poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]

导入excel文件POI解析时报错：

FileInputStream file = new FileInputStream(new File("G:\\TestData\\test.xls"));//Create Workbook instance holding reference to .xlsx file
XSSFWorkbook workbook = new XSSFWorkbook(file);
//Get first/desired sheet from the workbook
XSSFSheet sheet = workbook.getSheetAt(0);//Iterate through each rows one by one
Iterator<Row> rowIterator = sheet.iterator();
while (rowIterator.hasNext()){Row row = rowIterator.next();//For each row, iterate through all the columnsIterator<Cell> cellIterator = row.cellIterator();while (cellIterator.hasNext()){Cell cell = cellIterator.next();//Check the cell type and format accordinglyswitch (cell.getCellType()){case Cell.CELL_TYPE_NUMERIC:System.out.print(cell.getNumericCellValue() + "t");break;case Cell.CELL_TYPE_STRING:System.out.print(cell.getStringCellValue() + "t");break;}}System.out.println("");
}
file.close();

报错：

org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]at org.apache.poi.util.PackageHelper.open(PackageHelper.java:41)at org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:218)

解决:

//Create Workbook instance holding reference to .xlsx file
XSSFWorkbook workbook = new XSSFWorkbook(file);

修改为：

import org.apache.poi.ss.usermodel.Workbook; Workbook workbook = WorkbookFactory.create(file);

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