使用POI组件操作Excel文档

import java.io.FileOutputStream;
import java.io.IOException;

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 WriteExcel {

public static void main(String[] args) throws Exception {
WriteExcel w = new WriteExcel();

w.writeExcel("1.xlsx");
}
public void writeExcel(String filename)throws IOException{

//创建一个新的Excel工作簿
HSSFWorkbook workbook = new HSSFWorkbook();

//在Excel表中新建一个工作表起名为java
HSSFSheet sheet = workbook.createSheet("java");

//创建第一行
HSSFRow row = sheet.createRow(0);

//创建第一列
HSSFCell cell = row.createCell((short)0);

//定义单元格为字符串类型
cell.setCellType(HSSFCell.CELL_TYPE_STRING);

//在单元格中输入内容
cell.setCellValue("作者");

//创建第二列
cell = row.createCell((short)1);

//定义单元格为字符串类型
cell.setCellType(HSSFCell.CELL_TYPE_STRING);

//在单元格中输入内容
cell.setCellValue("编辑");

//新建输出流
FileOutputStream fos = new FileOutputStream(filename);

//保存
workbook.write(fos);

//刷新
fos.flush();

//结束关闭
fos.close();
}

}

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

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 ReadExcel {

public static void main(String[] args) throws Exception {
ReadExcel r = new ReadExcel();

r.readExcel("1.xlsx");
}

public void readExcel(String fileName) throws FileNotFoundException, IOException{

HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileName));

//按照名字引用Excel表
HSSFSheet sheet = workbook.getSheet("java");
//也可以用以下方法获取Excel工作表，采用工作表的索引值
//HSSFSheet sheet = workbook.getSheetAt(0);

HSSFRow row = sheet.getRow(0);

HSSFCell cell = row.getCell((short)0);

//打印读取值
System.out.println(cell.getStringCellValue());

cell = row.getCell((short)1);

System.out.println(cell.getStringCellValue());
}
}