java.io.IOException

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  • Exception when open xls files
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  • FtpClient retrieveFileStream [hangs]
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    • java.io.IOException: Invalid header signature; read 3271134372600964429, expected -2226271756974174256 at org.apache.poi.poifs.storage.HeaderBlockReader.<init>(HeaderBlockReader.java:112) at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:151) at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:298)

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