POI数据导入

使用POI作数据导入首先须要添加POI依赖

<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi</artifactId>
      <version>3.9</version>
    </dependency>

      <!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
      <dependency>
          <groupId>org.apache.poi</groupId>
          <artifactId>poi-ooxml</artifactId>
          <version>3.9</version>
      </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml-schemas -->
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-ooxml-schemas</artifactId>
      <version>3.9</version>
    </dependency>

测试用例

package poitest;


import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.junit.Test;

import java.io.FileInputStream;

/**
 * @Author: mol
 * @Description:
 * @Date: create in 8:56 2018/3/15
 */
public class POITest {
    private String fileName = "E:\\corner\\下载 (12).xls";

    @Test
    public void testPOi()throws Exception{
        //判断文件是不是Excel表格
        if(fileName.endsWith(".xls") || fileName.endsWith(".xlsx")){
            //判断Excel版本
            boolean is03Excel = fileName.endsWith(".xls");
            FileInputStream fileInputStream = new FileInputStream(fileName);
            //根据不一样的版本建立对应的工做簿
            Workbook workbook = is03Excel?new HSSFWorkbook(fileInputStream):new XSSFWorkbook(fileInputStream);
            //根据下标获取工做表
            Sheet sheet = workbook.getSheetAt(0);
            //获取工做表最后一行的索引
            int lastRowNum = sheet.getLastRowNum();
            System.out.println(lastRowNum);
            //循环取出每一行
            for(int rowNum = 2;rowNum < sheet.getLastRowNum(); rowNum++){
               //获取当前索引行
               Row row = sheet.getRow(rowNum);
               //获取当前行中第一个单元格row.getCell(0)获取这个单元格的内容row.getCell(0).getStringCellValue()
               System.out.println("单位："+row.getCell(0).getStringCellValue());
               //Cell.CELL_TYPE_STRING将单元格的内容设为String类型 不然可能会报 Cannot get a text value from a numeric cell
               row.getCell(1).setCellType(Cell.CELL_TYPE_STRING);
               System.out.println("已导入学生人数："+row.getCell(1).getStringCellValue());
               row.getCell(2).setCellType(Cell.CELL_TYPE_STRING);
               System.out.println("考试人数："+row.getCell(2).getStringCellValue());
               row.getCell(3).setCellType(Cell.CELL_TYPE_STRING);
               System.out.println("学习人数："+row.getCell(3).getStringCellValue());
               row.getCell(4).setCellType(Cell.CELL_TYPE_STRING);
               System.out.println("及格率："+row.getCell(4).getStringCellValue());
           }
        }
    }



}