JAVA读取EXCEL

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;

import org.apache.poi.hwpf.extractor.WordExtractor;
import   org.apache.poi.hssf.usermodel.HSSFWorkbook;
import   org.apache.poi.hssf.usermodel.HSSFSheet;
import   org.apache.poi.hssf.usermodel.HSSFRow;
import   org.apache.poi.hssf.usermodel.HSSFCell;

import java.io.File;
import java.io.InputStream;
import java.io.FileInputStream;

import com.search.code.Index;

public Document getDocument(Index index, String url, String title, InputStream is) throws DocCenterException ...{
   StringBuffer content = new StringBuffer();
  try...{
    HSSFWorkbook   workbook  =  new   HSSFWorkbook(is);//创建对Excel工作簿文件的引用
   for (int numSheets = 0; numSheets < workbook.getNumberOfSheets(); numSheets++) ...{
    if (null != workbook.getSheetAt(numSheets)) ...{
      HSSFSheet aSheet = workbook.getSheetAt(numSheets);//获得一个sheet
        for (int rowNumOfSheet = 0; rowNumOfSheet <= aSheet.getLastRowNum(); rowNumOfSheet++) ...{
         if (null != aSheet.getRow(rowNumOfSheet)) ...{
           HSSFRow aRow = aSheet.getRow(rowNumOfSheet); //获得一个行
          for (short cellNumOfRow = 0; cellNumOfRow <= aRow.getLastCellNum(); cellNumOfRow++) ...{
           if (null != aRow.getCell(cellNumOfRow)) ...{
             HSSFCell aCell = aRow.getCell(cellNumOfRow);//获得列值
             content.append(aCell.getStringCellValue());
            }
           }
          }
         }
     }
    }
   if(!content.equals(""))...{
     index.AddIndex(url, title, content.toString());
    }
   }catch (DocCenterException e) ...{

   throw new DocCenterException("无法从该Mocriosoft Word文档中提取内容", e);
   }catch(Exception   e)  ...{
    System.out.println("已运行xlRead()   :  "  +   e   );
   }
  return null;
}