java- excel工具类（EasyPoi）
excel工具类
EasyPoi
1 导入依赖
<!-- EasyPoiUtil导入依赖-->
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-base</artifactId>
<version>4.1.0</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-web</artifactId>
<version>4.1.0</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-annotation</artifactId>
<version>4.1.0</version>
</dependency>
踩坑警告
如果项目中已经有其他excel工具类的依赖了，则把本依赖放到后面，
EasyPoiUtil的版本尽量选择新一些的，避免导入数据问题
2 工具类
import cn.afterturn.easypoi.cache.manager.POICacheManager;
import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.ExcelXorHtmlUtil;
import cn.afterturn.easypoi.excel.entity.ExcelToHtmlParams;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.TemplateExportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import cn.afterturn.easypoi.word.WordExportUtil;
import cn.afterturn.easypoi.word.parse.ParseWord07;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
/**
* Excel导入导出工具类
*/
public class ExcelUtils2 {
/**
* excel 导出
*
* @param list 数据列表
* @param fileName 导出时的excel名称
* @param response
*/
public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {
defaultExport(list, fileName, response);
}
/**
* 默认的 excel 导出
*
* @param list 数据列表
* @param fileName 导出时的excel名称
* @param response
*/
private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {
//把数据添加到excel表格中
Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
downLoadExcel(fileName, response, workbook);
}
/**
* excel 导出
*
* @param list 数据列表
* @param pojoClass pojo类型
* @param fileName 导出时的excel名称
* @param response
* @param exportParams 导出参数（标题、sheet名称、是否创建表头，表格类型）
*/
private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) throws IOException {
//把数据添加到excel表格中
Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);
downLoadExcel(fileName, response, workbook);
}
/**
* excel 导出
*
* @param list 数据列表
* @param pojoClass pojo类型
* @param fileName 导出时的excel名称
* @param exportParams 导出参数（标题、sheet名称、是否创建表头，表格类型）
* @param response
*/
public static void exportExcel(List<?> list, Class<?> pojoClass, String fileName, ExportParams exportParams, HttpServletResponse response) throws IOException {
defaultExport(list, pojoClass, fileName, response, exportParams);
}
/**
* excel 导出
*
* @param list 数据列表
* @param title 表格内数据标题
* @param sheetName sheet名称
* @param pojoClass pojo类型
* @param fileName 导出时的excel名称
* @param response
*/
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, HttpServletResponse response) throws IOException {
defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName, ExcelType.XSSF));
}
/**
* excel 导出
*
* @param list 数据列表
* @param title 表格内数据标题
* @param sheetName sheet名称
* @param pojoClass pojo类型
* @param fileName 导出时的excel名称
* @param isCreateHeader 是否创建表头
* @param response
*/
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, boolean isCreateHeader, HttpServletResponse response) throws IOException {
ExportParams exportParams = new ExportParams(title, sheetName, ExcelType.XSSF);
exportParams.setCreateHeadRows(isCreateHeader);
defaultExport(list, pojoClass, fileName, response, exportParams);
}
/**
* excel下载
*
* @param fileName 下载时的文件名称
* @param response
* @param workbook excel数据
*/
private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) throws IOException {
try {
response.setCharacterEncoding("UTF-8");
response.setHeader("content-Type", "application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName + ".xlsx", "UTF-8"));
workbook.write(response.getOutputStream());
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
/**
* excel 导入
*
* @param file excel文件
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(MultipartFile file, Class<T> pojoClass) throws IOException {
return importExcel(file, 1, 1, pojoClass);
}
/**
* excel 导入
*
* @param filePath excel文件路径
* @param titleRows 表格内数据标题行
* @param headerRows 表头行
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {
if (StringUtils.isBlank(filePath)) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
// params.setNeedSave(true); //不保存
params.setSaveUrl("/home/server/upload/excel/");
try {
return ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
} catch (NoSuchElementException e) {
throw new IOException("模板不能为空");
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
/**
* excel 导入
*
* @param file 上传的文件
* @param titleRows 表格内数据标题行
* @param headerRows 表头行
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {
if (file == null) {
return null;
}
try {
return importExcel(file.getInputStream(), titleRows, headerRows, pojoClass);
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
/**
* excel 导入
*
* @param inputStream 文件输入流
* @param titleRows 表格内数据标题行
* @param headerRows 表头行
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(InputStream inputStream, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {
if (inputStream == null) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
params.setSaveUrl("/home/server/upload/excel/");
// params.setNeedSave(true); //不保存
try {
return ExcelImportUtil.importExcel(inputStream, pojoClass, params);
} catch (NoSuchElementException e) {
throw new IOException("excel文件不能为空");
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
}
3 导入导出dto
package com.fongtech.cli.mbg.model.dto;
import cn.afterturn.easypoi.excel.annotation.Excel;
import com.fongtech.cli.framework.model.BaseModel;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import java.math.BigDecimal;
import java.util.Date;
/**
* @Author
* @Time 2020/11/3 0003
*/
@Data
@NoArgsConstructor
@EqualsAndHashCode(callSuper = false)
public class CommodityImportDTO extends BaseModel {
/**
* id
*/
@Excel(name = "id")
private Integer id;
/**
* image
*/
@Excel(name = "image")
private String image;
/**
* title
*/
@Excel(name = "title")
private String title;
/**
* asin
*/
@Excel(name = "asin")
private String asin;
/**
* storeName
*/
@Excel(name = "storeName")
private String storeName;
/**
* price
*/
@Excel(name = "price")
private String price;
/**
* currencySymbol
*/
@Excel(name = "currencySymbol")
private String currencySymbol;
/**
* country
*/
@Excel(name = "country")
private String country;
/**
* supportedReviewType
*/
@Excel(name = "supportedReviewType")
private String supportedReviewType;
/**
* startDate
*/
@Excel(name = "startDate")
private Date startDate;
/**
* endDate
*/
@Excel(name = "endDate")
private Date endDate;
/**
* dailyTotal
*/
@Excel(name = "dailyTotal")
private String dailyTotal;
/**
* total
*/
@Excel(name = "total")
private String total;
/**
* commission
*/
@Excel(name = "commission")
private String commission;
/**
* url
*/
@Excel(name = "url")
private String url;
/**
* productSpecification
*/
@Excel(name = "productSpecification")
private String productSpecification;
/**
* createdTime
*/
@Excel(name = "createTime")
private Date createdTime;
}
