合并多个excel工作簿
合并多个Excel工作簿,会出现电话号码以科学计数法显示,如果想要以字符串方式处理,要按如下完整代码
public static void mergeWorkBook() throws Exception { long startTime = System.currentTimeMillis(); //获取开始时间 String fromPath = "exceldoc\\cases";// excel存放路径 String toPath = "exceldoc/result/";// 保存新EXCEL路径 // 新的excel 文件名 String excelName = "汇总"; // 创建新的excel HSSFWorkbook wbCreat = new HSSFWorkbook(); File file = new File(fromPath); for (File excel : file.listFiles()) { // 打开已有的excel String strExcelPath = fromPath + "/" + excel.getName(); // input 来源 ,output 目的地 InputStream in = new FileInputStream(strExcelPath); HSSFWorkbook wb = new HSSFWorkbook(in); //获取工作簿的名称,不带前缀 String bookName = excel.getName().substring(0,excel.getName().lastIndexOf(".")); // i表示源工作簿 sheet 数量 int sheetnum = wb.getNumberOfSheets(); for (int i = 0; i < sheetnum; i++) { //开始每个表的处理 HSSFSheet sheet = wb.getSheetAt(i); // 目标工作簿创建同样的sheet名 String sheetName = sheet.getSheetName(); int firstRow = sheet.getFirstRowNum(); int lastRow = sheet.getLastRowNum(); System.out.println("workbook:"+bookName); System.out.println("sheetName:"+sheetName); //如果sheet的lastrow 是0 表示这个表没有内容,这张sheet就不用处理,继续处理下张sheet处理,用continue if(lastRow == 0 ){ continue; } HSSFSheet sheetCreat = wbCreat.createSheet(bookName +"_"+ sheet.getSheetName()); //开始多行的处理 for (int j = firstRow; j <= lastRow ; j++) { // 创建新建excel Sheet的行 HSSFRow rowCreat = sheetCreat.createRow(j); // 取得源有excel Sheet的行 HSSFRow row = sheet.getRow(j); // 单元格式样 //如果行的内容为null ,说明行为空行,此行就跳过,继续下行的处理,用continue if(null == row){ continue; } System.out.println("bookName:"+bookName+"|sheetName:"+sheetName+"|row:"+j); int lastCell = row.getLastCellNum(); int firstCell = row.getFirstCellNum(); for (int k = firstCell; k < lastCell && lastCell >0; k++) { String strVal =""; if (null != row.getCell(k)) { switch (row.getCell(k).getCellType()) { case HSSFCell.CELL_TYPE_NUMERIC: // 数字 DecimalFormat df = new DecimalFormat("#"); strVal = df.format(row.getCell(k).getNumericCellValue()); break; case HSSFCell.CELL_TYPE_STRING: // 字符串 strVal=row.getCell(k).getStringCellValue() + ""; break; case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean strVal= row.getCell(k).getBooleanCellValue()+ ""; break; case HSSFCell.CELL_TYPE_FORMULA: // 公式 strVal = row.getCell(k).getCellFormula() + ""; break; case HSSFCell.CELL_TYPE_BLANK: // 空值 strVal = ""; break; case HSSFCell.CELL_TYPE_ERROR: // 故障 System.out.println(i+ j + "CELL_TYPE_ERROR"); break; default: System.out.print(i+ j + "未知类型 "); break; } //System.out.println(strVal); rowCreat.createCell(k).setCellType(HSSFCell.CELL_TYPE_STRING);; rowCreat.getCell(k).setCellValue(strVal+""); } } System.out.println("单行处理完毕"); } System.out.println("多行处理完毕"); } System.out.println("多表处理完毕"); } System.out.println("多个文件处理完毕"); System.out.println(toPath + excelName + ".xls"); FileOutputStream fileOut = new FileOutputStream(toPath + excelName + ".xls"); wbCreat.write(fileOut); fileOut.close(); HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(toPath + excelName + ".xls")); System.out.println( workbook.getNumberOfSheets()); long endTime = System.currentTimeMillis(); //获取结束时间 System.out.println("程序运行时间:" + (endTime - startTime) + "ms"); //输出程序运行时间 }
主要是要读源文件时要对单元格进行判断
if (null != row.getCell(k)) { switch (row.getCell(k).getCellType()) { case HSSFCell.CELL_TYPE_NUMERIC: // 数字 DecimalFormat df = new DecimalFormat("#"); strVal = df.format(row.getCell(k).getNumericCellValue()); break; case HSSFCell.CELL_TYPE_STRING: // 字符串 strVal=row.getCell(k).getStringCellValue() + ""; break; case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean strVal= row.getCell(k).getBooleanCellValue()+ ""; break; case HSSFCell.CELL_TYPE_FORMULA: // 公式 strVal = row.getCell(k).getCellFormula() + ""; break; case HSSFCell.CELL_TYPE_BLANK: // 空值 strVal = ""; break; case HSSFCell.CELL_TYPE_ERROR: // 故障 System.out.println(i+ j + "CELL_TYPE_ERROR"); break; default: System.out.print(i+ j + "未知类型 "); break; } //System.out.println(strVal); rowCreat.createCell(k).setCellType(HSSFCell.CELL_TYPE_STRING);; rowCreat.getCell(k).setCellValue(strVal+""); }
再在写之前进行写单元格处理:
rowCreat.createCell(k).setCellType(HSSFCell.CELL_TYPE_STRING);;