 0; i < numberOfSheets; i++) {
Sheet sheet = workbook.getSheetAt(i);
for (int j = 1; j < sheet.getPhysicalNumberOfRows(); j++) { // 获取每行
XSSFRow row = (XSSFRow) sheet.getRow(j);
if(row!=null){
List list = new ArrayList();
for (int k = 0; k < sheet.getRow(0).getPhysicalNumberOfCells(); k++) { // 获取每个单元格
Cell cell = row.getCell(k);
if (cell == null) {
list.add("");
continue;
}
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
list.add(cell.getRichStringCellValue().getString());
break;
case Cell.CELL_TYPE_NUMERIC:
if (DateUtil.isCellDateFormatted(cell)) {
list.add(cell.getDateCellValue());
} else {
list.add(cell.getNumericCellValue());
}
break;
case Cell.CELL_TYPE_BOOLEAN:
list.add(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_FORMULA:
list.add(cell.getCellFormula());
break;
default:
list.add("");
break;
}
}
listt.add(getByReflect(tableName,list,enterpriseId,reportId,projectId));
}
}
}
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
return listt;
}
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