poi excel in operation, some of the code that can be used with a long

1. The position of the cell strings, to obtain row and column location; for example "A2" - a first row and second column

// 数据开始行，列
String startDataCell = "A2";
CellReference cellReference = new CellReference(startDataCell);
int dataStartRow = cellReference.getRow();
int dataStartCol = cellReference.getCol();

2. Get all the combined sheet according to the sheet cell range

int numMergedRegions = sheet.getNumMergedRegions();
for (int i = 0; i < numMergedRegions; i++) {

    CellRangeAddress mergedRegion = sourceSheet.getMergedRegion(i);

    int firstRow = mergedRegion.getFirstRow();
    int firstColumn = mergedRegion.getFirstColumn();
    int lastRow = mergedRegion.getLastRow();
    int lastColumn = mergedRegion.getLastColumn();

    
　　　// 根据坐标，创建新的合并区域
    CellRangeAddress cellRangeAddress = new CellRangeAddress(firstRow, lastRow, firstColumn, lastColumn);
    targetSheet.addMergedRegion(cellRangeAddress);
}

3. Copy cell formatting

            // assign the source cell to the target cell format 
        CellStyle sourceCellStyle = sourceCell.getCellStyle ();
         / * 
            here because it is a new workbook objects, CellStyle only new objects, then clone, re-assignment; 
            direct assignment source CellStyle objects are not homologous reported abnormal 
        * / 
        CellStyle targetCellStyle = targetWorkBook.createCellStyle (); 
        targetCellStyle.cloneStyleFrom (sourceCellStyle); 
        targetCell.setCellStyle (targetCellStyle);

The cell types, obtaining a value corresponding to the type of

        // get a cell type, the formula in cell processing 
        the CellType cellTypeEnum = sourceCell.getCellTypeEnum ();
         Switch (cellTypeEnum) {
             Case STRING: 
                targetCell.setCellValue (sourceCell.getStringCellValue ()); 
                BREAK ;
             Case the NUMERIC:
                 IF (DateUtil.isCellDateFormatted ( sourceCell)) {
                     // date format value 
                    targetCell.setCellValue (sourceCell.getDateCellValue ()); 
                } the else { 
                    targetCell.setCellValue (sourceCell.getNumericCellValue ()); 
                } 
                BREAK;
             Case BOOLEAN: 
                targetCell.setCellValue (sourceCell.getBooleanCellValue ()); 
                BREAK ;
             Case the FORMULA:
                 // *** formula is obtained for a value of a cell is 
                the try { 
                    targetCell.setCellValue (sourceCell.getNumericCellValue ()); 
                } the catch (IllegalStateException E) { 
                    LOGGER.error ( "error cell formula: The formula is" + sourceCell.getCellFormula ()); 
                    targetCell.setCellValue ( "cell calculation error" ); 
                } 
                BREAK ;
             Case BLANK:
                break;
            case ERROR:
                targetCell.setCellValue(sourceCell.getErrorCellValue());
                break;
            case _NONE:
                break;
            default:
        }

 

The cell has a formula, the direct calculation code acquired calculator excel

// Get calculator 
FormulaEvaluator = formulaEvaluator . Wb.getCreationHelper () createFormulaEvaluator (); 

// calculate all cell values 
formulaEvaluator.evaluateAll ();

 

6. excel in the formula is dependent of other, a current calculator, excel other injection calculator

// Excel calculation dependent set 
the Map <String, FormulaEvaluator> = Workbooks new new the HashMap <> (); 

// put dependent calculator 
workbooks.put (v.getModelFileName (), targetWorkbook.getCreationHelper ( ) createFormulaEvaluator ().); 


// to the current setting depends calculator calculator 
formulaEvaluator formulaEvaluator = wb.getCreationHelper () createFormulaEvaluator ();. 
formulaEvaluator.setupReferencedWorkbooks (Workbooks); 

// calculator 
formulaEvaluator.evaluateAll ();