利用Apache POI读取并解析Excel的数据

/*
 * Created on 2010-12-9
 * java读取excel文件
 *
 */
import java.io.FileInputStream;
import java.io.FileOutputStream;
//import java.text.DecimalFormat;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
/**
 *         java读取excel文件
 *         一个Excel文件的层次：Excel文件->工作表->行->单元格
 *         对应到POI中，为：workbook->sheet->row->cell
 *
 */
public class HelloWorld {
    public static String outputFile = "e:\\test\\tels.xls";
    public static String fileToBeRead = "e:\\src\\test1.xls";

    public void CreateExcel() {
        try {
            // 创建新的Excel 工作簿
            HSSFWorkbook workbook = new HSSFWorkbook();
            // 在Excel工作簿中建一工作表，其名为缺省值
            // 如要新建一名为"效益指标"的工作表，其语句为：
            // HSSFSheet sheet = workbook.createSheet("效益指标");
            HSSFSheet sheet = workbook.createSheet();
            // 在索引0的位置创建行（最顶端的行）
            HSSFRow row = sheet.createRow((short) 0);
            // 在索引0的位置创建单元格（左上端）
            HSSFCell cell = row.createCell((short) 0);
            // 定义单元格为字符串类型
            cell.setCellType(HSSFCell.CELL_TYPE_STRING);
            // 在单元格中输入一些内容
            //cell.setCellValue("sweater");
            // 新建一输出文件流
            FileOutputStream fOut = new FileOutputStream(outputFile);
            // 把相应的Excel 工作簿存盘
            workbook.write(fOut);
            fOut.flush();
            // 操作结束，关闭文件
            fOut.close();
            System.out.println("文件生成...");

        } catch (Exception e) {
            System.out.println("已运行 xlCreate() : " + e);
        }
    }

    /**
     *
     * 读取excel，遍历各个小格获取其中信息，并判断其是否是手机号码，并对正确的手机号码进行显示
     * 注意： 1.sheet， 以0开始，以workbook.getNumberOfSheets()-1结束
     * 2.row， 以0开始(getFirstRowNum)，以getLastRowNum结束
     * 3.cell，以0开始(getFirstCellNum)，以getLastCellNum结束, 结束的数目不知什么原因与显示的长度不同，
     * 可能会偏长
     *
     */
    public void readExcel() {
        // 将被表示成1.3922433397E10的手机号转化为13922433397,不一定是最好的转换方法
    //  DecimalFormat df = new DecimalFormat("#");
        try {
            // 创建对Excel工作簿文件的引用
            HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileToBeRead));
            // System.out
            // .println("===SheetsNum===" +
            // workbook.getNumberOfSheets());//获取sheet数
            int iSheetNum = workbook.getNumberOfSheets();
            for (int numSheets = 0; numSheets < iSheetNum; numSheets++) {
                if (null != workbook.getSheetAt(numSheets)) {
                    HSSFSheet aSheet = workbook.getSheetAt(numSheets);// 获得一个sheet
                    // System.out.println("+++getFirstRowNum+++" +
                    // aSheet.getFirstRowNum());//
                    // System.out.println("+++getLastRowNum+++" +
                    // aSheet.getLastRowNum());
                    int iRowNum = aSheet.getLastRowNum();
                    for (int rowNumOfSheet = 0; rowNumOfSheet <= iRowNum; rowNumOfSheet++) {
                        if (null != aSheet.getRow(rowNumOfSheet)) {
                            HSSFRow aRow = aSheet.getRow(rowNumOfSheet);

                            // System.out.println(">>>getFirstCellNum<<<"+
                            // aRow.getFirstCellNum());
                            // System.out.println(">>>getLastCellNum<<<"+
                            // aRow.getLastCellNum());
                            int iCellNum = aRow.getLastCellNum();
                            for (short cellNumOfRow = 0; cellNumOfRow < iCellNum; cellNumOfRow++) {

                                if (null != aRow.getCell(cellNumOfRow)) {
                                    HSSFCell aCell = aRow.getCell(cellNumOfRow);
                               
                                    int cellType = aCell.getCellType();
                                    // System.out.println(cellType);
                                    switch (cellType) {
                                    case 0:// Numeric
                                        //String strCell = String(aCell.getCellNum());
                                        short sCell = aCell.getCellNum();
                                        System.out.println(sCell);
                                        break;
                                    case 1:// String
                                        String strCell2 = aCell.getStringCellValue();
                                        System.out.println(strCell2);
                                        break;
                                    default:
                                        // System.out.println("格式不对不读");//其它格式的数据
                                        String strCell3 = aCell.getStringCellValue();
                                        System.out.println(strCell3);
                                    }
                                }
                            }
                        }
                    }
                }
            }

        } catch (Exception e) {
            System.out.println("ReadExcelError" + e);
        }
    }
    public static void main(String[] args) {
        HelloWorld poi = new HelloWorld();
        // poi.CreateExcel();
        poi.readExcel();
    }
}