Springboot+Poi实现Excel的导入导出

Springboot+Poi实现Excel的导入导出目录POI操作ExcelEasyPOI操作Excel解决不同浏览器导出excel中文名称乱码问题使用POI将HTMLTable导出ExcelPOI操作Excel一、poi简介ApachePOI是Apache软件基金会的开放源码函式库,POI提供API给Java程序对MicrosoftOffice格式档案读和写的功能。1、HSSF:HSSF…

目录

POI操作Excel

EasyPOI操作Excel

解决不同浏览器导出excel中文名称乱码问题

使用POI将HTML Table导出Excel


代码:https://gitee.com/typ1805/springboot-master

POI操作Excel

一、poi简介

          Apache POI是Apache软件基金会的开放源码函式库,POI提供API给Java程序对Microsoft Office格式档案读和写的功能。

1、HSSF:HSSF 是Horrible SpreadSheet Format的缩写,通过HSSF,你可以用纯Java代码来读取、写入、修改Excel文件。HSSF 为读取操作提供了两类API:usermodel和eventusermodel,即“用户模型”和“事件-用户模型”。

2、POI EXCEL文档结构类

  • HSSFWorkbook excel文档对象
  • HSSFSheet excel的sheet HSSFRow excel的行
  • HSSFCell excel的单元格 HSSFFont excel字体
  • HSSFName 名称 HSSFDataFormat 日期格式
  • HSSFHeader sheet头
  • HSSFFooter sheet尾
  • HSSFCellStyle cell样式
  • HSSFDateUtil 日期
  • HSSFPrintSetup 打印
  • HSSFErrorConstants 错误信息表

3、导入Excel常用的方法:

  • POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(“d:/test.xls”));    
  • HSSFWorkbook wb = new HSSFWorkbook(fs);  //得到Excel工作簿对象   
  • HSSFSheet sheet = wb.getSheetAt(0);   //得到Excel工作表对象   
  • HSSFRow row = sheet.getRow(i);  //得到Excel工作表的行   
  • HSSFCell cell = row.getCell((short) j);  //得到Excel工作表指定行的单元格 
  • cellStyle = cell.getCellStyle();  //得到单元格样式  

4、导出Excel常用的方法:

  • HSSFWorkbook wb = new HSSFWorkbook();  //创建Excel工作簿对象   
  • HSSFSheet sheet = wb.createSheet(“new sheet”);  //创建Excel工作表对象     
  • HSSFRow row = sheet.createRow((short)0);  //创建Excel工作表的行   
  • cellStyle = wb.createCellStyle();  //创建单元格样式   
  • row.createCell((short)0).setCellStyle(cellStyle);  //创建Excel工作表指定行的单元格   
  • row.createCell((short)0).setCellValue(1);  //设置Excel工作表的值  

二、springboot整合poi

    主要是springboot+myBatis+poi+mysql的简单应用,从数据库查询到结果集导出excel到本地,从本地中的excel文件导入到数据库表中。

1、添加依赖

<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi</artifactId>
			<version>RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
			<version>RELEASE</version>
		</dependency>

2、创建一个ExcelUtil类,这里的实现比较简单

package com.example.demo.utils;

import com.example.demo.entity.ExcelData;
import com.example.demo.entity.User;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.*;

import javax.servlet.http.HttpServletResponse;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import static org.apache.poi.ss.usermodel.CellType.*;

/**
 * 路径:com.example.demo.utils
 * 类名:
 * 功能:导入导出
 * 备注:
 * 创建人:typ
 * 创建时间:2018/10/19 11:21
 * 修改人:
 * 修改备注:
 * 修改时间:
 */
@Slf4j
public class ExcelUtil {

    /**
     * 方法名:exportExcel
     * 功能:导出Excel
     * 描述:
     * 创建人:typ
     * 创建时间:2018/10/19 16:00
     * 修改人:
     * 修改描述:
     * 修改时间:
     */
    public static void exportExcel(HttpServletResponse response, ExcelData data) {
        log.info("导出解析开始,fileName:{}",data.getFileName());
        try {
            //实例化HSSFWorkbook
            HSSFWorkbook workbook = new HSSFWorkbook();
            //创建一个Excel表单,参数为sheet的名字
            HSSFSheet sheet = workbook.createSheet("sheet");
            //设置表头
            setTitle(workbook, sheet, data.getHead());
            //设置单元格并赋值
            setData(sheet, data.getData());
            //设置浏览器下载
            setBrowser(response, workbook, data.getFileName());
            log.info("导出解析成功!");
        } catch (Exception e) {
            log.info("导出解析失败!");
            e.printStackTrace();
        }
    }

    /**
     * 方法名:setTitle
     * 功能:设置表头
     * 描述:
     * 创建人:typ
     * 创建时间:2018/10/19 10:20
     * 修改人:
     * 修改描述:
     * 修改时间:
     */
    private static void setTitle(HSSFWorkbook workbook, HSSFSheet sheet, String[] str) {
        try {
            HSSFRow row = sheet.createRow(0);
            //设置列宽,setColumnWidth的第二个参数要乘以256,这个参数的单位是1/256个字符宽度
            for (int i = 0; i <= str.length; i++) {
                sheet.setColumnWidth(i, 15 * 256);
            }
            //设置为居中加粗,格式化时间格式
            HSSFCellStyle style = workbook.createCellStyle();
            HSSFFont font = workbook.createFont();
            font.setBold(true);
            style.setFont(font);
            style.setDataFormat(HSSFDataFormat.getBuiltinFormat("m/d/yy h:mm"));
            //创建表头名称
            HSSFCell cell;
            for (int j = 0; j < str.length; j++) {
                cell = row.createCell(j);
                cell.setCellValue(str[j]);
                cell.setCellStyle(style);
            }
        } catch (Exception e) {
            log.info("导出时设置表头失败!");
            e.printStackTrace();
        }
    }

    /**
     * 方法名:setData
     * 功能:表格赋值
     * 描述:
     * 创建人:typ
     * 创建时间:2018/10/19 16:11
     * 修改人:
     * 修改描述:
     * 修改时间:
     */
    private static void setData(HSSFSheet sheet, List<String[]> data) {
        try{
            int rowNum = 1;
            for (int i = 0; i < data.size(); i++) {
                HSSFRow row = sheet.createRow(rowNum);
                for (int j = 0; j < data.get(i).length; j++) {
                    row.createCell(j).setCellValue(data.get(i)[j]);
                }
                rowNum++;
            }
            log.info("表格赋值成功!");
        }catch (Exception e){
            log.info("表格赋值失败!");
            e.printStackTrace();
        }
    }

    /**
     * 方法名:setBrowser
     * 功能:使用浏览器下载
     * 描述:
     * 创建人:typ
     * 创建时间:2018/10/19 16:20
     * 修改人:
     * 修改描述:
     * 修改时间:
     */
    private static void setBrowser(HttpServletResponse response, HSSFWorkbook workbook, String fileName) {
        try {
            //清空response
            response.reset();
            //设置response的Header
            response.addHeader("Content-Disposition", "attachment;filename=" + fileName);
            OutputStream os = new BufferedOutputStream(response.getOutputStream());
            response.setContentType("application/vnd.ms-excel;charset=gb2312");
            //将excel写入到输出流中
            workbook.write(os);
            os.flush();
            os.close();
            log.info("设置浏览器下载成功!");
        } catch (Exception e) {
            log.info("设置浏览器下载失败!");
            e.printStackTrace();
        }

    }


    /**
     * 方法名:importExcel
     * 功能:导入
     * 描述:
     * 创建人:typ
     * 创建时间:2018/10/19 11:45
     * 修改人:
     * 修改描述:
     * 修改时间:
     */
    public static List<Object[]> importExcel(String fileName) {
        log.info("导入解析开始,fileName:{}",fileName);
        try {
            List<Object[]> list = new ArrayList<>();
            InputStream inputStream = new FileInputStream(fileName);
            Workbook workbook = WorkbookFactory.create(inputStream);
            Sheet sheet = workbook.getSheetAt(0);
            //获取sheet的行数
            int rows = sheet.getPhysicalNumberOfRows();
            for (int i = 0; i < rows; i++) {
                //过滤表头行
                if (i == 0) {
                    continue;
                }
                //获取当前行的数据
                Row row = sheet.getRow(i);
                Object[] objects = new Object[row.getPhysicalNumberOfCells()];
                int index = 0;
                for (Cell cell : row) {
                    if (cell.getCellType().equals(NUMERIC)) {
                        objects[index] = (int) cell.getNumericCellValue();
                    }
                    if (cell.getCellType().equals(STRING)) {
                        objects[index] = cell.getStringCellValue();
                    }
                    if (cell.getCellType().equals(BOOLEAN)) {
                        objects[index] = cell.getBooleanCellValue();
                    }
                    if (cell.getCellType().equals(ERROR)) {
                        objects[index] = cell.getErrorCellValue();
                    }
                    index++;
                }
                list.add(objects);
            }
            log.info("导入文件解析成功!");
            return list;
        }catch (Exception e){
            log.info("导入文件解析失败!");
            e.printStackTrace();
        }
        return null;
    }

    //测试导入
    public static void main(String[] args) {
        try {
            String fileName = "f:/test.xlsx";
            List<Object[]> list = importExcel(fileName);
            for (int i = 0; i < list.size(); i++) {
                User user = new User();
                user.setId((Integer) list.get(i)[0]);
                user.setUsername((String) list.get(i)[1]);
                user.setPassword((String) list.get(i)[2]);
                user.setEnable((Integer) list.get(i)[3]);
                System.out.println(user.toString());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

具体业务代码在此不赘述,完整代码:https://download.csdn.net/download/typ1805/10737617

三、poi API简述

1、设置sheet名称和单元格内容

workbook.setSheetName(1, "工作表",HSSFCell.ENCODING_UTF_16);          
cell.setEncoding((short) 1);      
cell.setCellValue("单元格内容");  

2、取得sheet的数目 

workbook.getNumberOfSheets()   

3、据index取得sheet对象

HSSFSheet sheet = wb.getSheetAt(0);  

4、取得有效的行数

int rowcount = sheet.getLastRowNum();  

5、取得一行的有效单元格个数

row.getLastCellNum();    

6、单元格值类型读写

cell.setCellType(HSSFCell.CELL_TYPE_STRING); //设置单元格为STRING类型   
cell.getNumericCellValue();//读取为数值类型的单元格内容  

7、设置列宽、行高

sheet.setColumnWidth((short)column,(short)width);      
row.setHeight((short)height);    

8、添加区域,合并单元格

// 合并从第rowFrom行columnFrom列 
Region region = new Region((short)rowFrom,(short)columnFrom,(short)rowTo(short)columnTo);  
// 到rowTo行columnTo的区域 
sheet.addMergedRegion(region);     
// 得到所有区域       
sheet.getNumMergedRegions()   

9、保存Excel文件

FileOutputStream fileOut = new FileOutputStream(path);   
wb.write(fileOut);   

10、根据单元格不同属性返回字符串数值

public String getCellStringValue(HSSFCell cell) {      
        String cellValue = "";      
        switch (cell.getCellType()) {      
        case HSSFCell.CELL_TYPE_STRING://字符串类型   
            cellValue = cell.getStringCellValue();      
            if(cellValue.trim().equals("")||cellValue.trim().length()<=0)      
                cellValue=" ";      
            break;      
        case HSSFCell.CELL_TYPE_NUMERIC: //数值类型   
            cellValue = String.valueOf(cell.getNumericCellValue());      
            break;      
        case HSSFCell.CELL_TYPE_FORMULA: //公式   
            cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);      
            cellValue = String.valueOf(cell.getNumericCellValue());      
            break;      
        case HSSFCell.CELL_TYPE_BLANK:      
            cellValue=" ";      
            break;      
        case HSSFCell.CELL_TYPE_BOOLEAN:      
            break;      
        case HSSFCell.CELL_TYPE_ERROR:      
            break;      
        default:      
            break;      
        }      
       return cellValue;      
}     

11、常用单元格边框格式

HSSFCellStyle style = wb.createCellStyle();      
style.setBorderBottom(HSSFCellStyle.BORDER_DOTTED);//下边框        
style.setBorderLeft(HSSFCellStyle.BORDER_DOTTED);//左边框        
style.setBorderRight(HSSFCellStyle.BORDER_THIN);//右边框        
style.setBorderTop(HSSFCellStyle.BORDER_THIN);//上边框    

12、设置字体和内容位置

HSSFFont f  = wb.createFont();      
f.setFontHeightInPoints((short) 11);//字号       
f.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);//加粗       
style.setFont(f);      
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//左右居中       
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//上下居中       
style.setRotation(short rotation);//单元格内容的旋转的角度       
HSSFDataFormat df = wb.createDataFormat();      
style1.setDataFormat(df.getFormat("0.00%"));//设置单元格数据格式       
cell.setCellFormula(string);//给单元格设公式       
style.setRotation(short rotation);//单元格内容的旋转的角度   

13、插入图片

//先把读进来的图片放到一个ByteArrayOutputStream中,以便产生ByteArray       
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();      
BufferedImage bufferImg = ImageIO.read(new File("ok.jpg"));      
ImageIO.write(bufferImg,"jpg",byteArrayOut);      
//读进一个excel模版       
FileInputStream fos = new FileInputStream(filePathName+"/stencil.xlt");       
fs = new POIFSFileSystem(fos);      
//创建一个工作薄       
HSSFWorkbook wb = new HSSFWorkbook(fs);      
HSSFSheet sheet = wb.getSheetAt(0);      
HSSFPatriarch patriarch = sheet.createDrawingPatriarch();      
HSSFClientAnchor anchor = new HSSFClientAnchor(0,0,1023,255,(short) 0,0,(short)10,10);           
patriarch.createPicture(anchor , wb.addPicture(byteArrayOut.toByteArray(),HSSFWorkbook.PICTURE_TYPE_JPEG));

14、调整工作表位置

HSSFWorkbook wb = new HSSFWorkbook();     
HSSFSheet sheet = wb.createSheet("format sheet");     
HSSFPrintSetup ps = sheet.getPrintSetup();     
sheet.setAutobreaks(true);     
ps.setFitHeight((short)1);     
ps.setFitWidth((short)1);   

15、设置打印区域

HSSFSheet sheet = wordbook.createSheet("Sheet1");     
wordbook.setPrintArea(0, "$A$1:$C$2");    

16、标注脚注

HSSFSheet sheet = wordbook.createSheet("format sheet");     
HSSFFooter footer = sheet.getFooter()     
footer.setRight( "Page " + HSSFFooter.page() + " of " + HSSFFooter.numPages() );  

17、在工作单中清空行数据,调整行位置

HSSFWorkbook wb = new HSSFWorkbook();     
HSSFSheet sheet = wb.createSheet("row sheet");     
// Create various cells and rows for spreadsheet.      
// Shift rows 6 - 11 on the spreadsheet to the top (rows 0 - 5)      
sheet.shiftRows(5, 10, -5);    

18、选中指定的工作表

HSSFSheet sheet = wb.createSheet("row sheet");     
heet.setSelected(true);  

19、工作表的放大缩小

HSSFSheet sheet1 = wb.createSheet("new sheet");     
sheet1.setZoom(1,2);   // 50 percent magnification    

20、头注和脚注

HSSFSheet sheet = wb.createSheet("new sheet");     
HSSFHeader header = sheet.getHeader();     
header.setCenter("Center Header");     
header.setLeft("Left Header");     
header.setRight(HSSFHeader.font("Stencil-Normal", "Italic") +     
HSSFHeader.fontSize((short) 16) + "Right w/ Stencil-Normal Italic font and size 16");  

21、自定义颜色

HSSFCellStyle style = wb.createCellStyle();     
style.setFillForegroundColor(HSSFColor.LIME.index);     
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);     
HSSFFont font = wb.createFont();     
font.setColor(HSSFColor.RED.index);     
style.setFont(font);     
cell.setCellStyle(style);     

22、填充和颜色设置

HSSFCellStyle style = wb.createCellStyle();     
style.setFillBackgroundColor(HSSFColor.AQUA.index);     
style.setFillPattern(HSSFCellStyle.BIG_SPOTS);     
HSSFCell cell = row.createCell((short) 1);     
cell.setCellValue("X");     
style = wb.createCellStyle();     
style.setFillForegroundColor(HSSFColor.ORANGE.index);     
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);     
cell.setCellStyle(style);   

23、强行刷新单元格公式

HSSFFormulaEvaluator eval=new HSSFFormulaEvaluator((HSSFWorkbook) wb);    
private static void updateFormula(Workbook wb,Sheet s,int row){     
        Row r=s.getRow(row);     
        Cell c=null;     
        FormulaEcaluator eval=null;     
        if(wb instanceof HSSFWorkbook)     
            eval=new HSSFFormulaEvaluator((HSSFWorkbook) wb);     
        else if(wb instanceof XSSFWorkbook)     
            eval=new XSSFFormulaEvaluator((XSSFWorkbook) wb);     
        for(int i=r.getFirstCellNum();i
            c=r.getCell(i);     
            if(c.getCellType()==Cell.CELL_TYPE_FORMULA)     
                eval.evaluateFormulaCell(c);     
        }     
}    

24、设置不显示excel网格线 

sheet.setDisplayGridlines(false);//其中sheet是Sheet对象 

25、设置excel单元格中的内容换行 

cellStyle.setWrapText(true);

注意:其中cellStyle是WorkBook创建的CellStyle对象,然后将cellStyle设置到要换行的Cell对象,最后在要换行的对象(一般为字符串)加入”/r/n”。例如: 

topTile.append("/r/n" +"cellContent"); 

26、单元格的合并 

sheet.addMergedRegion(new CellRangeAddress(0, 4, 0, 2));// 本示例为合并4行2列 

27、设置页眉和页脚的页数 

 HSSFHeader header = sheet.getHeader(); 
 header.setCenter("Center Header"); 
 header.setLeft("Left Header"); 
 header.setRight(HSSFHeader.font("Stencil-Normal", "Italic") + 
 HSSFHeader.fontSize((short) 16) + "Right w/ Stencil-Normal Italic font and size 16"); 
 HSSFFooter footer = (HSSFFooter )sheet.getFooter() 
 footer.setRight( "Page " + HSSFFooter.page() + " of " + HSSFFooter.numPages() ); 

28、使得一个Sheet适合一页 

 sheet.setAutobreaks(true); 

29、设置放大属性(Zoom被明确为一个分数,例如下面的75%使用3作为分子,4作为分母) 

sheet.setZoom(3,4);   

30、设置打印 

  HSSFPrintSetup print = (HSSFPrintSetup) sheet.getPrintSetup(); 
  print.setLandscape(true);//设置横向打印 
  print.setScale((short) 70);//设置打印缩放70% 
  print.setPaperSize(HSSFPrintSetup.A4_PAPERSIZE);//设置为A4纸张 
  print.setLeftToRight(true);//設置打印顺序先行后列,默认为先列行            
  print.setFitHeight((short) 10);设置缩放调整为10页高 
  print.setFitWidth((short) 10);设置缩放调整为宽高 

  sheet.setAutobreaks(false); 
  if (i != 0 && i % 30 == 0) {
      sheet.setRowBreak(i);//設置每30行分頁打印 
  }

31、反复的行和列(设置打印标题) 

HSSFWorkbook wb = new HSSFWorkbook(); 
wb.setRepeatingRowsAndColumns(0, 0, 12, 1, 6);//设置1到12列,行1到6每一页重复打印 

32、调整单元格宽度 

sheet.setAutobreaks(true); 
sheet.setColumnWidth((short)i,colsWidth[i]); //设定单元格长度 
sheet.autoSizeColumn((short) i);//自动根据长度调整单元格长度 

使用poi对excel的操作到此结束。。。

 

EasyPOI操作Excel

注:使用easypoi API导出excel相对于poi的API比较简单。

一、导出Excel

1、添加依赖

<dependency>
	<groupId>cn.afterturn</groupId>
	<artifactId>easypoi-spring-boot-starter</artifactId>
	<version>3.3.0</version>
</dependency>

2、映射实体注解

/**
 * 路径:com.example.demo.entity
 * 类名:
 * 功能:使用easypoi导出excel
 * 备注:
 * 创建人:typ
 * 创建时间:2019/5/19 20:54
 * 修改人:
 * 修改备注:
 * 修改时间:
 */
@Data
public class BrandInfo implements Serializable{

    @Excel(name = "brandGuid", width = 25,orderNum = "0")
    private String brandGuid;

    @Excel(name = "brandName", width = 25,orderNum = "0")
    private String brandName;

    @Excel(name = "ytFullcode", width = 25,orderNum = "0")
    private String ytFullcode;

    @Excel(name = "formatGuid", width = 25,orderNum = "0")
    private String formatGuid;

    @Excel(name = "flag", width = 25,orderNum = "0")
    private String flag;

    @Excel(name = "customerid", width = 25,orderNum = "0")
    private String customerid;

    @Excel(name = "createDatetime",width = 20,exportFormat = "yyyy-MM-dd HH:mm:ss", orderNum = "1")
    private String createDatetime;

    @Excel(name = "updateDatetime",width = 20,exportFormat = "yyyy-MM-dd HH:mm:ss", orderNum = "1")
    private String updateDatetime;

    @Excel(name = "source", width = 25,orderNum = "0")
    private Integer source;

}

3、查询数据

3.1、service接口:

public interface ExcelService {

    List<BrandInfo> list();
}

3.2、service实现类:

@Service
public class ExcelServiceImlp implements ExcelService {

    @Autowired
    private ExcelMapper excelMapper;

    @Override
    public List<BrandInfo> list() {
        return excelMapper.list();
    }
}

3.3、mapper接口 

@Mapper
public interface ExcelMapper {

    List<BrandInfo> list();
}

 3.4、mapper对应的xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

<mapper namespace="com.example.demo.mapper.ExcelMapper">
    
    <select id="list" resultType="com.example.demo.entity.BrandInfo">
        select brand_guid,brand_name,yt_fullcode,format_guid,flag,customerid,create_datetime,update_datetime,source from brand_info
    </select>

</mapper>

4、导出Controller

package com.example.demo.controller;

import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import com.example.demo.entity.BrandInfo;
import com.example.demo.service.ExcelService;
import org.apache.poi.ss.usermodel.Workbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletResponse;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;

/**
 * 路径:com.example.demo.controller
 * 类名:EasyPoiExcelController
 * 功能:使用easypoi注解进行导入导出
 * 备注:
 * 创建人:typ
 * 创建时间:2019/5/19 20:00
 * 修改人:
 * 修改备注:
 * 修改时间:
 */
@RestController
@RequestMapping("/easypoi")
public class EasyPoiExcelController {

    private static final Logger log = LoggerFactory.getLogger(EasyPoiExcelController.class);

    @Autowired
    public ExcelService excelService;

    /**
     * 方法名:exportExcel
     * 功能:导出
     * 描述:
     * 创建人:typ
     * 创建时间:2019/5/19 20:03
     * 修改人:
     * 修改描述:
     * 修改时间:
     */
    @GetMapping("/exportExcel")
    public void exportExcel(HttpServletResponse response){
        log.info("请求 exportExcel start ......");

        // 获取用户信息
        List<BrandInfo> list = excelService.list();

        try {
            // 设置响应输出的头类型及下载文件的默认名称
            String fileName = new String("demo信息表.xls".getBytes("utf-8"), "ISO-8859-1");
            response.addHeader("Content-Disposition", "attachment;filename=" + fileName);
            response.setContentType("application/vnd.ms-excel;charset=gb2312");

            //导出
            Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams(), BrandInfo.class, list);
            workbook.write(response.getOutputStream());
            log.info("请求 exportExcel end ......");
        } catch (IOException e) {
            log.info("请求 exportExcel 异常:{}", e.getMessage());
        }
    }
}

5、浏览器请求 http://localhost:8081/easypoi/exportExcel导出结果如下

Springboot+Poi实现Excel的导入导出

二、导入Excel

这里只是简单的测试了一下,没有把数据往数据库存储:

public static void main(String[] args) {
        try{
            // 没有使用实体类注解的形式,这里用的Map
            List<Map<String,Object>> list = ExcelImportUtil.importExcel(
                    new File(PoiPublicUtil.getWebRootPath("check.xls")),
                    Map.class,
                    new ImportParams()
            );
            // 数据打印
            for (Map<String, Object> map : list) {
                System.out.println(JSON.toJSON(map));
            }
        } catch (Exception e){
            log.info(" Excel 导入异常:{}", e.getMessage());
        }
    }

Excel原数据如图:

Springboot+Poi实现Excel的导入导出

导入结果如下:

DEBUG 2019-05-31 14:54:06,466 cn.afterturn.easypoi.excel.imports.ExcelImportServer: Excel import start ,class is interface java.util.Map
DEBUG 2019-05-31 14:54:06,811 cn.afterturn.easypoi.excel.imports.ExcelImportServer:  start to read excel by is ,startTime is 1559285646811
DEBUG 2019-05-31 14:54:06,812 cn.afterturn.easypoi.excel.imports.ExcelImportServer:  end to read excel by is ,endTime is 1559285646811
DEBUG 2019-05-31 14:54:06,837 cn.afterturn.easypoi.excel.imports.ExcelImportServer:  end to read excel list by pos ,endTime is 1559285646837
{"name":"zhangsan","password":123,"id":1,"sex":"男"}
{"name":"lisi","password":123456,"id":2,"sex":"男"}
{"name":"wangwu","password":10002,"id":3,"sex":"女"}
{"name":"zhaoliu","password":1587,"id":4,"sex":"男"}
{"name":"maqi","password":45987,"id":5,"sex":"女"}
{"name":"houjiu","password":23143,"id":6,"sex":"男"}
{"name":"jishi","password":4543645,"id":7,"sex":"男"}

 

解决不同浏览器导出excel中文名称乱码问题

在Windows上以上的导出都是正常,而在Max上导出时,文件名称包含中文时会乱码,只需添加一下代码就可以完美的解决名称乱码问题。

// 各浏览器基本都支持ISO编码
String userAgent = request.getHeader("User-Agent").toUpperCase();
if(userAgent.contains("TRIDENT") || userAgent.contains("EDGE")){
   fileName = java.net.URLEncoder.encode(fileName, "UTF-8");
} else if(userAgent.contains("MSIE")) {
   fileName = new String(fileName.getBytes(), "ISO-8859-1");
} else {
   fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
}
response.addHeader("Content-Disposition", String.format("attachment; filename=\"%s\"", fileName));

使用POI将HTML Table导出Excel

1、POI依赖

       <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.8</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.8</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml-schemas</artifactId>
            <version>3.8</version>
        </dependency>

2、导出工具类

2.1、使用HSSFWorkbook

package com.demo.utils;

import com.demo.model.CrossRangeCellMeta;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.CellRangeAddress;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;


/**
 * 类名:Html2Excel.java
 * 路径:com.demo.utils.Html2Excel.java
 * 创建人:tanyp
 * 创建时间:2019/9/19 10:00
 * 功能:将html table转成excel
 * 修改人:
 * 修改时间:
 * 修改备注:
 */
public class Html2Excel {

    /**
     * 方法名:table2Excel
     * 功能:html表格转excel
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:00
     * 入参:html字符串:<table> ... </table>
     * 出参:excel
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    public static HSSFWorkbook table2Excel(String tableHtml) {
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet sheet = wb.createSheet();
        HSSFCellStyle style = wb.createCellStyle();
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        List<CrossRangeCellMeta> crossRowEleMetaLs = new ArrayList<>();
        int rowIndex = 0;
        try {
            Document data = DocumentHelper.parseText(tableHtml);
            // 生成表头
            Element thead = data.getRootElement().element("thead");
            HSSFCellStyle titleStyle = getTitleStyle(wb);
            if (thead != null) {
                List<Element> trLs = thead.elements("tr");
                for (Element trEle : trLs) {
                    HSSFRow row = sheet.createRow(rowIndex);
                    List<Element> thLs = trEle.elements("th");
                    makeRowCell(thLs, rowIndex, row, 0, titleStyle, crossRowEleMetaLs);
                    row.setHeightInPoints(17);
                    rowIndex++;
                }
            }
            // 生成表体
            Element tbody = data.getRootElement().element("tbody");
            if (tbody != null) {
                HSSFCellStyle contentStyle = getContentStyle(wb);
                List<Element> trLs = tbody.elements("tr");
                for (Element trEle : trLs) {
                    HSSFRow row = sheet.createRow(rowIndex);
                    List<Element> thLs = trEle.elements("th");
                    int cellIndex = makeRowCell(thLs, rowIndex, row, 0, titleStyle, crossRowEleMetaLs);
                    List<Element> tdLs = trEle.elements("td");
                    makeRowCell(tdLs, rowIndex, row, cellIndex, contentStyle, crossRowEleMetaLs);
                    row.setHeightInPoints(18);
                    rowIndex++;
                }
            }
            // 合并表头
            for (CrossRangeCellMeta crcm : crossRowEleMetaLs) {
                sheet.addMergedRegion(new CellRangeAddress(crcm.getFirstRow(), crcm.getLastRow(), crcm.getFirstCol(), crcm.getLastCol()));
            }
        } catch (DocumentException e) {
            e.printStackTrace();
        }
        //自动调整列宽
        for (int i = 0; i < 15; i++) {
            sheet.autoSizeColumn((short) i);
        }
        return wb;
    }

    /**
     * 方法名:makeRowCell
     * 功能:生产行内容
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:01
     * 入参:
     * tdLs: th或者td集合;
     * rowIndex: 行号;
     * row: POI行对象;
     * startCellIndex;
     * cellStyle: 样式;
     * crossRowEleMetaLs: 跨行元数据集合
     * 出参:
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static int makeRowCell(List<Element> tdLs, int rowIndex, HSSFRow row, int startCellIndex, HSSFCellStyle cellStyle, List<CrossRangeCellMeta> crossRowEleMetaLs) {
        int i = startCellIndex;
        for (int eleIndex = 0; eleIndex < tdLs.size(); i++, eleIndex++) {
            int captureCellSize = getCaptureCellSize(rowIndex, i, crossRowEleMetaLs);
            while (captureCellSize > 0) {
                // 当前行跨列处理(补单元格)
                for (int j = 0; j < captureCellSize; j++) {
                    row.createCell(i);
                    i++;
                }
                captureCellSize = getCaptureCellSize(rowIndex, i, crossRowEleMetaLs);
            }
            Element thEle = tdLs.get(eleIndex);
            String val = thEle.getTextTrim();
            if (StringUtils.isBlank(val)) {
                Element e = thEle.element("a");
                if (e != null) {
                    val = e.getTextTrim();
                }
            }
            HSSFCell c = row.createCell(i);
            if (NumberUtils.isNumber(val)) {
                c.setCellValue(Double.parseDouble(val));
                c.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
            } else {
                c.setCellValue(val);
            }
            c.setCellStyle(cellStyle);
            int rowSpan = NumberUtils.toInt(thEle.attributeValue("rowspan"), 1);
            int colSpan = NumberUtils.toInt(thEle.attributeValue("colspan"), 1);
            // 存在跨行或跨列
            if (rowSpan > 1 || colSpan > 1) {
                crossRowEleMetaLs.add(new CrossRangeCellMeta(rowIndex, i, rowSpan, colSpan));
            }
            // 当前行跨列处理(补单元格)
            if (colSpan > 1) {
                for (int j = 1; j < colSpan; j++) {
                    i++;
                    row.createCell(i);
                }
            }
        }
        return i;
    }

    /**
     * 方法名:getCaptureCellSize
     * 功能:获得因rowSpan占据的单元格
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:03
     * 入参:
     * rowIndex:行号
     * colIndex:列号
     * crossRowEleMetaLs:跨行列元数据
     * 出参:当前行在某列需要占据单元格
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static int getCaptureCellSize(int rowIndex, int colIndex, List<CrossRangeCellMeta> crossRowEleMetaLs) {
        int captureCellSize = 0;
        for (CrossRangeCellMeta crossRangeCellMeta : crossRowEleMetaLs) {
            if (crossRangeCellMeta.getFirstRow() < rowIndex && crossRangeCellMeta.getLastRow() >= rowIndex) {
                if (crossRangeCellMeta.getFirstCol() <= colIndex && crossRangeCellMeta.getLastCol() >= colIndex) {
                    captureCellSize = crossRangeCellMeta.getLastCol() - colIndex + 1;
                }
            }
        }
        return captureCellSize;
    }

    /**
     * 方法名:getTitleStyle
     * 功能:获得标题样式
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:04
     * 入参:workbook
     * 出参:
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static HSSFCellStyle getTitleStyle(HSSFWorkbook workbook) {
        short titlebackgroundcolor = HSSFColor.GREY_25_PERCENT.index;
        short fontSize = 12;
        String fontName = "宋体";
        HSSFCellStyle style = workbook.createCellStyle();
        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        style.setBorderBottom((short) 1);
        style.setBorderTop((short) 1);
        style.setBorderLeft((short) 1);
        style.setBorderRight((short) 1);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        // 背景色
        style.setFillForegroundColor(titlebackgroundcolor);
        HSSFFont font = workbook.createFont();
        font.setFontName(fontName);
        font.setFontHeightInPoints(fontSize);
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        style.setFont(font);
        return style;
    }

    /**
     * 方法名:getContentStyle
     * 功能:获得内容样式
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:05
     * 入参:HSSFWorkbook
     * 出参:
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static HSSFCellStyle getContentStyle(HSSFWorkbook wb) {
        short fontSize = 12;
        String fontName = "宋体";
        HSSFCellStyle style = wb.createCellStyle();
        style.setBorderBottom((short) 1);
        style.setBorderTop((short) 1);
        style.setBorderLeft((short) 1);
        style.setBorderRight((short) 1);
        HSSFFont font = wb.createFont();
        font.setFontName(fontName);
        font.setFontHeightInPoints(fontSize);
        style.setFont(font);
        return style;
    }

}

 异常:使用Html2Excel.java导出时列超过256时会报错:Invalid column index (256).  Allowable column range for BIFF8 is (0..255) or (‘A’..’IV’)。

原因:使用HSSFWorkbook最多只能创建256列,超过就会报上述的错误。

解决方法:使用XSSFWorkbook创建,最多可以创建16384列。修改Html2Excel工具类为XHtml2Excel.java,如下:

2.2、使用XSSFWorkbook

package com.demo.utils;

import com.demo.model.CrossRangeCellMeta;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.*;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;


/**
 * 类名:XHtml2Excel.java
 * 路径:com.demo.utils.XHtml2Excel.java
 * 创建人:tanyp
 * 创建时间:2019/9/19 10:00
 * 功能:将html table转成excel
 * 修改人:
 * 修改时间:
 * 修改备注:
 */
public class XHtml2Excel {

    /**
     * 方法名:table2Excel
     * 功能:html表格转excel
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:00
     * 入参:html字符串:<table> ... </table>
     * 出参:excel
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    public static XSSFWorkbook table2Excel(String tableHtml) {
        XSSFWorkbook wb = new XSSFWorkbook();
        XSSFSheet sheet = wb.createSheet();
        XSSFCellStyle style = wb.createCellStyle();
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        List<CrossRangeCellMeta> crossRowEleMetaLs = new ArrayList<>();
        int rowIndex = 0;
        try {
            Document data = DocumentHelper.parseText(tableHtml);
            // 生成表头
            Element thead = data.getRootElement().element("thead");
            XSSFCellStyle titleStyle = getTitleStyle(wb);
            if (thead != null) {
                List<Element> trLs = thead.elements("tr");
                for (Element trEle : trLs) {
                    XSSFRow row = sheet.createRow(rowIndex);
                    List<Element> thLs = trEle.elements("th");
                    makeRowCell(thLs, rowIndex, row, 0, titleStyle, crossRowEleMetaLs);
                    row.setHeightInPoints(17);
                    rowIndex++;
                }
            }
            // 生成表体
            Element tbody = data.getRootElement().element("tbody");
            if (tbody != null) {
                XSSFCellStyle contentStyle = getContentStyle(wb);
                List<Element> trLs = tbody.elements("tr");
                for (Element trEle : trLs) {
                    XSSFRow row = sheet.createRow(rowIndex);
                    List<Element> thLs = trEle.elements("th");
                    int cellIndex = makeRowCell(thLs, rowIndex, row, 0, titleStyle, crossRowEleMetaLs);
                    List<Element> tdLs = trEle.elements("td");
                    makeRowCell(tdLs, rowIndex, row, cellIndex, contentStyle, crossRowEleMetaLs);
                    row.setHeightInPoints(18);
                    rowIndex++;
                }
            }
            // 合并表头
            for (CrossRangeCellMeta crcm : crossRowEleMetaLs) {
                sheet.addMergedRegion(new CellRangeAddress(crcm.getFirstRow(), crcm.getLastRow(), crcm.getFirstCol(), crcm.getLastCol()));
            }
        } catch (DocumentException e) {
            e.printStackTrace();
        }
        //自动调整列宽
        for (int i = 0; i < 15; i++) {
            sheet.autoSizeColumn((short) i);
        }
        return wb;
    }

    /**
     * 方法名:makeRowCell
     * 功能:生产行内容
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:01
     * 入参:
     * tdLs: th或者td集合;
     * rowIndex: 行号;
     * row: POI行对象;
     * startCellIndex;
     * cellStyle: 样式;
     * crossRowEleMetaLs: 跨行元数据集合
     * 出参:
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static int makeRowCell(List<Element> tdLs, int rowIndex, XSSFRow row, int startCellIndex, XSSFCellStyle cellStyle, List<CrossRangeCellMeta> crossRowEleMetaLs) {
        int i = startCellIndex;
        for (int eleIndex = 0; eleIndex < tdLs.size(); i++, eleIndex++) {
            int captureCellSize = getCaptureCellSize(rowIndex, i, crossRowEleMetaLs);
            while (captureCellSize > 0) {
                // 当前行跨列处理(补单元格)
                for (int j = 0; j < captureCellSize; j++) {
                    row.createCell(i);
                    i++;
                }
                captureCellSize = getCaptureCellSize(rowIndex, i, crossRowEleMetaLs);
            }
            Element thEle = tdLs.get(eleIndex);
            String val = thEle.getTextTrim();
            if (StringUtils.isBlank(val)) {
                Element e = thEle.element("a");
                if (e != null) {
                    val = e.getTextTrim();
                }
            }
            XSSFCell c = row.createCell(i);
            if (NumberUtils.isNumber(val)) {
                c.setCellValue(Double.parseDouble(val));
                c.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
            } else {
                c.setCellValue(val);
            }
            c.setCellStyle(cellStyle);
            int rowSpan = NumberUtils.toInt(thEle.attributeValue("rowspan"), 1);
            int colSpan = NumberUtils.toInt(thEle.attributeValue("colspan"), 1);
            // 存在跨行或跨列
            if (rowSpan > 1 || colSpan > 1) {
                crossRowEleMetaLs.add(new CrossRangeCellMeta(rowIndex, i, rowSpan, colSpan));
            }
            // 当前行跨列处理(补单元格)
            if (colSpan > 1) {
                for (int j = 1; j < colSpan; j++) {
                    i++;
                    row.createCell(i);
                }
            }
        }
        return i;
    }

    /**
     * 方法名:getCaptureCellSize
     * 功能:获得因rowSpan占据的单元格
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:03
     * 入参:
     * rowIndex:行号
     * colIndex:列号
     * crossRowEleMetaLs:跨行列元数据
     * 出参:当前行在某列需要占据单元格
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static int getCaptureCellSize(int rowIndex, int colIndex, List<CrossRangeCellMeta> crossRowEleMetaLs) {
        int captureCellSize = 0;
        for (CrossRangeCellMeta crossRangeCellMeta : crossRowEleMetaLs) {
            if (crossRangeCellMeta.getFirstRow() < rowIndex && crossRangeCellMeta.getLastRow() >= rowIndex) {
                if (crossRangeCellMeta.getFirstCol() <= colIndex && crossRangeCellMeta.getLastCol() >= colIndex) {
                    captureCellSize = crossRangeCellMeta.getLastCol() - colIndex + 1;
                }
            }
        }
        return captureCellSize;
    }

    /**
     * 方法名:getTitleStyle
     * 功能:获得标题样式
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:04
     * 入参:workbook
     * 出参:
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static XSSFCellStyle getTitleStyle(XSSFWorkbook workbook) {
        short titlebackgroundcolor = HSSFColor.GREY_25_PERCENT.index;
        short fontSize = 12;
        String fontName = "宋体";
        XSSFCellStyle style = workbook.createCellStyle();
        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        style.setBorderBottom((short) 1);
        style.setBorderTop((short) 1);
        style.setBorderLeft((short) 1);
        style.setBorderRight((short) 1);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        // 背景色
        style.setFillForegroundColor(titlebackgroundcolor);
        XSSFFont font = workbook.createFont();
        font.setFontName(fontName);
        font.setFontHeightInPoints(fontSize);
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        style.setFont(font);
        return style;
    }

    /**
     * 方法名:getContentStyle
     * 功能:获得内容样式
     * 创建人:tanyp
     * 创建时间:2019/9/19 10:05
     * 入参:HSSFWorkbook
     * 出参:
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    private static XSSFCellStyle getContentStyle(XSSFWorkbook wb) {
        short fontSize = 12;
        String fontName = "宋体";
        XSSFCellStyle style = wb.createCellStyle();
        style.setBorderBottom((short) 1);
        style.setBorderTop((short) 1);
        style.setBorderLeft((short) 1);
        style.setBorderRight((short) 1);
        XSSFFont font = wb.createFont();
        font.setFontName(fontName);
        font.setFontHeightInPoints(fontSize);
        style.setFont(font);
        return style;
    }

}

3、跨行列实体类

package com.demo.model;

/**
 * 类名:CrossRangeCellMeta.java
 * 路径:com.winner.model.CrossRangeCellMeta.java
 * 创建人:tanyp
 * 创建时间:2019/9/19 10:00
 * 功能:跨行元素元数据
 * 修改人:
 * 修改时间:
 * 修改备注:
 */
public class CrossRangeCellMeta {

    public CrossRangeCellMeta(int firstRowIndex, int firstColIndex, int rowSpan, int colSpan) {
        super();
        this.firstRowIndex = firstRowIndex;
        this.firstColIndex = firstColIndex;
        this.rowSpan = rowSpan;
        this.colSpan = colSpan;
    }

    private int firstRowIndex;
    private int firstColIndex;
    // 跨越行数
    private int rowSpan;
    // 跨越列数
    private int colSpan;

    public int getFirstRow() {
        return firstRowIndex;
    }

    public int getLastRow() {
        return firstRowIndex + rowSpan - 1;
    }

    public int getFirstCol() {
        return firstColIndex;
    }

    public int getLastCol() {
        return firstColIndex + colSpan - 1;
    }

    public int getColSpan() {
        return colSpan;
    }
}

4、controller调用

/**
 * 类名:Html2ExcelController.java
 * 路径:com.demo.controller.Html2ExcelController.java
 * 创建人:tanyp
 * 创建时间:2019/9/19 10:00
 * 功能:HTML table导出excel
 * 修改人:
 * 修改时间:
 * 修改备注:
 */
@Controller
public class Html2ExcelController {
     private static final Logger log = LoggerFactory.getLogger(Html2ExcelController.class);

   /**
     * 方法名:exportExcel
     * 功能:导出
     * 创建人:tanyp
     * 创建时间:2019/9/19 11:07
     * 入参:dataTable
     * 出参:
     * 修改人:
     * 修改时间:
     * 修改备注:
     */
    @RequestMapping("exportExcel")
    public void exportExcel(HttpServletRequest request, HttpServletResponse response) {
        try {
            String dataTable = request.getParameter("dataTable");
            String fileName = "测试"+System.currentTimeMillis()+".xls";
            // 各浏览器基本都支持ISO编码
            String userAgent = request.getHeader("User-Agent").toUpperCase();
            if (userAgent.contains("TRIDENT") || userAgent.contains("EDGE")) {
                fileName = java.net.URLEncoder.encode(fileName, "UTF-8");
            } else if (userAgent.contains("MSIE")) {
                fileName = new String(fileName.getBytes(), "ISO-8859-1");
            } else {
                fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
            }

            response.addHeader("Content-Disposition", String.format("attachment; filename=\"%s\"", fileName));
            OutputStream os = new BufferedOutputStream(response.getOutputStream());
            response.setContentType("application/vnd.ms-excel;charset=gb2312");
            //将excel写入到输出流中
            HSSFWorkbook workbook = Html2Excel.table2Excel(dataTable);
            // XSSFWorkbook workbook = XHtml2Excel.table2Excel(dataTable);
            workbook.write(os);
            os.flush();
            os.close();
        } catch (Exception e) {
            e.printStackTrace();
            log.error("请求 exportExcel异常:{}", e.getMessage());
        }
    }
}

备注:使用两个不同工具类时导包不同(HSSFWorkbook或XSSFWorkbook) 。

5、HTML代码

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <script type="text/javascript" src="js/jquery.js"></script>
</head>
<body>
<div onclick="download()">导出</div>
<div id="DateTable" style="overflow-x:scroll">
<table id="myTable" class="gridtable w2000"><thead><tr><th rowspan="2" style="min-width: 100px; max-width: 100px;width: 100px;">名称</th><th rowspan="2" style="min-width: 80px; max-width: 80px;width: 80px;">客流总量(人次)</th><th rowspan="2" style="min-width: 80px; max-width: 80px;width: 80px;">编码</th><th rowspan="2" style="min-width: 80px; max-width: 80px;width: 80px;">单客流总量(人次)</th><th colspan="3">时段客流(人次)</th></tr><tr><th style="min-width: 80px; max-width: 80px;width: 80px;">01:05</th><th style="min-width: 80px; max-width: 80px;width: 80px;">01:10</th><th style="min-width: 80px; max-width: 80px;width: 80px;">01:15</th></tr></thead><tbody id="pointBasedDateTbody"><tr><td rowspan="2">购物一号门</td><td rowspan="2">5006</td><td>C001</td><td>3006</td><td>0</td><td>0</td><td>0</td></tr><tr><td>C002</td><td>2000</td><td>0</td><td>0</td><td>0</td></tr><tr><td rowspan="2">购物二号门</td><td rowspan="2">2796</td><td>C001</td><td>1542</td><td>0</td><td>0</td><td>0</td></tr><tr><td>C002</td><td>1254</td><td>0</td><td>0</td><td>0</td></tr><tr><td rowspan="1">购物三号门</td><td rowspan="1">1654</td><td>C005</td><td>1654</td><td>0</td><td>0</td><td>0</td></tr><tr><td rowspan="1">购物四号门</td><td rowspan="1">54365</td><td>C001</td><td>54365</td><td>0</td><td>0</td><td>0</td></tr></tbody></table>
</div>
<form action="exportExcel" id="exportExcle" method="POST">
        <input type="hidden" name="dataTable" id="dataTable">
</form>
</body>
<script>
function download() {
    var html = $("#tables").html();
    $("#dataTable").val(html);
    $("#exportExcle").submit();
};
</script>
</html>

6、效果图

Springboot+Poi实现Excel的导入导出

 

欢迎关注

Springboot+Poi实现Excel的导入导出

 

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