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*/@Deprecatedpublic 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

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easyPOI 模板导出Excel

easyPOI 模板导出Excel

步骤：

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