简介

easypoi功能如同名字easy,主打的功能就是容易,让一个没见接触过poi的人员就可以方便的写出Excel导入,导出,通过简单的注解和模板语言(熟悉的表达式语法),完成以前复杂的写法。

集成

pom 中引入依赖即可

<!--easypoi--> <dependency> <groupId>cn.afterturn</groupId> <artifactId>easypoi-base</artifactId> <version>3.0.3</version> </dependency> <dependency> <groupId>cn.afterturn</groupId> <artifactId>easypoi-web</artifactId> <version>3.0.3</version> </dependency> <dependency> <groupId>cn.afterturn</groupId> <artifactId>easypoi-annotation</artifactId> <version>3.0.3</version> </dependency>

整合工具类 EasyPoiUtil

package cn.common.util;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 cn.common.exception.ZXException;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;/** * @author huangy * @date 2019/6/28 14:57 */public class EasyPoiUtil { /** * 导出Excel，包括文件名以及表名。是否创建表头 * * @param list 导出的实体类 * @param title 表头名称 * @param sheetName sheet表名 * @param pojoClass 映射的实体类 * @param isCreateHeader 是否创建表头 * @param fileName 文件名 * @param response * @return */ 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); } /** * 导出Excel 默认格式 默认有创建表头 */ 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)); } /** * map多sheet形式导出 * @param list * @param fileName * @param response */ public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response){ defaultExport(list, fileName, response); } /** * 常规默认导出方式 * @param list * @param pojoClass * @param fileName * @param response * @param exportParams */ private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) { Workbook workbook = ExcelExportUtil.exportExcel(exportParams,pojoClass,list); ExcelExportUtil.closeExportBigExcel(); if (workbook != null); downLoadExcel(fileName, response, workbook); } /** * 多sheet默认导出方式 * @param list * @param fileName * @param response */ private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) { Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF); ExcelExportUtil.closeExportBigExcel(); if (workbook != null); downLoadExcel(fileName, response, workbook); } /** * 下载excel * @param fileName * @param response * @param 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 ZXException(e.getMessage()); } } /** * 导入 文件路径形式 * @param filePath * @param titleRows * @param headerRows * @param pojoClass * @param <T> * @return */ 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 ZXException("模板不能为空"); } catch (Exception e) { e.printStackTrace(); throw new ZXException(e.getMessage()); } return list; } /** * 导入 MultipartFile 形式 * @param file * @param titleRows * @param headerRows * @param pojoClass * @param <T> * @return */ 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 ZXException("excel文件不能为空"); } catch (Exception e) { throw new ZXException(e.getMessage()); } return list; }}

使用示例

实体类

public class BlackListExport { @Excel(name = "客户姓名", width = 15, orderNum = "2") private String name; @Excel(name = "备注", width = 10, orderNum = "1") private String remark; @Excel(name = "手机号", width = 15, orderNum = "0") private String phone; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getRemark() { return remark; } public void setRemark(String remark) { this.remark = remark; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; } public BlackListExport() { } public BlackListExport(String name, String remark, String phone) { this.name = name; this.remark = remark; this.phone = phone; }}

接口

@ApiOperation(value = "easyPoiUtil 导出测试") @GetMapping(value = "/poi/export1") public void export1(HttpServletResponse response){ List<BlackListExport> list=new ArrayList<>(); for(int i=0;i<10000;i++){ list.add(new BlackListExport(i+"",i+"",i+"")); } EasyPoiUtil.exportExcel(list,"zx","huangy",BlackListExport.class,"zx.xls",response); } /** * 如果填充不同sheet得data数据列表使用相同得list对象进行填充的话， * 会出现第一次填充得sheet有数据，后续其他使用相同list对象进行data填充得sheet没有数据展示。 * @param response */ @ApiOperation(value = "多sheet 导出测试") @GetMapping(value = "/poi/export2") public void export2(HttpServletResponse response){ // 查询数据,此处省略 List list = new ArrayList<>(); list.add(new BlackListExport("姓名1","备注1","手机1")) ; list.add(new BlackListExport("姓名2","备注2","手机2")) ; list.add(new BlackListExport("姓名3","备注3","手机3")) ; List list2 = new ArrayList<>(); list2.add(new BlackListExport("姓名-1","备注-1","手机-1")) ; list2.add(new BlackListExport("姓名-2","备注-2","手机-2")) ; list2.add(new BlackListExport("姓名-3","备注-3","手机-3")) ; List<Map<String,Object>> sheetsList = new ArrayList<>(); for(int i=1;i<=4;i++){ // 设置导出配置 // 创建参数对象（用来设定excel得sheet得内容等信息） ExportParams params = new ExportParams() ; // 设置sheet得名称 params.setSheetName("表格"+i); //创建sheet使用的map Map<String,Object> dataMap = new HashMap<>(); // title的参数为ExportParams类型，目前仅仅在ExportParams中设置了sheetName dataMap.put("title",params) ; // 模版导出对应得实体类型 dataMap.put("entity",BlackListExport.class) ; // sheet中要填充得数据 if(i%2==0){ dataMap.put("data",list) ; }else { dataMap.put("data",list2) ; } sheetsList.add(dataMap); } EasyPoiUtil.exportExcel(sheetsList,"hy.xls",response); }

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