sxssf

问题 I developed a Java class to use the SXSSF workbook to overcome the Java Heap error which is always caused by the XSSF workbook when writing very large spreadsheets. See http://poi.apache.org/spreadsheet/how-to.html#sxssf for the solution. In short, I use workbook = new SXSSFWorkbook(SXSSFWorkbook.DEFAULT_WINDOW_SIZE); instead of workbook = new XSSFWorkbook(); This solution works like magic and I am now able to write very large xlsx spreadsheets with a much lower memory footprint. However,

问题 I developed a Java class to use the SXSSF workbook to overcome the Java Heap error which is always caused by the XSSF workbook when writing very large spreadsheets. See http://poi.apache.org/spreadsheet/how-to.html#sxssf for the solution. In short, I use workbook = new SXSSFWorkbook(SXSSFWorkbook.DEFAULT_WINDOW_SIZE); instead of workbook = new XSSFWorkbook(); This solution works like magic and I am now able to write very large xlsx spreadsheets with a much lower memory footprint. However,

问题 I am creating an excel sheet of more than 100k rows. I have used SXSSF, since I am handling huge data SXSSFWorkbook workbook = new SXSSFWorkbook( 10000 ); keeping 10 000 rows in cache. But I am getting java.lang.IllegalArgumentException: Attempting to write a row[23237] in the range [0,23272] that is already written to disk. at org.apache.poi.xssf.streaming.SXSSFSheet.createRow(SXSSFSheet.java:111) I have tried increasing the cache rows to 50 000: SXSSFWorkbook workbook = new SXSSFWorkbook(