<em>JAVA</em>利用poi如何向<em>excel</em>已

有很多格式完全一样的百Excel文件，只是每个Excel里面有很过工作薄，而这些工作薄的数据格式都相同度，只是数据内容不同知。

我想实现的是这样的Excel有很多，我就是想把这些Excle里面的所以道数据都汇总在一个大的Excel里面，如果工作薄内的名字相同，那容么就在这同一个工作薄里面累数据就行....

HSSFWorkbook wb = new HSSFWorkbook();
zd HSSFSheet sheet = wb.createSheet("new sheet");

HSSFRow row = sheet.createRow((short) 1);
HSSFCell cell = row.createCell((short) 1);

HSSFRichTextString content = new HSSFRichTextString("This is a test of message");
cell.setCellValue(content);

sheet.addMergedRegion(new Region(1,(short)1,1,(short)2));

FileOutputStream fileOut = new FileOutputStream("d:/Demo_02_05.xls");
wb.write(fileOut);
fileOut.close();
/**
* 获取合并单元格的值e799bee5baa6e78988e69d83339
* @param sheet
* @param row
* @param column
* @return
*/
public String getMergedRegionValue(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();

for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress ca = sheet.getMergedRegion(i);
int firstColumn = ca.getFirstColumn();
int lastColumn = ca.getLastColumn();
int firstRow = ca.getFirstRow();
int lastRow = ca.getLastRow();

if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
Row fRow = sheet.getRow(firstRow);
Cell fCell = fRow.getCell(firstColumn);

return getCellValue(fCell);
}
}
}

return null;
}

利用java操作Excel源东东－jxl.jar读取前单元格值 String cellValue = cells[k].getContents(); sb.append(cellValue+" "); } } sb.append("
"); } sb.append("
"); } } //关闭资源释放内存 wb.close(); return sb.toString(); } 二.写入Excel文件格式比文本内容加粗加某些颜色等参考jxlapi同推荐篇错文章：/developerworks/cn/java/l-javaExcel/?ca=j-t10java 代码public static void writeExcel(String fileName){ WritableWorkbook wwb = null; try { //首先要使用Workbook类工厂创建写入工作薄(Workbook)象 wwb = Workbook.createWorkbook(new File(fileName)); } catch (IOException e) { e.printStackTrace(); } if(wwb!=null){ //创建写入工作表 //WorkbookcreateSheet两参数第工作表名称第二工作表工作薄位置 WritableSheet ws = wwb.createSheet("sheet1", 0); //面始添加单元格 for(int i=0;i0){ //每工作表进行循环 for(int i=0;iif(breakSheet) break; //前工作表行数 int rowNum = sheet[i].getRows(); boolean breakRow = false; for(int j=0;jif(breakRow) break; //前行所单元格 Cell[] cells = sheet[i].getRow(j); if(cells!=null&&cells.length>0){ boolean breakCell = false; //每单元格进行循环 for(int k=0;kif(breakCell) break; //读取前单元格值 String cellValue = cells[k].getContents(); if(cellValue==null) continue; if(cellValue.contains(keyWord)){ res = true; breakCell = true; breakRow = true; breakSheet = true; } } } } } } //关闭资源释放内存 wb.close(); return res; } 四.往Excel插入图片图标插入图片实现容易参看代码：java 代码public static void insertImg(WritableSheet dataSheet, int col, int row, int width, int height, File imgFile){ WritableImage img = new WritableImage(col, row, width, height, imgFile); dataSheet.addImage(img); } 代码注释已经清楚概用再解释我用程序验证：java 代码try { //创建工作薄 WritableWorkbook workbook = Workbook.createWorkbook(new File("D:/test1.xls")); //待插入工作表 WritableSheet imgSheet = workbook.createSheet("Images",0); //要插入图片文件 File imgFile = new File("D:/1.png"); //图片插入第二行第单元格宽各占六单元格 insertImg(imgSheet,0,1,6,6,imgFile); workbook.write(); workbook.close(); catch (IOException e) { e.printStackTrace(); catch (WriteException e) { e.printStackTrace(); jxl支持png格式图片jpg格式gif格式都支持五.插入页眉页脚e799bee5baa6e997aee7ad94e78988e69d83330般页眉页脚都三部,左,,右三部,利用代码实现插入页眉页脚java 代码public static void setHeader(WritableSheet dataSheet,String left,String center,String right){ HeaderFooter hf = new HeaderFooter(); hf.getLeft().append(left); hf.getCentre().append(center); hf.getRight().append(right); //加入页眉 dataSheet.getSettings().setHeader(hf); //加入页脚 //dataSheet.getSettings().setFooter(hf); } 我用代码测试该:java 代码try { //创建工作薄 WritableWorkbook workbook = Workbook.createWorkbook(new File("D:/test1.xls")); //待插入工作表 WritableSheet dataSheet = workbook.createSheet("加入页眉",0); ExcelUtils.setHeader(dataSheet, "chb", "2007-03-06", "第1页,共3页"); workbook.write(); workbook.close(); } catch (IOException e) { e.printStackTrace(); } catch (WriteException e) { e.printStackTrace(); } } 合并单元格：//首先创建sheetWritableSheet sheetWrite=writeWorkbook.createSheet("sheet名称",0);// 单元格（column, row）单元格（column1, row1）进行合并sheetWrite.mergeCells(column, row, column1, row1);java 操作exceljxl加边框jxl合并单元格,单元格设置单元WritableCellFormat headerFormat = new WritableCellFormat(HEADER_FONT_STYLE);//水平居齐headerFormat.setAlignment(Alignment.CENTRE);//竖直向居齐headerFormat.setVerticalAlignment(VerticalAlignment.CENTRE);//建立标签参数依：列索引、行索引、内容、格式Label seqLabel = new Label(0, 0, "序号", headerFormat);//增加单元格sheet.addCell(seqLabel);//合并单元格参数依：列索引、行索引、列索引+需要合并列数、行索引+需要合并行数sheet.mergeCells(0, 0, 0, 1);//设置单元格宽度字符单位sheet.setColumnView(0, "序号".length() + 10);Label basicInfoLabel = new Label(1, 0, "基本信息",headerFormat);sheet.addCell(basicInfoLabel);sheet.mergeCells(1, 0, 3, 0);//合并垮3行sheet.mergeCells(1, 1, 1, 3);//合并垮3列label = new Label(0, 1, "苹);sheet.mergeCells(0,1, 0, 3- 1);//合并垮3列WritableCellFormat cellFormat = new WritableCellFormat();cellFormat.setVerticalAlignment(VerticalAlignment.CENTRE);// 垂直居label.setCellFormat(cellFormat);sheet.addCell(label);注：再使cellFormat需要重新NEW WritableCellFormatjava怎么操作excel合并单元格