利用apache poi读取excel的一个小例子

把poi-2.5.1.jar poi-contrib-2.5.1.jar加到工程里面

package excel.read;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileInputStream;

public class ReadXL {
 /** Excel文件的存放位置。注意是正斜线 */
 public static String fileToBeRead = "E:/workspace/javaProject/excelPOI/JTest/workbook.xls";

 public static void main(String argv[]) {
  try {
   // 创建对Excel工作簿文件的引用
   HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileToBeRead));
   // 创建对工作表的引用。
   // 也可用getSheetAt(int index)按索引引用，
   // 在Excel文档中，第一张工作表的缺省索引是0，
   // 其语句为：HSSFSheet sheet = workbook.getSheetAt(0);
   // 读取左上端单元
   System.out.println("sheet数目： " + workbook.getNumberOfSheets());
   for (int i = 0; i < workbook.getNumberOfSheets(); i++) {//循环sheet
    System.out.println("==========开始第 "+i +" 个sheet============");
    HSSFSheet childSheet = workbook.getSheetAt(i);
    for(int r=0; r < childSheet.getPhysicalNumberOfRows(); r++) {//循环该 子sheet row
     System.out.println("childSheet " + (r+1) + "行数:: " + childSheet.getPhysicalNumberOfRows());
     System.out.println("childSheet 单元格的数目:: " + childSheet.getRow(r).getPhysicalNumberOfCells());
     for (short c = 0; c < childSheet.getRow(r).getPhysicalNumberOfCells(); c++) {//循环该子sheet行对应的单元格项
      HSSFCell cell = childSheet.getRow(r).getCell(c);
      System.out.println("cell:: " + cell);
      String value = null;
 
      if (cell == null)
       continue;
      System.out.println("cell.getCellType():: " + cell.getCellType());
      switch (cell.getCellType()) {
 
      case HSSFCell.CELL_TYPE_NUMERIC:
       value = "" + cell.getNumericCellValue();
       break;
 
      case HSSFCell.CELL_TYPE_STRING:
       value = cell.getStringCellValue();
       break;
      case HSSFCell.CELL_TYPE_BLANK:
       ;
          break;
      default:
      }
      System.out.println("value :: " + value);     
     }    
    }
   }
   //HSSFRow row = sheet.getRow(0);//行
   //HSSFCell cell = row.getCell((short) 0);//单元格
   // 输出单元内容，cell.getStringCellValue() 就是取所在单元的值   
  } catch (Exception e) {
   System.out.println("已运行xlRead() : " + e);
  }
 }
}