easypoi实现excel的导出、导入

easypoi实现excel的导出、导入

我之前一直用poi导入导出，写起来还是挺麻烦的，虽然可以粘贴复制相同代码，但是毕竟有好大一坨。

所以尝试用easypoi做excel的导入导出。闲言少叙，开始干活…………

第一步：导包

  <!--easypoi需要导包的-->
        <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>

第二步 写实体类，注解导入导出，实体类要写得无偏差（重点）

注解属性介绍：

name指定导出excel时生成的列名
orderNum可指定导出的该属性对应的所在列的位置
width设置单元格宽度
type设置导出类型 1是文本, 2是图片, 3是函数,10 数字 默认是文本
replace：值得替换 例：replace = {“身份证_1”} 数据库值为"1"，导出时会自动被"身份证"代
例如：@Excel(name=“证件类型”,replace = {“身份证_1”},orderNum = “1”)
/**
* 将Data日期导出为yyyy-MM-dd格式
* mergeVertical设置是否纵向合并列
* mergeRely设置合并列的前提条件，即:只有当索引为2的列(即:"性别"列)已经
* 合并了时，那么此时这一列的纵向相同时，才能纵向合并;如果引为2的
* 列(即:"性别"列)纵向数据不同，那么就算此列的纵向数据相同，那么
* 也不会合并
*/
@Excel(name=“入校时间”,mergeVertical = true,mergeRely = {2},format = “yyyy-MM-dd”,orderNum = “5”,width = 20)

package com.sinux.easypoi.entity;

import cn.afterturn.easypoi.excel.annotation.Excel;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @author Admin
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class NewExcelOperateEntity {
/**
 * @Excel注解的一些常用属性
 * name：列名
 * orderNum：第几列
 * replace：值得替换 例：replace = {"身份证_1"} 数据库值为"1"，导出时会自动被"身份证"代
 */
    @Excel(name="姓名",orderNum = "0")
    private String name;
    @Excel(name="证件类型",replace = {"身份证_1"},orderNum = "1")
    private String identifyType;
    @Excel(name = "证件号码", orderNum = "2")
    private String identifyNo;
    @Excel(name = "手机号1", orderNum = "3",mergeVertical = true)
    private String phoneA;
    @Excel(name = "手机号2", orderNum = "4",mergeVertical = true)
    private String phoneB;
    @Excel(name = "手机号3", orderNum = "5",mergeVertical = true)
    private String phoneC;
    @Excel(name = "固定电话", orderNum = "6",mergeVertical = true)
    private String telephone;
    @Excel(name = "电子邮箱", orderNum = "7",mergeVertical = true)
    private String email;
    @Excel(name = "身份证地址", orderNum = "8",mergeVertical = true)
    private String idcardAdress;
    @Excel(name = "户籍地址", orderNum = "9",mergeVertical = true)
    private String householdAddress;
    @Excel(name = "居住地址", orderNum = "10",mergeVertical = true)
    private String liveAddress;
    @Excel(name = "工作地址", orderNum = "11",mergeVertical = true)
    private String workAddress;
}

第三步：导出

 @GetMapping("/export")
    public void exportExcel(HttpServletResponse response){
        List<NewExcelOperateEntity> list = new ArrayList<>();
        NewExcelOperateEntity newExcelOperateEntity = null;
        Random random = new Random();
        //造数据
        for(int i=0;i<10;i++){
            newExcelOperateEntity = new NewExcelOperateEntity("姓名"+i,
                    "1",
                    random.nextInt(3)+i+"",
                    random.nextInt(3)+i+"",
                    random.nextInt(3)+i+"",
                    random.nextInt(3)+i+"",
                    "固定电话"+i,
                    "电子邮箱"+i,
                    "身份证地址"+i,
                    "户籍地址"+i,
                    "居住地址"+i,
                    "工作地址"+i);
            list.add(newExcelOperateEntity);
        }
        ExportParams exportParams = new ExportParams();
        exportParams.setSheetName("I am sheetName");
        Workbook workbook = ExcelExportUtil.exportExcel(exportParams,NewExcelOperateEntity.class,list);
        try {
            response.setHeader("content-Type", "application/vnd.ms-excel");
            // 下载文件的默认名称
            response.setHeader("Content-Disposition", "attachment;filename=" +
                    URLEncoder.encode("用户数据表","UTF-8") + "**.xlsx**");
            workbook.write(response.getOutputStream());

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

第四步：导入

 @RequestMapping("/import")
    public boolean importExcel(MultipartFile file){
        ImportParams importParams = new ImportParams();
        List<NewExcelOperateEntity> list = new ArrayList<>();
        try {
            list = ExcelImportUtil.importExcel(file.getInputStream(),NewExcelOperateEntity.class,importParams);
            for(NewExcelOperateEntity s : list){
                System.out.println(s);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return true;
    }