场景:

在日常工作中，excel导入导出，是十分常见的，有两种主流的技术,一种是jxl,另一种是poi，而easypoi就是对poi进行了封装，使得导入导出变得更加的简单，阿里巴巴也有封装的工具名叫EasyExcel有兴趣的小伙伴可以研究一下，这里讲我比较喜欢的easypoi。

easypoi不适用于那种花里胡哨的excel表格。

maven导包:

pom文件配置如下:

<!--easypoi--><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>

封装的easypoi工具类:

package com.meeno.trainsys.util.easypoi.utils;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;/*** @description: easypoiUtils* @author: Wzq* @create: 2019-11-08 14:54*/
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<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());System.out.println(e.getMessage());}return list;}
}

excel对应模板的java实体类:

package com.meeno.trainsys.util.easypoi.model;import cn.afterturn.easypoi.excel.annotation.Excel;
import lombok.Data;/*** @description: 用户ExcelModel* @author: Wzq* @create: 2019-11-08 14:56*/
@Data
public class UserExcelModel {@Excel(name = "序号",orderNum = "0")private String number;@Excel(name = "名称",orderNum = "1")private String name;@Excel(name = "电话",orderNum = "2")private String phone;}

excel文件:

导入excel:

List<UserExcelModel> userExcelModels = ExcelUtiles.importExcel("E:\\test\\2.xlsx", 0, 1, UserExcelModel.class);System.out.println(userExcelModels.toString());

内置导出工具方法，傻瓜式调用即可！

ExcelUtiles.exportExce(...);

技术支持:高岳峰,闫宇峰,施凯雷,杨珂

他的个人博客地址:http://120.78.93.197/

这是我的公众号 有最新的it咨询,和个人工作的记录:

这是我的个人微信遇到问题欢迎，提问：

最后加上高质量的淘宝店:如有质量问题随时滴滴我，童叟无欺!