使用easypoi导入导出excel，SSM和SpringBoot通用代码

easypoi功能如同名字easy,主打的功能就是容易,让一个没见接触过poi的人员
就可以方便的写出Excel导出,Excel模板导出,Excel导入,Word模板导出,通过简单的注解和模板
语言(熟悉的表达式语法),完成以前复杂的写法
官网

功能介绍

Excel自适应xls和xlsx两种格式,word只支持docx模式

1.Excel导入

注解导入
Map导入
大数据量导入sax模式
导入文件保存
文件校验
字段校验

2.Excel导出

注解导出
模板导出
html导出

3.Excel转html

4.word导出

5.pdf导出

使用

如果你使用的Maven就引入以下坐标

        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-base</artifactId>
            <version>3.2.0</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-web</artifactId>
            <version>3.2.0</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-annotation</artifactId>
            <version>3.2.0</version>
        </dependency>

SpringBoot

     <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-spring-boot-starter</artifactId>
            <version>4.0.0</version>
        </dependency>

如果使用的普通项目，搜索easypoi下载对应jar
创建工具类 FileUtil

package com.zzidc.manager.util;

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;

/**
 * @Author: haohaowang
 * @Desc
 * @Date: 2019/3/25 10:26
 */
public class FileUtil {

    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<Map<String, Object>> 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<Map<String, Object>> list, String fileName, HttpServletResponse response) {
        Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
        if (workbook != null);
        downLoadExcel(fileName, response, workbook);
    }

    public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass){
        if (StringUtils.isBlank(filePath)){
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List<T> 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 <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass){
        if (file == null){
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List<T> 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());
        }
        return list;
    }
    public static <T> List<T> importExcels(MultipartFile file,  Class<T> pojoClass){
        if (file == null){
            return null;
        }
        ImportParams params = new ImportParams();

        List<T> 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());
        }
        return list;
    }
}

创建实体 Site

package com.zzidc.manager.dao.bean;

import cn.afterturn.easypoi.excel.annotation.Excel;

import java.util.Date;

public class Site {
    private String id;
    //name 列名,支持name_id,导入导出excel时的表头的名字
    //orderNum 列的排序,支持name_id
   //type 导出类型 1 是文本 2 是图片,3 是函数,10 是数字 默认是文本
    @Excel(name = "城市名称", orderNum = "0",type=10)
    private String cityName;

    private String cityType;
    @Excel(name = "负责人", orderNum = "0")
    private String sitePri;



    @Excel(name = "电话", orderNum = "0")
    private String phone;
    @Excel(name = "办公电话", orderNum = "0")
    private String workPhone;

    @Excel(name = "邮箱", orderNum = "0")
    private String email;

    private Date createTime;
    @Excel(name = "状态", replace = {"正常_true", "不可用_false"})
    private Boolean state;

    private Date updateTime;

    private String cityCode;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id == null ? null : id.trim();
    }

    public String getCityName() {
        return cityName;
    }

    public void setCityName(String cityName) {
        this.cityName = cityName == null ? null : cityName.trim();
    }

    public String getCityType() {
        return cityType;
    }

    public void setCityType(String cityType) {
        this.cityType = cityType == null ? null : cityType.trim();
    }

    public String getSitePri() {
        return sitePri;
    }

    public void setSitePri(String sitePri) {
        this.sitePri = sitePri == null ? null : sitePri.trim();
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone == null ? null : phone.trim();
    }

    public String getWorkPhone() {
        return workPhone;
    }

    public void setWorkPhone(String workPhone) {
        this.workPhone = workPhone == null ? null : workPhone.trim();
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email == null ? null : email.trim();
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    public Boolean getState() {
        return state;
    }

    public void setState(Boolean state) {
        this.state = state;
    }

    public Date getUpdateTime() {
        return updateTime;
    }

    public void setUpdateTime(Date updateTime) {
        this.updateTime = updateTime;
    }

    public String getCityCode() {
        return cityCode;
    }

    public void setCityCode(String cityCode) {
        this.cityCode = cityCode == null ? null : cityCode.trim();
    }
}

Controller层代码

  @RequestMapping("export")
    public void export(HttpServletResponse response){

        //模拟从数据库获取需要导出的数
        ResultUtil sites = siteService.getSites(1, 8, new Site());
        List data = (List) sites.getData();


        //导出操作 title带表的是表头就是第一行是标题，而不是表头。sheetName指的多sheet时的名字，设置为Null显示为sheet0，
        FileUtil.exportExcel(data,null,null,Site.class,"测站信息.xls",true,response);
    }

    @RequestMapping("importExcel")
    public void importExcel(MultipartFile file){
        //解析excel，titleRows指的是上面设置的title如果上面设置了，就要写成1代表第一行是标题，
        //写成0代表没有标题headerRows代表表头，当没有标题的时候这个数值设置成1代表第一行是表头，数据在第二行
        List<Site> siteList = FileUtil.importExcel(file,0,1,Site.class);
        for (Site site : siteList) {
        //设置id
            site.setId(UUIDGenerator.generate());
        }
        siteService.batSite(siteList);



        //TODO 保存数据库
    }

页面代码

使用的是layui
 <div class="layui-inline">
                <a class="layui-btn layui-btn-normal" href="/export">导出</a>
            </div>
            <button type="button" class="layui-btn" id="uploadExcel"><i class="layui-icon"></i>导入</button>
    //js
    upload.render({
                    elem: '#uploadExcel'
                    ,url: '/importExcel'
                    ,accept: 'file' //普通文件
                    ,multiple: true
                    ,done: function(res){
                        console.log(res);
                    }
                });

注解具体可用，如下