SpringBoot集成EsayPoi实现Excel导入导出（非常简单非常简单）

1.导入jar包

    
        
            cn.afterturn
            easypoi-base
            3.0.3
        
        
            cn.afterturn
            easypoi-web
            3.0.3 
        
            cn.afterturn
            easypoi-annotation
            3.0.3
        
        
 
        
            commons-fileupload
            commons-fileupload
            1.3.1
        

2.导入工具类（官网和百度都有）

package com.zzf.finals.utiles;
 
import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.multipart.MultipartFile;
 
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
 
public class ExcelUtiles {
    public static void exportExcel(List list, String title, String sheetName, Class pojoClass,
                                   String fileName, boolean isCreateHeader, HttpServletResponse response){
        ExportParams exportParams = new ExportParams(title, sheetName);
        exportParams.setCreateHeadRows(isCreateHeader);
        defaultExport(list, pojoClass, fileName, response, exportParams);
    }
 
    public static void exportExcel(List list, String title, String sheetName, Class pojoClass,String fileName,
                                   HttpServletResponse response){
        defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName));
    }
 
    public static void exportExcel(List> list, String fileName, HttpServletResponse response){
        defaultExport(list, fileName, response);
    }
 
    private static void defaultExport(List list, Class pojoClass, String fileName,
                                      HttpServletResponse response, ExportParams exportParams) {
        Workbook workbook = ExcelExportUtil.exportExcel(exportParams,pojoClass,list);
        if (workbook != null); downLoadExcel(fileName, response, workbook);
    }
 
    private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) {
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("content-Type", "application/vnd.ms-excel");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
            workbook.write(response.getOutputStream());
        } catch (IOException e) {
            //throw new NormalException(e.getMessage());
        }
    }
 
    private static void defaultExport(List> list, String fileName, HttpServletResponse response) {
        Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
        if (workbook != null);
        downLoadExcel(fileName, response, workbook);
    }
 
    public static  List importExcel(String filePath,Integer titleRows,Integer headerRows, Class pojoClass){
        if (StringUtils.isBlank(filePath)){
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List list = null;
        try {
            list = ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
        }catch (NoSuchElementException e){
            //throw new NormalException("模板不能为空");
        } catch (Exception e) {
            e.printStackTrace();
            //throw new NormalException(e.getMessage());
        } return list;
    }
 
        public static  List importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class pojoClass){
        if (file == null){ return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List list = null;
        try {
            list = ExcelImportUtil.importExcel(file.getInputStream(), pojoClass, params);
        }catch (NoSuchElementException e){
           // throw new NormalException("excel文件不能为空");
        } catch (Exception e) {
            //throw new NormalException(e.getMessage());
            System.out.println(e.getMessage());
        }
        return list;
    }
 
}

3.编写实体映射类

package com.zzf.finals.entity;
 
import cn.afterturn.easypoi.excel.annotation.Excel;
import lombok.Data;
import org.springframework.format.annotation.DateTimeFormat;
 
import javax.persistence.*;
import java.util.Date;
 
@Entity
@Table(name = "seckill")
public class DemoExcel {
 
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Excel(name = "id" ,orderNum = "0")
    private Long seckillId;
 
    @Column(name = "name")
    @Excel(name = "姓名" ,orderNum = "1")
    private String name;
 
    @Column(name = "number")
    @Excel(name = "数量" ,orderNum = "2")
    private int number;
 
    @Column(name = "start_time")
    @Excel(name = "开始日期" ,orderNum = "3",importFormat = "yyyy-MM-dd HH:mm:ss")//exportFormat = "yyyy-MM-dd HH:mm:ss")
    private Date startTime;
 
    @Column(name = "end_time")
    @Excel(name = "结束日期" ,orderNum = "4",importFormat = "yyyy-MM-dd HH:mm:ss")//exportFormat = "yyyy-MM-dd HH:mm:ss")
    private Date endTime;
 
    @Column(name = "create_time")
    @Excel(name = "创建日期" ,orderNum = "5",importFormat = "yyyy-MM-dd HH:mm:ss")//exportFormat = "yyyy-MM-dd HH:mm:ss")
    private Date createTime;
 
    public Long getSeckillId() {
        return seckillId;
    }
 
    public void setSeckillId(Long seckillId) {
        this.seckillId = seckillId;
    }
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public int getNumber() {
        return number;
    }
 
    public void setNumber(int number) {
        this.number = number;
    }
 
    public Date getStartTime() {
        return startTime;
    }
 
    public void setStartTime(Date startTime) {
        this.startTime = startTime;
    }
 
    public Date getEndTime() {
        return endTime;
    }
 
    public void setEndTime(Date endTime) {
        this.endTime = endTime;
    }
 
    public Date getCreateTime() {
        return createTime;
    }
 
    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }
 
    @Override
    public String toString() {
        return "DemoExcel{" +
                "seckillId=" + seckillId +
                ", name='" + name + '\'' +
                ", number=" + number +
                ", startTime=" + startTime +
                ", endTime=" + endTime +
                ", createTime=" + createTime +
                '}';
    }
}

 

4.控制器代码

package com.zzf.finals.controller;
 
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.handler.inter.IExcelDataHandler;
import cn.afterturn.easypoi.util.PoiPublicUtil;
import com.zzf.finals.entity.DemoExcel;
import com.zzf.finals.repository.DemoExcelRepository;
import com.zzf.finals.service.DemoService;
import com.zzf.finals.utiles.ExcelUtiles;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
 
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.List;
import java.util.Map;
 
@RestController
@RequestMapping("/Excel")
public class ExcelController {
 
    @Autowired
    private DemoExcelRepository demoExcelRepository;
 
    @Autowired
    private DemoService demoService;
 
    @GetMapping("/export")
    public void export(HttpServletResponse response) {
        System.out.println(1);
//        模拟从数据库获取需要导出的数据
        List personList = demoExcelRepository.findAll();
//         导出操作
        ExcelUtiles.exportExcel(personList, "测试名", "什么名字", DemoExcel.class, "测试.xls", response);
 
    }
 
    @PostMapping("/importExcel2")
    public void importExcel2(@RequestParam("file") MultipartFile file) {
        ImportParams importParams = new ImportParams();
        // 数据处理
        importParams.setHeadRows(1);
        importParams.setTitleRows(1);
 
        // 需要验证
        importParams.setNeedVerfiy(true);
 
        try {
            ExcelImportResult result = ExcelImportUtil.importExcelMore(file.getInputStream(), DemoExcel.class,
                    importParams);
 
            List successList = result.getList();
            for (DemoExcel demoExcel : successList) {
              System.out.println(demoExcel);
            }
        } catch (IOException e) {
        } catch (Exception e) {
        }
    }
}
 
 
 

输入连接后如图所示。

导入后如：

最最最简单的导入导出就这么完成了。

参考博客：https://blog.csdn.net/qq_37598011/article/details/80918565?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param