Question

我想比较两个excel表并查找是否有任何行不同，如果有，我想将那个与excel不同的单行复制到新excel中的新行。下面是我从网上获取的代码片段，但尝试了但是如果我将现有excel的第10行（例如）复制到新excel的第一行，第1行被正确复制到新excel但是所有剩余的行中从第一个excel也被复制到新的。我认为问题在于我写入新excel的方式[workbook.write（out）]请帮助!!在此先感谢!!

    public class RowCopy {

public static void main(String[] args) throws Exception{
    HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream("c:/input.xls"));
    HSSFSheet sheet = workbook.getSheet("Sheet1");
    copyRow(workbook, sheet, 0, 1);
    FileOutputStream out = new FileOutputStream("c:/output.xls");
    workbook.write(out);
    out.close();
}

private static void copyRow(HSSFWorkbook workbook, HSSFSheet worksheet, int sourceRowNum, int destinationRowNum) {
    // Get the source / new row
    HSSFRow newRow = worksheet.getRow(destinationRowNum);
    HSSFRow sourceRow = worksheet.getRow(sourceRowNum);

    // If the row exist in destination, push down all rows by 1 else create a new row
    if (newRow != null) {
        worksheet.shiftRows(destinationRowNum, worksheet.getLastRowNum(), 1);
    } else {
        newRow = worksheet.createRow(destinationRowNum);
    }

    // Loop through source columns to add to new row
    for (int i = 0; i < sourceRow.getLastCellNum(); i++) {
        // Grab a copy of the old/new cell
        HSSFCell oldCell = sourceRow.getCell(i);
        HSSFCell newCell = newRow.createCell(i);

        // If the old cell is null jump to next cell
        if (oldCell == null) {
            newCell = null;
            continue;
        }

        // Copy style from old cell and apply to new cell
        HSSFCellStyle newCellStyle = workbook.createCellStyle();
        newCellStyle.cloneStyleFrom(oldCell.getCellStyle());
        ;
        newCell.setCellStyle(newCellStyle);

        // If there is a cell comment, copy
        if (oldCell.getCellComment() != null) {
            newCell.setCellComment(oldCell.getCellComment());
        }

        // If there is a cell hyperlink, copy
        if (oldCell.getHyperlink() != null) {
            newCell.setHyperlink(oldCell.getHyperlink());
        }

        // Set the cell data type
        newCell.setCellType(oldCell.getCellType());

        // Set the cell data value
        switch (oldCell.getCellType()) {
            case Cell.CELL_TYPE_BLANK:
                newCell.setCellValue(oldCell.getStringCellValue());
                break;
            case Cell.CELL_TYPE_BOOLEAN:
                newCell.setCellValue(oldCell.getBooleanCellValue());
                break;
            case Cell.CELL_TYPE_ERROR:
                newCell.setCellErrorValue(oldCell.getErrorCellValue());
                break;
            case Cell.CELL_TYPE_FORMULA:
                newCell.setCellFormula(oldCell.getCellFormula());
                break;
            case Cell.CELL_TYPE_NUMERIC:
                newCell.setCellValue(oldCell.getNumericCellValue());
                break;
            case Cell.CELL_TYPE_STRING:
                newCell.setCellValue(oldCell.getRichStringCellValue());
                break;
        }
    }
}

Answer 1

只需修改copyRow方法，添加参数HSSFSheet resultSheet，然后在方法中修改newRow变量即可从此resultSheet获取

private static void copyRow(HSSFWorkbook workbook, HSSFSheet worksheet, HSSFSheet resultSheet, int sourceRowNum, int destinationRowNum) {
    // Get the source / new row
    HSSFRow newRow = resultSheet.getRow(destinationRowNum);
    HSSFRow sourceRow = worksheet.getRow(sourceRowNum);

从目的地获取结果表＆＃34; output.xls＆＃34;

Answer 2

从一张纸复制到另一张

public static void copyFromSourceToDestinationRow(XSSFWorkbook workbook, XSSFSheet sourceWorksheet, int sourceRowNum, XSSFSheet destinationWorksheet, int destinationRowNum) {
        // Get the source / new row
        XSSFRow sourceRow = sourceWorksheet.getRow(sourceRowNum);
        XSSFRow newRow = destinationWorksheet.createRow(destinationRowNum);
        // Loop through source columns to add to new row
        for (int i = 0; i < sourceRow.getLastCellNum(); i++) {
            // Grab a copy of the old/new cell
            XSSFCell oldCell = sourceRow.getCell(i);
            XSSFCell newCell = newRow.createCell(i);
            // If the old cell is null jump to next cell
            if (oldCell == null) {
                continue;
            }

            // Copy style from old cell and apply to new cell
            XSSFCellStyle newCellStyle = workbook.createCellStyle();
            newCellStyle.cloneStyleFrom(oldCell.getCellStyle());
            newCell.setCellStyle(newCellStyle);

            // If there is a cell comment, copy
            if (oldCell.getCellComment() != null) {
                newCell.setCellComment(oldCell.getCellComment());
            }

            // If there is a cell hyperlink, copy
            if (oldCell.getHyperlink() != null) {
                newCell.setHyperlink(oldCell.getHyperlink());
            }

            // Set the cell data type
            newCell.setCellType(oldCell.getCellTypeEnum());

            // Set the cell data value
            switch (oldCell.getCellTypeEnum()) {
            case BLANK:// Cell.CELL_TYPE_BLANK:
                newCell.setCellValue(oldCell.getStringCellValue());
                break;
            case BOOLEAN:
                newCell.setCellValue(oldCell.getBooleanCellValue());
                break;
            case FORMULA:
                newCell.setCellFormula(oldCell.getCellFormula());
                break;
            case NUMERIC:
                newCell.setCellValue(oldCell.getNumericCellValue());
                break;
            case STRING:
                newCell.setCellValue(oldCell.getRichStringCellValue());
                break;
            default:
                break;
            }
        }

        // If there are are any merged regions in the source row, copy to new row
        for (int i = 0; i < sourceWorksheet.getNumMergedRegions(); i++) {
            CellRangeAddress cellRangeAddress = sourceWorksheet.getMergedRegion(i);
            if (cellRangeAddress.getFirstRow() == sourceRow.getRowNum()) {
                CellRangeAddress newCellRangeAddress = new CellRangeAddress(newRow.getRowNum(),
                        (newRow.getRowNum() + (cellRangeAddress.getLastRow() - cellRangeAddress.getFirstRow())),
                        cellRangeAddress.getFirstColumn(), cellRangeAddress.getLastColumn());
                destinationWorksheet.addMergedRegion(newCellRangeAddress);
            }
        }
    }

jar 文件 =-------

<dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.17</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.17</version>
        </dependency>

如何使用Apache POI将现有Excel工作表中的行复制到新的Excel工作表？

2 个答案: