I'm using poi 3.7 , upload the file is .xlsx
The console show:
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:186)
at poi.POITest.ReadAndPrintExcelFile(POITest.java:15)
at poi.POITest.main(POITest.java:59)
Caused by: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]
at org.apache.poi.openxml4j.opc.ZipPackage.getPartsImpl(ZipPackage.java:147)
at org.apache.poi.openxml4j.opc.OPCPackage.getParts(OPCPackage.java:592)
at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:222)
at org.apache.poi.util.PackageHelper.open(PackageHelper.java:39)
... 3 more
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