Excel 讀取，POI

讀取excel數據

package com.zy.poi;

import org.apache.poi.hssf.usermodel.*;


import java.io.FileInputStream;

public class Test03 {
    //讀取
    public static void main(String[] args) throws Exception {
        //獲取流
        FileInputStream fileInputStream = new FileInputStream("C:\\Users\\Administrator\\Desktop\\aaa111.xls");
        //流轉爲hssfwork 對象
        HSSFWorkbook hssfWorkbook = new HSSFWorkbook(fileInputStream);
        HSSFSheet sheet1 = hssfWorkbook.getSheet("sheet1");
        HSSFRow row = sheet1.getRow(2);
        HSSFCell cell = row.getCell(3);
        String stringCellValue = cell.getStringCellValue();
        System.out.println(stringCellValue);

    }

}

 

寫數據到Excel

package com.zy.poi;

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.FileOutputStream;

public class Test02 {
    public static void main(String[] args) throws Exception {
        HSSFWorkbook hssfWorkbook = new HSSFWorkbook();
        //創建表sheet01
        HSSFSheet sheet01 = hssfWorkbook.createSheet("sheet01");
        //創建行row
        HSSFRow row = sheet01.createRow(1);
        //創建列對應的cell
        HSSFCell cell = row.createCell(2);
        //爲cell添加內容
        cell.setCellValue("天下興亡，匹夫有責");
        FileOutputStream fileOutputStream = new FileOutputStream("C:\\Users\\Administrator\\Desktop\\aaa111.xls");
        hssfWorkbook.write(fileOutputStream);
        System.out.println("成功");
        fileOutputStream.close();
    }
}