POI操作excel

package com.jie.java;

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

import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class ExcelRead {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		try{
			FileInputStream is = new FileInputStream(new File("c:/最终成绩.xls"));
			HSSFWorkbook wb=new HSSFWorkbook(is);
			
			int sheetNum=wb.getNumberOfSheets();
			
			for(int i=0;i<sheetNum;i++)
			{
				HSSFSheet childSheet = wb.getSheetAt(i);
				int rowNum = childSheet.getLastRowNum();
				
				for(int j=0;j<rowNum;j++)
				{
				    HSSFRow row = childSheet.getRow(j);	
				    int cellNum=row.getLastCellNum();
				    
				    for(int k=0;k<cellNum;k++)
				    {
				    	System.out.print(row.getCell(k).toString()+" ");
				    }
				    System.out.println();
				}
				
			}
		}catch(Exception e)
		{
			e.printStackTrace();
		}

	}

}

getNumberOfSheets() 获得Sheet总数

getLastRowNum()获得行总数

getLastCellNum()获得每行单元格总数

cell.getStringCellValue()   只能读字符串 
cell.getNumbericCellValue()   能读数值型，但读出来的数值有小数点，如123.0

if(cell.getCellType()==HSSFCell.CELL_TYPE_BLANK){//判断是否为空白单元格，很重要不然有空指针