阿里EasyExcel导入导出

前言

使用阿里提供的EasyExcel进行excel的导入导出简单，方便，快捷

一、使用版本

    <dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.2.6</version></dependency>

二、工具类

1.导出

package org.jeecg.modules.utils;import com.alibaba.excel.EasyExcelFactory;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.excel.metadata.BaseRowModel;
import com.alibaba.excel.metadata.Sheet;
import com.alibaba.excel.support.ExcelTypeEnum;
import com.alibaba.excel.util.CollectionUtils;
import lombok.Data;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;public class ExcelExportUtils {private static final Logger logger = LoggerFactory.getLogger(ExcelExportUtils.class);private static Sheet initSheet;static {initSheet = new Sheet(1, 0);initSheet.setSheetName("sheet");// 设置自适应宽度initSheet.setAutoWidth(Boolean.TRUE);}/*** 读取少于1000行数据** @param filePath 文件绝对路径* @return*/public static List<Object> readLessThan1000Row(String filePath) {return readLessThan1000RowBySheet(filePath, null);}/*** 读取少于1000行数据，带样式的** @param filePath 文件绝对路径* @param sheet* @return*/public static List<Object> readLessThan1000RowBySheet(String filePath, Sheet sheet) {//        if (!StringUtils.hasText(filePath)) {//            return null;
//        }sheet = sheet != null ? sheet : initSheet;InputStream inputStream = null;try {inputStream = new FileInputStream(filePath);return EasyExcelFactory.read(inputStream, sheet);} catch (FileNotFoundException e) {logger.error("找不到文件或者文件路径错误", e);} finally {try {if (inputStream != null) {inputStream.close();}} catch (IOException e) {logger.error("excel文件读取失败，失败原因：{}", e);}}return null;}/*** 读取大于1000行数据* @param filePath* @param sheet* @return*/public static List<Object> readMoreThan1000Row(String filePath, Sheet sheet) {return readMoreThan1000RowBySheet(filePath, null);}/*** 读取大于1000行数据* @param filePath* @param sheet* @return*/public static List<Object> readMoreThan1000RowBySheet(String filePath, Sheet sheet) {//        if (!StringUtils.hasText(filePath)) {//            return null;
//        }sheet = sheet != null ? sheet : initSheet;InputStream inputStream = null;try {inputStream = new FileInputStream(filePath);ExcelListener excelListener = new ExcelListener();EasyExcelFactory.readBySax(inputStream, sheet, excelListener);return excelListener.getDatas();} catch (FileNotFoundException e) {logger.error("找不到文件或者文件路径错误");} finally {try {if (inputStream != null) {inputStream.close();}} catch (IOException e) {logger.error("excel文件读取失败，失败原因：{}", e);}}return null;}/*** 导出单个sheet(自定义模板)* @param response* @param dataList* @param* @param fileName* @throws UnsupportedEncodingException*/
//    public static void writeExcelOneSheet(HttpServletResponse response, List<? extends BaseRowModel> dataList, String fileName,String template) throws UnsupportedEncodingException {//
//        try {//            String target = "attachment; filename=" + new String(
//                    (fileName + new SimpleDateFormat("yyyyMMdd").format(new Date()) + ExcelTypeEnum.XLSX.getValue()).getBytes("gb2312"), "ISO8859-1");
//            response.setContentType("multipart/form-data");
//            response.setCharacterEncoding("utf-8");
//            response.setContentType("application/vnd.ms-excel;charset=utf-8");
//            response.setHeader("Content-disposition", target);
//
//            ServletOutputStream out = response.getOutputStream();
//            //工作薄对象
//            ExcelWriter excelWriter = EasyExcel.write(out,SubjectReport.class).withTemplate(template).build();
//            //工作区对象
//            WriteSheet writeSheet = EasyExcel.writerSheet().build();
//            excelWriter.fill(dataList,writeSheet);
//            excelWriter.finish();
//        } catch (UnsupportedEncodingException e) {//            e.printStackTrace();
//        } catch (IOException e) {//            e.printStackTrace();
//        }
//
//    }/*** 导出单个sheet（自动成模板,自定义路径）*/public static void writeExcelOneSheet1(HttpServletResponse response, List<? extends BaseRowModel> dataList, Sheet sheet, String fileName,String path) throws UnsupportedEncodingException {if (CollectionUtils.isEmpty(dataList)) {return;}// 如果sheet为空，则使用默认的if (null == sheet) {sheet = initSheet;}try {String value = "attachment; filename=" + new String((fileName + new SimpleDateFormat("yyyyMMdd").format(new Date()) + ExcelTypeEnum.XLSX.getValue()).getBytes("gb2312"), "ISO8859-1");response.setContentType("multipart/form-data");response.setCharacterEncoding("utf-8");response.setContentType("application/vnd.ms-excel;charset=utf-8");response.setHeader("Content-disposition", value);FileOutputStream out = new FileOutputStream(path);//ServletOutputStream out = response.getOutputStream(path);ExcelWriter writer = EasyExcelFactory.getWriter(out, ExcelTypeEnum.XLSX, true);// 设置属性类sheet.setClazz(dataList.get(0).getClass());writer.write(dataList, sheet);writer.finish();out.flush();} catch (IOException e) {logger.error("导出失败，失败原因：{}", e);}}/*** 导出单个sheet（自动成模板,自定义路径）*/public static void writeExcelOneSheet2(HttpServletResponse response, List<? extends BaseRowModel> dataList, Sheet sheet, String fileName) throws UnsupportedEncodingException {if (CollectionUtils.isEmpty(dataList)) {return;}// 如果sheet为空，则使用默认的if (null == sheet) {sheet = initSheet;}try {String value = "attachment; filename=" + new String((fileName + new SimpleDateFormat("yyyyMMdd").format(new Date()) + ExcelTypeEnum.XLSX.getValue()).getBytes("gb2312"), "ISO8859-1");response.setContentType("multipart/form-data");response.setCharacterEncoding("utf-8");response.setContentType("application/vnd.ms-excel;charset=utf-8");response.setHeader("Content-disposition", value);//FileOutputStream out = new FileOutputStream(path);ServletOutputStream out = response.getOutputStream();ExcelWriter writer = EasyExcelFactory.getWriter(out, ExcelTypeEnum.XLSX, true);// 设置属性类sheet.setClazz(dataList.get(0).getClass());writer.write(dataList, sheet);writer.finish();out.flush();} catch (IOException e) {logger.error("导出失败，失败原因：{}", e);}}/*** @Author lockie* @Description 导出excel 支持一张表导出多个sheet* @Param OutputStream 输出流* Map<String, List>  sheetName和每个sheet的数据* ExcelTypeEnum 要导出的excel的类型 有ExcelTypeEnum.xls 和有ExcelTypeEnum.xlsx* @Date 上午12:16 2019/1/31*/
//    public static void writeExcelMutilSheet(HttpServletResponse response, Map<String, List<? extends BaseRowModel>> dataList, String fileName,String template) throws UnsupportedEncodingException {//        if (CollectionUtils.isEmpty(dataList)) {//            return;
//        }
//        try {//            String value = "attachment; filename=" + new String(
//                    (fileName + new SimpleDateFormat("yyyyMMdd").format(new Date()) + ExcelTypeEnum.XLSX.getValue()).getBytes("gb2312"), "ISO8859-1");
//            response.setContentType("multipart/form-data");
//            response.setCharacterEncoding("utf-8");
//            response.setContentType("application/vnd.ms-excel;charset=utf-8");
//            response.setHeader("Content-disposition", value);
//            ServletOutputStream out = response.getOutputStream();
//            //ExcelWriter writer = new ExcelWriter(out, ExcelTypeEnum.XLSX, true);
//            ExcelWriter writer = EasyExcel.write(out, BiFinanceFeeDetail.class).withTemplate(template).build();
//            // 设置多个sheet
//            setMutilSheet(dataList, writer);
//            writer.finish();
//            out.flush();
//        } catch (IOException e) {//            logger.error("导出异常", e);
//        }
//    }/*** @Author lockie* @Description 导出excel 支持一张表导出多个sheet* @Param OutputStream 输出流* Map<String, List>  sheetName和每个sheet的数据* ExcelTypeEnum 要导出的excel的类型 有ExcelTypeEnum.xls 和有ExcelTypeEnum.xlsx* @Date 上午12:16 2019/1/31*/public static void writeExcelMutilSheetNew(HttpServletResponse response, Map<String, List<? extends BaseRowModel>> dataList, String fileName) throws UnsupportedEncodingException {if (CollectionUtils.isEmpty(dataList)) {return;}try {String value = "attachment; filename=" + new String((fileName + new SimpleDateFormat("yyyyMMdd").format(new Date()) + ExcelTypeEnum.XLSX.getValue()).getBytes("gb2312"), "ISO8859-1");response.setContentType("multipart/form-data");response.setCharacterEncoding("utf-8");response.setContentType("application/vnd.ms-excel;charset=utf-8");response.setHeader("Content-disposition", value);ServletOutputStream out = response.getOutputStream();ExcelWriter writer = new ExcelWriter(out, ExcelTypeEnum.XLSX, true);//ExcelWriter writer = EasyExcel.write(out, BiFinanceFeeDetail.class).withTemplate(template).build();// 设置多个sheetsetMutilSheet(dataList, writer);writer.finish();out.flush();} catch (IOException e) {logger.error("导出异常", e);}}/*** @Author lockie* @Description //setSheet数据* @Date 上午12:39 2019/1/31*/private static void setMutilSheet(Map<String, List<? extends BaseRowModel>> dataList, ExcelWriter writer) {int sheetNum = 1;for (Map.Entry<String, List<? extends BaseRowModel>> stringListEntry : dataList.entrySet()) {Map columnWidth = new HashMap();columnWidth.put(0, 8000);Sheet sheet = new Sheet(sheetNum, 0, stringListEntry.getValue().get(0).getClass());sheet.setColumnWidthMap(columnWidth);sheet.setSheetName(stringListEntry.getKey());writer.write(stringListEntry.getValue(), sheet);sheetNum++;}}/*** test** @param args* @param response* @throws UnsupportedEncodingException*/public static void main(String[] args, HttpServletResponse response) throws UnsupportedEncodingException {// 导出多个sheet
//        List<OrderExportDTO> orderExportDTOList = new ArrayList<>();
//        Map<String, List<? extends BaseRowModel>> map = new HashMap<>();
//        map.put("自营订单", orderExportDTOList);
//        map.put("互联互通", orderExportDTOList);
//        String fileName = new String(("测试导出2019").getBytes(), "UTF-8");
//        writeExcelMutilSheet(response, map, fileName);// 导出单个sheet
//        writeExcelOneSheet(response, orderExportDTOList, null, fileName);}}

代码如下（示例）：

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns
import warnings
warnings.filterwarnings('ignore')
import  ssl
ssl._create_default_https_context = ssl._create_unverified_context

2.导入

package org.jeecg.modules.utils;import com.alibaba.excel.ExcelReader;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.metadata.BaseRowModel;
import com.alibaba.excel.metadata.Sheet;
import com.alibaba.excel.support.ExcelTypeEnum;
import org.springframework.web.multipart.MultipartFile;import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.List;public class ExcelImportUtil {/*** 读取 Excel(多个 sheet)** @param excel    文件* @param rowModel 实体类映射，继承 BaseRowModel 类* @return Excel 数据 list*/public static List<Object> readExcel(MultipartFile excel, BaseRowModel rowModel) throws Exception {ExcelListener excelListener = new ExcelListener();ExcelReader reader = getReader(excel, excelListener);if (reader == null) {return null;}for (Sheet sheet : reader.getSheets()) {if (rowModel != null) {sheet.setClazz(rowModel.getClass());}reader.read(sheet);}return excelListener.getDatas();}/*** 读取某个 sheet 的 Excel** @param excel    文件* @param rowModel 实体类映射，继承 BaseRowModel 类* @param sheetNo  sheet 的序号 从1开始* @return Excel 数据 list*/public static List<Object> readExcel(MultipartFile excel, BaseRowModel rowModel, int sheetNo) throws Exception {return readExcel(excel, rowModel, sheetNo, 1);}/*** 读取某个 sheet 的 Excel** @param excel       文件* @param rowModel    实体类映射，继承 BaseRowModel 类* @param sheetNo     sheet 的序号 从1开始* @param headLineNum 表头行数，默认为1* @return Excel 数据 list*/public static List<Object> readExcel(MultipartFile excel, BaseRowModel rowModel, int sheetNo,int headLineNum) throws Exception {ExcelListener excelListener = new ExcelListener();ExcelReader reader = getReader(excel, excelListener);if (reader == null) {return null;}reader.read(new Sheet(sheetNo, headLineNum, rowModel.getClass()));return excelListener.getDatas();}/*** 导出 Excel ：一个 sheet，带表头** @param response  HttpServletResponse* @param list      数据 list，每个元素为一个 BaseRowModel* @param fileName  导出的文件名* @param sheetName 导入文件的 sheet 名* @param object    映射实体类，Excel 模型*/public static void writeExcel(HttpServletResponse response, List<? extends BaseRowModel> list,String fileName, String sheetName, BaseRowModel object) {ExcelWriter writer = new ExcelWriter(getOutputStream(fileName, response), ExcelTypeEnum.XLSX);Sheet sheet = new Sheet(1, 0, object.getClass());sheet.setSheetName(sheetName);writer.write(list, sheet);writer.finish();}/*** 导出文件时为Writer生成OutputStream*/private static OutputStream getOutputStream(String fileName, HttpServletResponse response) {//创建本地文件String filePath = fileName + ".xlsx";File dbfFile = new File(filePath);try {if (!dbfFile.exists() || dbfFile.isDirectory()) {dbfFile.createNewFile();}fileName = new String(filePath.getBytes(), "ISO-8859-1");response.addHeader("Content-Disposition", "filename=" + fileName);return response.getOutputStream();} catch (IOException e) {e.printStackTrace();return null;}}/*** 返回 ExcelReader** @param excel         需要解析的 Excel 文件* @param excelListener new ExcelListener()*/private static ExcelReader getReader(MultipartFile excel,ExcelListener excelListener) throws Exception {String filename = excel.getOriginalFilename();if (filename == null || (!filename.toLowerCase().endsWith(".xls") && !filename.toLowerCase().endsWith(".xlsx"))) {throw new Exception("文件格式错误！");}InputStream inputStream;try {inputStream = new BufferedInputStream(excel.getInputStream());return new ExcelReader(inputStream, null, excelListener, true);} catch (IOException e) {e.printStackTrace();}return null;}}

3.监听

package org.jeecg.modules.utils;import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;import java.util.ArrayList;
import java.util.List;public class ExcelListener extends AnalysisEventListener {//自定义用于暂时存储data。//可以通过实例获取该值private List<Object> datas = new ArrayList<>();/*** 通过 AnalysisContext 对象还可以获取当前 sheet，当前行等数据*/@Overridepublic void invoke(Object object, AnalysisContext context) {//数据存储到list，供批量处理，或后续自己业务逻辑处理。datas.add(object);//根据业务自行 do somethingdoSomething();/*如数据过大，可以进行定量分批处理if(datas.size()<=100){datas.add(object);}else {doSomething();datas = new ArrayList<Object>();}*/}/*** 根据业务自行实现该方法*/private void doSomething() {}@Overridepublic void doAfterAllAnalysed(AnalysisContext context) {/*datas.clear();解析结束销毁不用的资源*/}public List<Object> getDatas() {return datas;}public void setDatas(List<Object> datas) {this.datas = datas;}
}

三、使用

需要相应的实体类，继承BaseRowModel，字段上加@ExcelProperty(value = “BG”,index = 0)

value和数据库字段一直，index代表在excel中的顺序
导入：

MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();MultipartFile file = fileMap.get("file");//获取上传文件对象List<Object> list = new ArrayList<>();try {list = ExcelImportUtil.readExcel(file,new EnergyAlertModel());} catch (Exception e) {e.printStackTrace();return Result.error("文件解析失败，请检查文件重新上传！");}

导出：

       try {//return super.exportXls(request, pmoBasicInformation, PmoBasicInformation.class, "项目基础信息表");// 设置列宽Map columnWidth = new HashMap();columnWidth.put(0, 8000);String fileName = "人力资源清单";List<PmoManpowerExcel> PmoManpowerExcelList = pmoManpowerService.exportXls();Sheet sheet1 = new Sheet(1, 0, PmoBasicInformationExcel.class);sheet1.setColumnWidthMap(columnWidth);sheet1.setSheetName(fileName);EasyExcelUtils.writeExcelOneSheet1(response,PmoManpowerExcelList,sheet1,fileName);} catch (Exception e) {throw new RuntimeException(e);}

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阿里EasyExcel导入导出

阿里EasyExcel导入导出

前言

一、使用版本

二、工具类

1.导出

2.导入

3.监听

三、使用

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