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使用apache poi合并并对齐中心单元

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我想使用 Apache poi 将数据导出到Excel .
现在我遇到的问题是我无法合并行并将它们对齐在中心 .

出口数据代码是：

List<LinkedHashMap<String,Object>> lstReportHeader = null;
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet();

//Set Header Font
HSSFFont headerFont = wb.createFont();
headerFont.setBoldweight(headerFont.BOLDWEIGHT_BOLD);
headerFont.setFontHeightInPoints((short) 12);

//Set Header Style
CellStyle headerStyle = wb.createCellStyle();
headerStyle.setFillBackgroundColor(IndexedColors.BLACK.getIndex());
headerStyle.setAlignment(headerStyle.ALIGN_CENTER);
headerStyle.setFont(headerFont);
headerStyle.setBorderBottom(HSSFCellStyle.BORDER_MEDIUM);
int rowCount= 0;
Row header;
header = sheet.createRow(0);//its for header 
Cell cell ;//= header.createCell(0);
for(int j = 0;j < 4; j++) {
    cell = header.createCell(j);
    if(j == 0) {
        cell.setCellValue("ItemWise List");
    }
    cell.setCellStyle(headerStyle);
}
sheet.addMergedRegion(new CellRangeAddress(rowCount, rowCount, 0, lstReportFormHeader.size()-1));
header = sheet.createRow(0);
        cell = header.createCell(0);
cell.setCellValue("Sr. No");
        cell = header.createCell(1);
cell.setCellValue("Item Name");
        cell = header.createCell(2);
cell.setCellValue("Qty");
        cell = header.createCell(3);
cell.setCellValue("Rate");

现在我想 ItemWise List 合并并使其对齐中心 .

java excel apache-poi

8 回答

  • 3

    我的解决方案是按位置合并单元格，然后创建一个单元格（引用合并单元格的第一个块）来分配值，然后通过CellUtil设置对齐方式 .

    // Merges the cells
CellRangeAddress cellRangeAddress = new CellRangeAddress(start, start, j, j + 1);
sheet.addMergedRegion(cellRangeAddress);

// Creates the cell
Cell cell = CellUtil.createCell(row, j, entry.getKey());

// Sets the allignment to the created cell
CellUtil.setAlignment(cell, workbook, CellStyle.ALIGN_CENTER);
    回复于
  • 10

    合并:::

    Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet("new sheet");

Row row = sheet.createRow((short) 1);
Cell cell = row.createCell((short) 1);
cell.setCellValue("This is a test of merging");

sheet.addMergedRegion(new CellRangeAddress(
        1, //first row (0-based)
        1, //last row  (0-based)
        1, //first column (0-based)
        2  //last column  (0-based)
));

// Write the output to a file
FileOutputStream fileOut = new FileOutputStream("workbook.xls");
wb.write(fileOut);
fileOut.close();

    对齐也请查看Apache poi的以下官方链接:::

    http://poi.apache.org/spreadsheet/quick-guide.html#Alignment

    回复于
  • 15

    经过研究，我发现在合并7个单元格后，合并的单元格id将为0，因此我使用以下样式将以下样式应用于单元格ID 0 .

    headerStyle.setAlignment(headerStyle.ALIGN_CENTER);
    回复于
  • 2

    根据我的理解，您有合并的开始和结束单元格，并且您希望合并单元格范围并对齐单元格内容 . 如果我是对的，您可以使用以下方法：

    /**
 * @param startCell: first cell of merging area
 * @param endCell: last cell of merging area
 */

public static void mergeAndAlignCenter(HSSFCell startCell, HSSFCell endCell){
    //finding reference of start and end cell; will result like $A$1
    CellReference startCellRef= new CellReference(startCell.getRowIndex(),startCell.getColumnIndex());
    CellReference endCellRef = new CellReference(endCell.getRowIndex(),endCell.getColumnIndex());
    // forming string of references; will result like $A$1:$B$5 
    String cellRefernce = startCellRef.formatAsString()+":"+endCellRef.formatAsString();
    //removing $ to make cellRefernce like A1:B5
    cellRefernce = cellRefernce.replace("$","");
    //passing cellRefernce to make a region 
    CellRangeAddress region = CellRangeAddress.valueOf(cellRefernce);
    //use region to merge; though other method like sheet.addMergedRegion(new CellRangeAddress(1,1,4,1));
    // is also available, but facing some problem right now.
    startCell.getRow().getSheet().addMergedRegion( region );
    //setting alignment to center
    CellUtil.setAlignment(startCell, wb, CellStyle.ALIGN_CENTER);
}
    回复于
  • 2

    那么对我有用的是将所有合并的单元格'Cellstyle设置为CENTER ALIGN . 是否在将cellstyle值设置为center之前或之后放置XSSFSheet.addMergedRegion（）方法无关紧要 .

    private void insertXlsHeader(XSSFSheet sheet){
    ....
    //first cell for row1       
    cell = row1.createCell(colstart);
    cell.setCellType(org.apache.poi.ss.usermodel.Cell.CELL_TYPE_STRING);
    cell.setCellValue("COURSES");
    setHeaderCellStyle(sheet,cell);

    //first cell for row2
    cell = row2.createCell(colstart);
    setHeaderCellStyle(sheet,cell);

    //first cell for row3
    cell = row3.createCell(colstart);
    setHeaderCellStyle(sheet,cell);

    //merged the first cells of rows 1 to 3
    sheet.addMergedRegion(new CellRangeAddress(ROW1, ROW3, colstart, colstart));
    ...
    }

private void setHeaderCellStyle(XSSFSheet sheet,org.apache.poi.ss.usermodel.Cell cell) {
    CellStyle s = null;

        s = sheet.getWorkbook().createCellStyle();
        cell.setCellStyle(s);

    Font f = sheet.getWorkbook().createFont();

    f.setBoldweight(Font.BOLDWEIGHT_BOLD);


    s.setBorderBottom(CellStyle.BORDER_THIN);
    s.setBorderLeft(CellStyle.BORDER_THIN);
    s.setBorderRight(CellStyle.BORDER_THIN);
    s.setBorderTop(CellStyle.BORDER_THIN);
    s.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
    s.setAlignment(CellStyle.ALIGN_CENTER);
    s.setFont(f);

}
    回复于
  • 9

    如上所述，可以使用合并单元来实现

    sheet.addMergedRegion(new CellRangeAddress(frstRow, lastRow, firstColumnIndex, lastColumnIndex));

    但是为了垂直对齐细胞，最近我面临类似的问题，我尝试了上面的答案，但使用

    CellUtil.setAlignment(dataCell, workbook, CellStyle.VERTICAL_CENTER);

    对齐日期格式化单元格为水平左对齐 . 所以我使用以下方法仅设置Cell内容的Vertical Alignment .

    CellUtil.setCellStyleProperty(dataCell, workbook,CellUtil.VERTICAL_ALIGNMENT,CellStyle.VERTICAL_CENTER);

    我希望这有帮助！！

    Happy Coding

    回复于
  • 0

    这对我有用，我认为它更清洁：

    /**
 * Merge and center the cells specified by range
 * @param startCell the first cell in the cells to be merged
 * @param range the range of the cells to be merged
 */
private static void mergeAndCenter(Cell startCell, CellRangeAddress range) {
    startCell.getSheet().addMergedRegion(range);
    CellStyle style = startCell.getSheet().getWorkbook().createCellStyle();
    style.setAlignment(CellStyle.ALIGN_CENTER);
    style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
    startCell.setCellStyle(style);
}
    回复于
  • 3

    使用

    style.setVerticalAlignment()

    设置垂直对齐而不是

    style.setAlignment().
    回复于

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