测试POI的formula方法
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public static void formula() throws Exception{
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Workbook workbook = new HSSFWorkbook();
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Sheet sheet = workbook.createSheet("formula");
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Row row1 = sheet.createRow(0);
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Row row2 = sheet.createRow(1);
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Row row3 = sheet.createRow(2);
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Cell cell1 = row1.createCell(0);
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cell1.setCellValue("A=");
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Cell cell2 = row1.createCell(1);
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cell2.setCellValue(2);
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Cell cell3 = row2.createCell(0);
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cell3.setCellValue("B=");
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Cell cell4 = row2.createCell(1);
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cell4.setCellValue(4);
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Cell cell5 = row3.createCell(0);
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cell5.setCellValue("Sum=");
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Cell cell6 = row3.createCell(1);
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cell6.setCellType(Cell.CELL_TYPE_FORMULA);
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cell6.setCellFormula("SUM(B1:B2)");
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workbook.getCreationHelper().createFormulaEvaluator().evaluateAll();
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FileOutputStream fileOutputStream = new FileOutputStream(new File("c:/a.xlsx"));
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workbook.write(fileOutputStream);
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fileOutputStream.close();
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System.out.println("执行成功");
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