export invoice, change getCell to createCell if getCell is null

src/main/java/com/ffii/tsms/modules/report/service/ReportService.kt

@@ -1325,22 +1325,38 @@ open class ReportService(
 
         salarys.forEachIndexed { index, salary ->
 
-            sheet.getRow(rowIndex++).apply {
+            val row = sheet.getRow(rowIndex) ?: sheet.createRow(rowIndex)
+
+            row?.apply {
 
-                getCell(0).setCellValue(salary.salaryPoint.toDouble())
+                val cell = getCell(0) ?: createCell(0)
+                cell.setCellValue(salary.salaryPoint.toDouble())
                 when (index) {
-                    0 -> getCell(1).setCellValue(salary.lowerLimit.toDouble())
+                    0 -> {
+                        val cell1 = getCell(1) ?: createCell(1)
+                        cell1.setCellValue(salary.lowerLimit.toDouble())
+                    }
 
-                    else -> getCell(1).cellFormula =
-                        "(C{previousRow}+1)".replace("{previousRow}", (rowIndex - 1).toString())
+                    else -> {
+                        val cell1 = getCell(1) ?: createCell(1)
+                        cell1.cellFormula =
+                            "(C{previousRow}+1)".replace("{previousRow}", (rowIndex).toString())
+                    }
                 }
-                getCell(2).cellFormula = "(B{currentRow}+D{currentRow})-1".replace("{currentRow}", rowIndex.toString())
+                val cell2 = getCell(2) ?: createCell(2)
+                cell2.cellFormula = "(B{currentRow}+D{currentRow})-1".replace("{currentRow}", (rowIndex+1).toString())
 //                getCell(2).cellStyle.dataFormat = accountingStyle
-                getCell(3).setCellValue(salary.increment.toDouble())
-                getCell(4).cellFormula =
-                    "(((C{currentRow}+B{currentRow})/2)/20)/8".replace("{currentRow}", rowIndex.toString())
+
+                val cell3 = getCell(3)?:createCell(3)
+                cell3.setCellValue(salary.increment.toDouble())
+
+                val cell4 = getCell(4)?:createCell(4)
+                cell4.cellFormula =
+                "(((C{currentRow}+B{currentRow})/2)/20)/8".replace("{currentRow}", (rowIndex+1).toString())
 //                getCell(4).cellStyle.dataFormat = accountingStyle
+                cell4.cellStyle.dataFormat = accountingStyle
             }
+            rowIndex++;
         }
 //        println(salarys.size)