easyPOI 模板导出Excel
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
