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  • Invalid Header Signature
    via Stack Overflow by Aditya Lodha
  • Exception when open xls files
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  • apache poi - 必应
    via by Unknown author,
    • Invalid header signature; read 0, expected -2226271756974174256 at<init>( at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>( at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>( at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>( at tracker.TimecardSpreadsheet.openWorkbook( at tracker.TimecardSpreadsheet.<init>( at tracker.TimeTracker.tick( at tracker.TimeTracker.access$1200( at tracker.TimeTracker$ at java.util.TimerThread.mainLoop(Unknown Source) at Source)

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