java 读取excel文件内容

需要下载 POI jar包

POI 下载


下载后解压再导包即可。

package com.qzh.work;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;

public class text1 {
    private static List readExcel(String str) throws FileNotFoundException, IOException {
        File file = new File(str);
        XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(file));
        Sheet sheet = workbook.getSheetAt(0);//读取第一个 sheet
        //System.out.println(sheet);
        List list = new ArrayList<>();
        Row row = null;
        int rowCount = sheet.getPhysicalNumberOfRows();//获得行总数
        //逐行处理 excel 数据
        for (int i = 0; i < rowCount; i++) {
            row = sheet.getRow(i);
            if (row != null) {
                int coloumNum =sheet.getRow(0).getPhysicalNumberOfCells();//获得咧总数
                Vector v=new Vector();
                for(int j=0;j<coloumNum;j++){
                    Cell cell=row.getCell(j);
                    cell.setCellType(CellType.STRING);//被每一个单元格都设置为String类型
                    v.add(cell.getStringCellValue());//接入Vector容器
                }
                list.add(v);//再加入列表
            }
        }
        workbook.close();
        return list;//list存放文件内的全部文件
    }
    public static void main(String[] args) throws IOException {
        readExcel("/*文件路径*/");
    }
}