easyPOI 模板导出Excel

程序员文章站 2022-06-24 23:54:01

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easyPOI 模板导出Excel

步骤：

步骤：

依赖引入

<!-- Easypoi Excel导入导出工具 -->
  <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>

导出工具类

package cn.afterturn.easypoi.excel;

import java.util.Collection;
import java.util.List;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.TemplateExportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import cn.afterturn.easypoi.excel.entity.params.ExcelExportEntity;
import cn.afterturn.easypoi.excel.export.ExcelBatchExportService;
import cn.afterturn.easypoi.excel.export.ExcelExportService;
import cn.afterturn.easypoi.excel.export.template.ExcelExportOfTemplateUtil;


public class ExcelExportUtil {

    private ExcelExportUtil() {
    }

    /**
     * @param entity
     *            表格标题属性
     * @param pojoClass
     *            Excel对象Class
     * @param dataSet
     *            Excel对象数据List
     */
    public static Workbook exportBigExcel(ExportParams entity, Class<?> pojoClass,
                                          Collection<?> dataSet) {
        ExcelBatchExportService batchService = ExcelBatchExportService
            .getExcelBatchExportService(entity, pojoClass);
        return batchService.appendData(dataSet);
    }

    public static Workbook exportBigExcel(ExportParams entity, List<ExcelExportEntity> excelParams,
                                          Collection<?> dataSet) {
        ExcelBatchExportService batchService = ExcelBatchExportService
            .getExcelBatchExportService(entity, excelParams);
        return batchService.appendData(dataSet);
    }

    public static void closeExportBigExcel() {
        ExcelBatchExportService batchService = ExcelBatchExportService.getCurrentExcelBatchExportService();
        if(batchService != null) {
            batchService.closeExportBigExcel();
        }
    }

    /**
     * @param entity
     *            表格标题属性
     * @param pojoClass
     *            Excel对象Class
     * @param dataSet
     *            Excel对象数据List
     */
    public static Workbook exportExcel(ExportParams entity, Class<?> pojoClass,
                                       Collection<?> dataSet) {
        Workbook workbook = getWorkbook(entity.getType(),dataSet.size());
        new ExcelExportService().createSheet(workbook, entity, pojoClass, dataSet);
        return workbook;
    }

    private static Workbook getWorkbook(ExcelType type, int size) {
        if (ExcelType.HSSF.equals(type)) {
            return new HSSFWorkbook();
        } else if (size < 100000) {
            return new XSSFWorkbook();
        } else {
            return new SXSSFWorkbook();
        }
    }

    /**
     * 根据Map创建对应的Excel
     * @param entity
     *            表格标题属性
     * @param entityList
     *            Map对象列表
     * @param dataSet
     *            Excel对象数据List
     */
    public static Workbook exportExcel(ExportParams entity, List<ExcelExportEntity> entityList,
                                       Collection<?> dataSet) {
        Workbook workbook = getWorkbook(entity.getType(),dataSet.size());;
        new ExcelExportService().createSheetForMap(workbook, entity, entityList, dataSet);
        return workbook;
    }

    /**
     * 一个excel 创建多个sheet
     * 
     * @param list
     *            多个Map key title 对应表格Title key entity 对应表格对应实体 key data
     *            Collection 数据
     * @return
     */
    public static Workbook exportExcel(List<Map<String, Object>> list, ExcelType type) {
        Workbook workbook = getWorkbook(type,0);
        for (Map<String, Object> map : list) {
            ExcelExportService service = new ExcelExportService();
            service.createSheet(workbook, (ExportParams) map.get("title"),
                (Class<?>) map.get("entity"), (Collection<?>) map.get("data"));
        }
        return workbook;
    }

    /**
     * 导出文件通过模板解析,不推荐这个了,推荐全部通过模板来执行处理
     * 
     * @param params
     *            导出参数类
     * @param pojoClass
     *            对应实体
     * @param dataSet
     *            实体集合
     * @param map
     *            模板集合
     * @return
     */
    @Deprecated
    public static Workbook exportExcel(TemplateExportParams params, Class<?> pojoClass,
                                       Collection<?> dataSet, Map<String, Object> map) {
        return new ExcelExportOfTemplateUtil().createExcleByTemplate(params, pojoClass, dataSet,
            map);
    }

    /**
     * 导出文件通过模板解析只有模板,没有集合
     * 
     * @param params
     *            导出参数类
     * @param map
     *            模板集合
     * @return
     */
    public static Workbook exportExcel(TemplateExportParams params, Map<String, Object> map) {
        return new ExcelExportOfTemplateUtil().createExcleByTemplate(params, null, null, map);
    }

    /**
     * 导出文件通过模板解析只有模板,没有集合
     * 每个sheet对应一个map,导出到处,key是sheet的NUM
     * @param params
     *            导出参数类
     * @param map
     *            模板集合
     * @return
     */
    public static Workbook exportExcel(Map<Integer, Map<String, Object>> map,
                                       TemplateExportParams params) {
        return new ExcelExportOfTemplateUtil().createExcleByTemplate(params, map);
    }

}

下载工具类

package com.hzrys.atplatform.finance.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;


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);
        }
    }

    public 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) {
            e.printStackTrace();
        }
    }
    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){
            //("模板不能为空");
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        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){
            //("excel文件不能为空");
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return list;
    }
}

3.Controller实现

	/**
     * 导出余额列表Excel
     *
     * @return
     */
    @GetMapping("api/finance/actbalance/excelexport")
    @ApiOperation(httpMethod = "GET", value = "导出余额列表Excel")
    public void actBalanceExcelExport(@Valid ActBalanceQryDto actBalanceQryDto, HttpServletResponse response) {
        TemplateExportParams params = new TemplateExportParams(actBalanceQryDto.isNumDisplay() ? "exceltemplate/科目余额表-数量.xls" : "exceltemplate/科目余额表.xls");
        //excel导出数据
        Map<String, Object> map = actBalanceService.actBalanceExcelExport(actBalanceQryDto);
        Workbook workbook = ExcelExportUtil.exportExcel(params, map);
        FileUtil.downLoadExcel("kmye.xls", response, workbook);
    }

xls模板单元格内容取自easyPOI命令
easyPOI 模板导出Excel

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easyPOI 模板导出Excel

easyPOI 模板导出Excel

步骤：

php 自定义函数实现将数据 以excel 表格形式导出示例

jsp利用POI生成Excel并在页面中导出的示例

超级简单POI多sheet导出Excel实战

用Simple Excel导出xls实现方法

java导出Excel通用方法的实例详解

UG8.0中的点坐标怎么导出到excel文件?

django admin后台添加导出excel功能示例代码

python将字典列表导出为Excel文件的方法

C#导入导出Excel数据的两种方法

Jsp中的table多表头导出excel文件具体实现

php 自定义函数实现将数据以excel 表格形式导出示例