<!--xls(03)-->

        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi</artifactId>

            <version>3.9</version>

        </dependency>

 <!--xlsx(07)-->

        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi-ooxml</artifactId>

            <version>3.9</version>

        </dependency>

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

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

import org.joda.time.DateTime;

import org.junit.Test;

import java.io.FileInputStream;

import java.io.FileOutputStream;

public class poi2 {

    String PATH = "D:\\test\\";

    /**
     * 写工作簿
     */
    @Test
    public void Write03() throws Exception {
        //1.创建工作簿
        //03版本
        Workbook workbook = new HSSFWorkbook();
        //07版本
//        Workbook workbook = new XSSFWorkbook();

        //2.创建 工作表
        Sheet sheet = workbook.createSheet("poi技术测试表");
        for (int i = 0; i < 100; i++) {
            //3.创建行
            Row row1 = sheet.createRow(i);
            //4.创建单元格
            for (int j = 0; j < 10; j++) {
                Cell cell11 = row1.createCell(j);
                cell11.setCellValue("row"+ i + " 00" + (j+1));
            }
        }

        //生成一张表(IO流)
        // 03版本以xls结尾
        FileOutputStream fos = new FileOutputStream(PATH + "poi技术测试表.xls");
        //07版本就是使用xlsx结尾
//        FileOutputStream fos = new FileOutputStream(PATH + "poi技术测试表.xlsx");

        //输出
        workbook.write(fos);
        //关闭流
        fos.close();
        System.out.println("文件生成完毕");
    }

    /**
     * 读工作簿
     */
    @Test
    public  void Read03() throws Exception{
        //1.获取文件
        // 03版本
        FileInputStream fis = new FileInputStream(PATH+"poi技术测试表.xls");
        //07版本
//        FileInputStream fis = new FileInputStream(PATH+"poi技术测试表.xlsx");

        //2.创建一个工作簿。使用excel能操作的这边都可以操作！
        Workbook workbook = new HSSFWorkbook(fis);
        //07版本
//        Workbook workbook = new XSSFWorkbook(fis);

        //3.获取表
        Sheet sheet = workbook.getSheetAt(0);
        //当前表中有多少行
        int rowCount = sheet.getPhysicalNumberOfRows();
        for (int i = 0; i < rowCount; i++) {
            //4.获取行
            Row row1 = sheet.getRow(i);
            //当前行中有多少列
            int cellCount = row1.getPhysicalNumberOfCells();
            for (int j = 0; j < cellCount; j++) {
                //5.获取列
                Cell cell1 = row1.getCell(j);
                //6.获取行列的值
                String stringCellValue = cell1.getStringCellValue();
                System.out.println(stringCellValue);
            }
        }

        fis.close();
    }

}