easypoi导出表格带echars图表
Posted 符华-
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效果
实现思路
前端图表用的是echars显示，只需要让前端将图表以图片的形式，将图片的base64传过来，后端接收到这个base64，写入到工作簿中的sheet中即可。无论是折线图、饼图、柱状图都是一样的，以图片的形式将图片追加到sheet中，只需要设定好图表的偏移量即可。
实现
1、ExcelStyleUtil 导出样式工具类
import cn.afterturn.easypoi.excel.entity.params.ExcelExportEntity;
import cn.afterturn.easypoi.excel.entity.params.ExcelForEachParams;
import cn.afterturn.easypoi.excel.export.styler.IExcelExportStyler;
import org.apache.poi.ss.usermodel.*;
public class ExcelStyleUtil implements IExcelExportStyler
private static final short STRING_FORMAT = (short) BuiltinFormats.getBuiltinFormat("TEXT");
private static final short FONT_SIZE_TEN = 12;
private static final short FONT_SIZE_ELEVEN = 14;
private static final short FONT_SIZE_TWELVE = 18;
/**
* 大标题样式
*/
private CellStyle headerStyle;
/**
* 每列标题样式
*/
private CellStyle titleStyle;
/**
* 数据行样式
*/
private CellStyle styles;
public ExcelStyleUtil(Workbook workbook)
this.init(workbook);
/**
* 初始化样式
* @param workbook
*/
private void init(Workbook workbook)
this.headerStyle = initHeaderStyle(workbook);
this.titleStyle = initTitleStyle(workbook,true,FONT_SIZE_ELEVEN);
this.styles = initStyles(workbook);
@Override
public CellStyle getHeaderStyle(short i)
return headerStyle;
@Override
public CellStyle getTitleStyle(short i)
return titleStyle;
@Override
public CellStyle getTemplateStyles(boolean b, ExcelForEachParams excelForEachParams)
return null;
@Override
public CellStyle getStyles(boolean b, ExcelExportEntity excelExportEntity)
return styles;
@Override
public CellStyle getStyles(Cell cell, int i, ExcelExportEntity entity, Object o, Object o1)
return getStyles(true, entity);
/**
* 设置隔行背景色
*/
public static CellStyle getStyles(Workbook workbook,boolean isBold,short size)
CellStyle style = initTitleStyle(workbook,isBold,size);
style.setDataFormat(STRING_FORMAT);
return style;
/**
* 初始化--大标题样式
*/
private static CellStyle initHeaderStyle(Workbook workbook)
CellStyle style = getBaseCellStyle(workbook);
style.setFont(getFont(workbook, FONT_SIZE_TWELVE, true));
return style;
/**
* 初始化--每列标题样式
*/
private static CellStyle initTitleStyle(Workbook workbook,boolean isBold,short size)
CellStyle style = getBaseCellStyle(workbook);
style.setFont(getFont(workbook, size, isBold));
//背景色
style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
return style;
/**
* 初始化--数据行样式
*/
private static CellStyle initStyles(Workbook workbook)
CellStyle style = getBaseCellStyle(workbook);
style.setFont(getFont(workbook, FONT_SIZE_TEN, false));
style.setDataFormat(STRING_FORMAT);
return style;
/**
* 基础样式
*/
private static CellStyle getBaseCellStyle(Workbook workbook)
CellStyle style = workbook.createCellStyle();
//下边框
style.setBorderBottom(BorderStyle.THIN);
//左边框
style.setBorderLeft(BorderStyle.THIN);
//上边框
style.setBorderTop(BorderStyle.THIN);
//右边框
style.setBorderRight(BorderStyle.THIN);
//水平居中
style.setAlignment(HorizontalAlignment.CENTER);
//上下居中
style.setVerticalAlignment(VerticalAlignment.CENTER);
//设置自动换行
style.setWrapText(true);
return style;
/**
* 字体样式
* @param size 字体大小
* @param isBold 是否加粗
*/
private static Font getFont(Workbook workbook, short size, boolean isBold)
Font font = workbook.createFont();
//字体样式
font.setFontName("宋体");
//是否加粗
font.setBold(isBold);
//字体大小
font.setFontHeightInPoints(size);
return font;
2、ExcelUtil 导出工具类
import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.annotation.Excel;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import cn.afterturn.easypoi.excel.entity.params.ExcelExportEntity;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.excel.imports.ExcelImportService;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;
import sun.misc.BASE64Decoder;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.*;
import java.lang.reflect.Field;
import java.net.URLEncoder;
import java.util.*;
public class ExcelUtil
/**
* excel 导出
* @param list 数据
* @param title 标题
* @param sheetName sheet名称
* @param pojoClass pojo类型
* @param fileName 文件名称
*/
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, HttpServletResponse response)
ExportParams exportParams = new ExportParams(title, sheetName, ExcelType.XSSF);
exportParams.setStyle(ExcelStyleUtil.class);
defaultExport(list, pojoClass, fileName, response, exportParams);
/**
* excel 导出
* @param list 数据
* @param pojoClass pojo类型
* @param fileName 文件名称
*/
public static void exportExcel(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response)
ExportParams exportParams = new ExportParams();
exportParams.setStyle(ExcelStyleUtil.class);
defaultExport(list, pojoClass, fileName, response, exportParams);
/**
* list map 导出
* @param list 数据
* @param fileName 文件名称
*/
public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response)
ExportParams exportParams = new ExportParams();
exportParams.setStyle(ExcelStyleUtil.class);
defaultExport(list, fileName, response);
/**
* 默认的 excel 导出
* @param list 数据
* @param pojoClass pojo类型
* @param fileName 文件名称
* @param exportParams 导出参数
*/
private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams)
Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);
downLoadExcel(fileName, response, workbook);
/**
* 默认的 excel 导出
* @param list 数据
* @param fileName 文件名称
*/
private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response)
Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.XSSF);
downLoadExcel(fileName, response, workbook);
/**
* 下载
* @param fileName 文件名称
* @param response
* @param workbook excel数据
*/
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 + "." + ExcelTypeEnum.XLS.getValue(), "UTF-8"));
workbook.write(response.getOutputStream());
catch (IOException e)
e.printStackTrace();
/**
* excel 导入
* @param filePath excel文件路径
* @param titleRows 标题行
* @param headerRows 表头行
* @param pojoClass pojo类型
*/
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);
params.setSaveUrl("/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 标题行
* @param headerRows 表头行
* @param needVerify 是否检验excel内容
* @param pojoClass pojo类型
*/
public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, boolean needVerify, Class<T> pojoClass) throws IOException
if (file == null)
return null;
try
return importExcel(file.getInputStream(), titleRows, headerRows, needVerify, pojoClass);
catch (Exception e)
throw new IOException(e.getMessage());
/**
* excel 导入
* @param inputStream 文件输入流
* @param titleRows 标题行
* @param headerRows 表头行
* @param needVerify 是否检验excel内容
* @param pojoClass pojo类型
*/
public static <T> List<T> importExcel(InputStream inputStream, Integer titleRows, Integer headerRows, boolean needVerify, Class<T> pojoClass) throws IOException
if (inputStream == null)
return null;
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
params.setSaveUrl("upload/excel/");
params.setNeedSave(true);
params.setNeedVerify(needVerify);
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());
/**
* Excel 类型枚举
*/
enum ExcelTypeEnum
XLS("xls"), XLSX("xlsx");
private String value;
ExcelTypeEnum(String value)
this.value = value;
public String getValue()
return value;
public void setValue(String value)
this.value = value;
/**
* 上传文件，返回一个workbook
* @param file
*/
public static Workbook importExcel(MultipartFile file) throws IOException
File toFile = new File(file.getOriginalFilename());
Workbook workbook = null;
if(toFile.getPath().endsWith("xls"))
workbook = new HSSFWorkbook(file.getInputStream());
else if(toFile.getPath().endsWith("xlsx"))
workbook 使用EasyPOI导出复杂的Word表格