poi3.7处理excel文件
poi是apache下的一个开源处理excel的java框架
http://poi.apache.org/

下面是一个示例代码.

import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileOutputStream;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;public class TestExcel {public static void main(String[] args) throws Exception{HSSFWorkbook workbook = new HSSFWorkbook();HSSFSheet sheet = workbook.createSheet();workbook.setSheetName(0, "我的工作簿");HSSFRow row = sheet.createRow(0);HSSFCell cell;//写入2列的第一行cell = row.createCell(0);cell.setCellType(HSSFCell.CELL_TYPE_STRING);cell.setCellValue("第一列");cell = row.createCell(1);cell.setCellType(HSSFCell.CELL_TYPE_STRING);cell.setCellValue("第二列");//增加 第二行row = sheet.createRow(1);cell = row.createCell(0);cell.setCellType(HSSFCell.CELL_TYPE_STRING);cell.setCellValue("1");cell = row.createCell(1);cell.setCellType(HSSFCell.CELL_TYPE_STRING);cell.setCellValue("2");ByteArrayOutputStream baos = new ByteArrayOutputStream();workbook.write(baos);byte[] b = baos.toByteArray();File file= new File("c:/myExcel.xlsg");FileOutputStream fos = new FileOutputStream(file);fos.write(b);}}