Now almost everything is resolved. XSSFWorkbook wb = new XSSFWorkbook(new FileInputStream(new File( File path+"Hello.xlsx"))); When the above query is executed, the following error occurs. org.apache.poi.POIXMLException: Strict OOXML isn't currently supported, please see bug #57699 I am using poi 3.17 and jdk 1.7. How can I fix the error?
> How can I fix the error? There are several ways to answer this: 1. As the exception says, this is not implemented and we have bug #57699 to track any attempt to do so. 2. You could check the OOXML spec and implement it yourself ... if you would do it the XmlBeans way, you would have a schema unrelated to the current transitional schema and a lot of the POI OOXML classes have to be modified/duplicated to handle it 3. The easiest: don't save your files in strict open xml format *** This bug has been marked as a duplicate of bug 57699 ***