excel
此操作使用POI类库，请到以下URL下载：
http://apache.justdn.org/jakarta/poi/release/bin/poi-bin-
以下是源码：
package com.test;
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;
import java.io.FileInputStream;
import javax.swing.JOptionPane;
/**
* 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 POITest
{
public static String outputFile = "e:\\test.xls";
public static String fileToBeRead = "e:\\test.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("效益指标");
// 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("POI Excel Model");
//下一行
row=sheet.createRow( (short)1);
cell=row.createCell( (short)0);
//设置单元格内容
cell.setCellValue( "Powered by 夏天");
// 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);
}
}
public void readExcel()
{
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
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);
for(short cellNumOfRow = 0; cellNumOfRow <= aRow.getLastCellNum(); cellNumOfRow++)
{
if(null != aRow.getCell(cellNumOfRow))
{
HSSFCell aCell = aRow.getCell(cellNumOfRow);
System.out.println(aCell.getStringCellValue());
}
}
}
}
}
}
}
catch(Exception e)
{
System.out.println("ReadExcelError" + e);
}
}
public static void main(String[] args)
{
POITest poi = new POITest();
poi.createExcel();
JOptionPane.showMessageDialog(null,"文件写入成功","POI",1);
poi.readExcel();
JOptionPane.showMessageDialog(null,"文件读取成功","POI",1);
}
}
