带图片的EXCEL数据导入

这里使用的是POI，所以这里使用的很杂，不过方便对它们的了解。模板下载与图片导出到excel都不一样。
下面会把对应连接贴上。
带入依赖：不要使用3.17的版本，直接上代码：

     <dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>4.1.2</version></dependency>

接口：

@PostMapping("/import")public CommonResult importRoadsAndBridgesData(@RequestParam("file") MultipartFile[] files){MultipartFile file = files[0];String fileName = file.getOriginalFilename();// 上传文件为空if (StringUtils.isEmpty(fileName)) {throw new ServiceException("没有导入文件");}// 上传文件名格式不正确if (fileName.lastIndexOf(".") != -1 && !".xlsx".equals(fileName.substring(fileName.lastIndexOf(".")))) {throw new ServiceException( "文件名格式不正确, 请使用后缀名为.xlsx的文件");}urbanManageDataService.importRoadsAndBridgesData(file);return CommonResult.success();}

@Overridepublic void importRoadsAndBridgesData(MultipartFile file) {ExcelUtil<DetailsOfRoadMaintainDto> util = new ExcelUtil<>(DetailsOfRoadMaintainDto.class);List<DetailsOfRoadMaintainDto> detailsOfRoadDtos = null;try {//文件，sheet名称，标题占用行数detailsOfRoadDtos = util.importExcel(file, "附表1维护情况明细表", 3);} catch (Exception e) {log.error("导入数据解析流失败:{}", e.getMessage());throw new ServiceException("导入数据文件解析失败！");}//封装实体数据和文件上传List<DetailsOfRoadMaintainEntity> list = new ArrayList<>();//道路数据Map<String, DetailsOfRoadMaintainDto> dtoMap = dataConversion(detailsOfRoadDtos, 1, list);//数据保存，替换成你自己的if(!CollectionUtils.isEmpty(list)){detailsOfRoadMaintainMapper.insertList(list);}}//下面都是图片上传和数据存取，就不过多贴上了，主要看excel图片的获取方式
private Map<String, DetailsOfRoadMaintainDto> dataConversion(List<DetailsOfRoadMaintainDto> dtos, Integer type, List<DetailsOfRoadMaintainEntity> list){Map<String, DetailsOfRoadMaintainDto> dtoMap = new HashMap<>();if(!CollectionUtils.isEmpty(dtos)){dtos.forEach(dto ->{DetailsOfRoadMaintainEntity entity = new DetailsOfRoadMaintainEntity();//基础数据转换BeanUtils.copyProperties(dto, entity);entity.setId(IdUtil.simpleUUID());entity.setMaintainType(type);//上传的图片信息entity.setBeforeimg(uploadFile(dto.getBeforeimg()));entity.setCreateTime(new Date());//存入entitylist.add(entity);});}return dtoMap;}
//这里就是已经获取到图片后的正常上传而已，获取到的图片信息为PictureData，转为MultipartFile进行的文件上传
private String uploadFile(PictureData pictureData){if(null != pictureData && pictureData.getData().length > 0){InputStream inputStream = new ByteArrayInputStream(pictureData.getData());SysFile sysFile = null;try {MultipartFile multipartFile = new MockMultipartFile(getFileName(pictureData), null, ContentType.IMAGE_JPEG.toString(), inputStream);sysFile = attachmentService.getUploadFileInfo(multipartFile);} catch (IOException e) {log.error("字节流转文件失败：{}", e.getMessage());throw new ServiceException("字节流转文件失败!");}if(Objects.isNull(sysFile) || StringUtils.isEmpty(sysFile.getUrl())){throw new ServiceException("未获取到上传文件的信息！");}return sysFile.getUrl();}return null;}

上面都是一些图片上传和下面要获取到后的信息进行存储，主要看图片怎么从excel获取的，下面先看参数映射：

@Data
public class DetailsOfRoadMaintainDto implements Serializable {/*** 序号*/@Excel(name = "序号")private String no;@Excel(name = "维护前照片", getPicture = true)private PictureData beforeimg;

public interface ExcelHandlerAdapter
{/*** 格式化* * @param value 单元格数据值* @param args excel注解args参数组** @return 处理后的值*/Object format(Object value, String[] args);
}

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Excels
{Excel[] value();
}

package com.goktech.common.core.annotation;import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.math.BigDecimal;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.IndexedColors;/*** 自定义导出Excel数据注解*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Excel
{/*** 导出时在excel中排序*/public int sort() default Integer.MAX_VALUE;/*** 导出到Excel中的名字.*/public String name() default "";/*** 日期格式, 如: yyyy-MM-dd*/public String dateFormat() default "";/*** 读取内容转表达式 (如: 0=男,1=女,2=未知)*/public String readConverterExp() default "";/*** 读取图片 true=是,false=否)*/public boolean getPicture() default false;/*** 分隔符，读取字符串组内容*/public String separator() default ",";/*** BigDecimal 精度 默认:-1(默认不开启BigDecimal格式化)*/public int scale() default -1;/*** BigDecimal 舍入规则 默认:BigDecimal.ROUND_HALF_EVEN*/public int roundingMode() default BigDecimal.ROUND_HALF_EVEN;/*** 导出时在excel中每个列的高度 单位为字符*/public double height() default 14;/*** 导出时在excel中每个列的宽 单位为字符*/public double width() default 16;/*** 文字后缀,如% 90 变成90%*/public String suffix() default "";/*** 当值为空时,字段的默认值*/public String defaultValue() default "";/*** 提示信息*/public String prompt() default "";/*** 设置只能选择不能输入的列内容.*/public String[] combo() default {};/*** 是否导出数据,应对需求:有时我们需要导出一份模板,这是标题需要但内容需要用户手工填写.*/public boolean isExport() default true;/*** 另一个类中的属性名称,支持多级获取,以小数点隔开*/public String targetAttr() default "";/*** 是否自动统计数据,在最后追加一行统计数据总和*/public boolean isStatistics() default false;/*** 导出类型（0数字 1字符串）*/public ColumnType cellType() default ColumnType.STRING;/*** 导出字体颜色*/public IndexedColors color() default IndexedColors.BLACK;/*** 导出字段对齐方式*/public HorizontalAlignment align() default HorizontalAlignment.CENTER;/*** 自定义数据处理器*/public Class<?> handler() default ExcelHandlerAdapter.class;/*** 自定义数据处理器参数*/public String[] args() default {};/*** 字段类型（0：导出导入；1：仅导出；2：仅导入）*/Type type() default Type.ALL;public enum Type{ALL(0), EXPORT(1), IMPORT(2);private final int value;Type(int value){this.value = value;}public int value(){return this.value;}}public enum ColumnType{NUMERIC(0), STRING(1), IMAGE(2);private final int value;ColumnType(int value){this.value = value;}public int value(){return this.value;}}
}

导入的工具类：

package com.goktech.common.core.utils.poi;import java.io.*;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.rmi.ServerException;
import java.text.DecimalFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;
import javax.servlet.http.HttpServletResponse;import com.common.core.annotation.Excel;
import com.common.core.annotation.Excels;
import com.common.core.exception.ServiceException;
import com.common.core.text.Convert;
import com.common.core.utils.DateUtils;
import com.common.core.utils.StringUtils;
import com.common.core.utils.file.ImageUtils;
import com.common.core.utils.reflect.ReflectUtils;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.RegExUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.*;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.goktech.common.core.utils.file.FileTypeUtils;
import org.springframework.util.ResourceUtils;
import org.springframework.web.multipart.MultipartFile;/*** Excel相关处理** @author ruoyi*/
public class ExcelUtil<T>
{private static final Logger log = LoggerFactory.getLogger(ExcelUtil.class);public static final String FORMULA_REGEX_STR = "=|-|\\+|@";public static final String[] FORMULA_STR = { "=", "-", "+", "@" };/*** Excel sheet最大行数，默认65536*/public static final int SHEET_SIZE = 65536;/*** 工作表名称*/private String sheetName;/*** 导出类型（EXPORT:导出数据；IMPORT：导入模板）*/private Excel.Type type;/*** 工作薄对象*/private Workbook wb;/*** 工作表对象*/private Sheet sheet;/*** 样式列表*/private Map<String, CellStyle> styles;/*** 导入导出数据列表*/private List<T> list;/*** 注解列表*/private List<Object[]> fields;/*** 当前行号*/private int rownum;/*** 标题*/private String title;/*** 最大高度*/private short maxHeight;/*** 统计列表*/private Map<Integer, Double> statistics = new HashMap<Integer, Double>();/*** 数字格式*/private static final DecimalFormat DOUBLE_FORMAT = new DecimalFormat("######0.00");/*** 实体对象*/public Class<T> clazz;public ExcelUtil(Class<T> clazz){this.clazz = clazz;}public void init(List<T> list, String sheetName, String title, Excel.Type type){if (list == null){list = new ArrayList<T>();}this.list = list;this.sheetName = sheetName;this.type = type;this.title = title;createExcelField();createWorkbook();createTitle();}/*** 创建excel第一行标题*/public void createTitle(){if (StringUtils.isNotEmpty(title)){Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);titleRow.setHeightInPoints(30);Cell titleCell = titleRow.createCell(0);titleCell.setCellStyle(styles.get("title"));titleCell.setCellValue(title);sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(),this.fields.size() - 1));}}/*** 对excel表单默认第一个索引名转换成list** @param is 输入流* @return 转换后集合*/public List<T> importExcel(InputStream is) throws Exception{return importExcel(is, 0);}/*** 对excel表单默认第一个索引名转换成list** @param is 输入流* @param titleNum 标题占用行数* @return 转换后集合*/public List<T> importExcel(InputStream is, int titleNum) throws Exception{return importExcel(StringUtils.EMPTY, is, titleNum, null);}/*** @description: 导入带有图片的excel* @param: [sheetName, file]* @return: java.util.List<T>* @date: 2022/8/19 15:46* @version: 1.0**/public List<T> importExcel(MultipartFile file, String sheetName, int ttitleNum) throws Exception{Map<String, PictureData> pictures = getPictures(file, sheetName, file.getInputStream());return importExcel(sheetName, file.getInputStream(), ttitleNum, pictures);}/*** 对excel表单指定表格索引名转换成list** @param sheetName 表格索引名* @param titleNum 标题占用行数* @param is 输入流* @return 转换后集合*/public List<T> importExcel(String sheetName, InputStream is, int titleNum, Map<String, PictureData> pictures) throws Exception{this.type = Excel.Type.IMPORT;this.wb = WorkbookFactory.create(is);List<T> list = new ArrayList<T>();// 如果指定sheet名,则取指定sheet中的内容 否则默认指向第1个sheetSheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0);if (sheet == null){throw new IOException("文件sheet不存在");}// 获取最后一个非空行的行下标，比如总行数为n，则返回的为n-1int rows = sheet.getLastRowNum();if (rows > 0){// 定义一个map用于存放excel列的序号和field.Map<String, Integer> cellMap = new HashMap<String, Integer>();// 获取表头Row heard = sheet.getRow(titleNum);for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++){Cell cell = heard.getCell(i);if (StringUtils.isNotNull(cell)){String value = this.getCellValue(heard, i).toString();cellMap.put(value, i);}else{cellMap.put(null, i);}}// 有数据时才处理 得到类的所有field.List<Object[]> fields = this.getFields();Map<Integer, Object[]> fieldsMap = new HashMap<Integer, Object[]>();for (Object[] objects : fields){Excel attr = (Excel) objects[1];Integer column = cellMap.get(attr.name());if (column != null){fieldsMap.put(column, objects);}}for (int i = titleNum + 1; i <= rows; i++){// 从第2行开始取数据,默认第一行是表头.Row row = sheet.getRow(i);// 判断当前行是否是空行if (isRowEmpty(row)){continue;}T entity = null;for (Map.Entry<Integer, Object[]> entry : fieldsMap.entrySet()){Object val = this.getCellValue(row, entry.getKey());String mergedRegionValue = getMergedRegionValue(sheet, i, entry.getKey());if(ObjectUtils.isEmpty(val) && StringUtils.isNotEmpty(mergedRegionValue)){val = mergedRegionValue;}// 如果不存在实例则新建.entity = (entity == null ? clazz.newInstance() : entity);// 从map中得到对应列的field.Field field = (Field) entry.getValue()[0];Excel attr = (Excel) entry.getValue()[1];// 取得类型,并根据对象类型设置值.Class<?> fieldType = field.getType();if (String.class == fieldType){String s = Convert.toStr(val);if (StringUtils.endsWith(s, ".0")){val = StringUtils.substringBefore(s, ".0");}else{String dateFormat = field.getAnnotation(Excel.class).dateFormat();if (StringUtils.isNotEmpty(dateFormat)){val = parseDateToStr(dateFormat, val);}else{val = Convert.toStr(val);}}}else if ((Integer.TYPE == fieldType || Integer.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val))){val = Convert.toInt(val);}else if ((Long.TYPE == fieldType || Long.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val))){val = Convert.toLong(val);}else if (Double.TYPE == fieldType || Double.class == fieldType){val = Convert.toDouble(val);}else if (Float.TYPE == fieldType || Float.class == fieldType){val = Convert.toFloat(val);}else if (BigDecimal.class == fieldType){val = Convert.toBigDecimal(val);}else if (Date.class == fieldType){if (val instanceof String){val = DateUtils.parseDate(val);}else if (val instanceof Double){val = DateUtil.getJavaDate((Double) val);}}else if (Boolean.TYPE == fieldType || Boolean.class == fieldType){val = Convert.toBool(val, false);}if (StringUtils.isNotNull(fieldType)){String propertyName = field.getName();if (StringUtils.isNotEmpty(attr.targetAttr())){propertyName = field.getName() + "." + attr.targetAttr();}else if (StringUtils.isNotEmpty(attr.readConverterExp())){val = reverseByExp(Convert.toStr(val), attr.readConverterExp(), attr.separator());}else if (!attr.handler().equals(ExcelHandlerAdapter.class)){val = dataFormatHandlerAdapter(val, attr);}else if(attr.getPicture()){String rowCell = i + "-" + entry.getKey();PictureData pictureData = pictures.get(rowCell);if(Objects.nonNull(pictureData)){val = pictureData;}else {val = null;}}ReflectUtils.invokeSetter(entity, propertyName, val);}}list.add(entity);}}return list;}/*** 对list数据源将其里面的数据导入到excel表单** @param response 返回数据* @param list 导出数据集合* @param sheetName 工作表的名称* @return 结果* @throws IOException*/public void exportExcel(HttpServletResponse response, List<T> list, String sheetName){exportExcel(response, list, sheetName, StringUtils.EMPTY);}/*** 对list数据源将其里面的数据导入到excel表单** @param response 返回数据* @param list 导出数据集合* @param sheetName 工作表的名称* @param title 标题* @return 结果* @throws IOException*/public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title){response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");response.setCharacterEncoding("utf-8");this.init(list, sheetName, title, Excel.Type.EXPORT);exportExcel(response);}/*** 对list数据源将其里面的数据导入到excel表单** @param sheetName 工作表的名称* @return 结果*//*** 对list数据源将其里面的数据导入到excel表单** @param sheetName 工作表的名称* @return 结果*/public void importTemplateExcel(HttpServletResponse response, String sheetName){importTemplateExcel(response, sheetName, StringUtils.EMPTY);}/*** 对list数据源将其里面的数据导入到excel表单** @param sheetName 工作表的名称* @param title 标题* @return 结果*/public void importTemplateExcel(HttpServletResponse response, String sheetName, String title){response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");response.setCharacterEncoding("utf-8");this.init(null, sheetName, title, Excel.Type.IMPORT);exportExcel(response);}/*** 对list数据源将其里面的数据导入到excel表单** @return 结果*/public void exportExcel(HttpServletResponse response){try{writeSheet();wb.write(response.getOutputStream());}catch (Exception e){log.error("导出Excel异常{}", e.getMessage());}finally{IOUtils.closeQuietly(wb);}}/*** 创建写入数据到Sheet*/public void writeSheet(){// 取出一共有多少个sheet.int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / SHEET_SIZE));for (int index = 0; index < sheetNo; index++){createSheet(sheetNo, index);// 产生一行Row row = sheet.createRow(rownum);int column = 0;// 写入各个字段的列头名称for (Object[] os : fields){Excel excel = (Excel) os[1];this.createCell(excel, row, column++);}if (Excel.Type.EXPORT.equals(type)){fillExcelData(index, row);addStatisticsRow();}}}/*** 填充excel数据** @param index 序号* @param row 单元格行*/public void fillExcelData(int index, Row row){int startNo = index * SHEET_SIZE;int endNo = Math.min(startNo + SHEET_SIZE, list.size());for (int i = startNo; i < endNo; i++){row = sheet.createRow(i + 1 + rownum - startNo);// 得到导出对象.T vo = (T) list.get(i);int column = 0;for (Object[] os : fields){Field field = (Field) os[0];Excel excel = (Excel) os[1];this.addCell(excel, row, vo, field, column++);}}}/*** 创建表格样式** @param wb 工作薄对象* @return 样式列表*/private Map<String, CellStyle> createStyles(Workbook wb){// 写入各条记录,每条记录对应excel表中的一行Map<String, CellStyle> styles = new HashMap<String, CellStyle>();CellStyle style = wb.createCellStyle();style.setAlignment(HorizontalAlignment.CENTER);style.setVerticalAlignment(VerticalAlignment.CENTER);Font titleFont = wb.createFont();titleFont.setFontName("Arial");titleFont.setFontHeightInPoints((short) 16);titleFont.setBold(true);style.setFont(titleFont);styles.put("title", style);style = wb.createCellStyle();style.setAlignment(HorizontalAlignment.CENTER);style.setVerticalAlignment(VerticalAlignment.CENTER);style.setBorderRight(BorderStyle.THIN);style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setBorderLeft(BorderStyle.THIN);style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setBorderTop(BorderStyle.THIN);style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setBorderBottom(BorderStyle.THIN);style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());Font dataFont = wb.createFont();dataFont.setFontName("Arial");dataFont.setFontHeightInPoints((short) 10);style.setFont(dataFont);styles.put("data", style);style = wb.createCellStyle();style.cloneStyleFrom(styles.get("data"));style.setAlignment(HorizontalAlignment.CENTER);style.setVerticalAlignment(VerticalAlignment.CENTER);style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setFillPattern(FillPatternType.SOLID_FOREGROUND);Font headerFont = wb.createFont();headerFont.setFontName("Arial");headerFont.setFontHeightInPoints((short) 10);headerFont.setBold(true);headerFont.setColor(IndexedColors.WHITE.getIndex());style.setFont(headerFont);styles.put("header", style);style = wb.createCellStyle();style.setAlignment(HorizontalAlignment.CENTER);style.setVerticalAlignment(VerticalAlignment.CENTER);Font totalFont = wb.createFont();totalFont.setFontName("Arial");totalFont.setFontHeightInPoints((short) 10);style.setFont(totalFont);styles.put("total", style);return styles;}/*** 创建单元格*/public Cell createCell(Excel attr, Row row, int column){// 创建列Cell cell = row.createCell(column);// 写入列信息cell.setCellValue(attr.name());setDataValidation(attr, row, column);cell.setCellStyle(styles.get("header"));return cell;}/*** 设置单元格信息** @param value 单元格值* @param attr 注解相关* @param cell 单元格信息*/public void setCellVo(Object value, Excel attr, Cell cell){if (Excel.ColumnType.STRING == attr.cellType()){String cellValue = Convert.toStr(value);// 对于任何以表达式触发字符 =-+@开头的单元格，直接使用tab字符作为前缀，防止CSV注入。if (StringUtils.startsWithAny(cellValue, FORMULA_STR)){cellValue = RegExUtils.replaceFirst(cellValue, FORMULA_REGEX_STR, "\t$0");}cell.setCellValue(StringUtils.isNull(cellValue) ? attr.defaultValue() : cellValue + attr.suffix());}else if (Excel.ColumnType.NUMERIC == attr.cellType()){if (StringUtils.isNotNull(value)){cell.setCellValue(StringUtils.contains(Convert.toStr(value), ".") ? Convert.toDouble(value) : Convert.toInt(value));}}else if (Excel.ColumnType.IMAGE == attr.cellType()){ClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) cell.getColumnIndex(), cell.getRow().getRowNum(), (short) (cell.getColumnIndex() + 1), cell.getRow().getRowNum() + 1);String imagePath = Convert.toStr(value);if (StringUtils.isNotEmpty(imagePath)){byte[] data = ImageUtils.getImage(imagePath);getDrawingPatriarch(cell.getSheet()).createPicture(anchor,cell.getSheet().getWorkbook().addPicture(data, getImageType(data)));}}}/*** 获取画布*/public static Drawing<?> getDrawingPatriarch(Sheet sheet){if (sheet.getDrawingPatriarch() == null){sheet.createDrawingPatriarch();}return sheet.getDrawingPatriarch();}/*** 获取图片类型,设置图片插入类型*/public int getImageType(byte[] value){String type = FileTypeUtils.getFileExtendName(value);if ("JPG".equalsIgnoreCase(type)){return Workbook.PICTURE_TYPE_JPEG;}else if ("PNG".equalsIgnoreCase(type)){return Workbook.PICTURE_TYPE_PNG;}return Workbook.PICTURE_TYPE_JPEG;}/*** 创建表格样式*/public void setDataValidation(Excel attr, Row row, int column){if (attr.name().indexOf("注：") >= 0){sheet.setColumnWidth(column, 6000);}else{// 设置列宽sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));}if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0){// 提示信息或只能选择不能输入的列内容.setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);}}/*** 添加单元格*/public Cell addCell(Excel attr, Row row, T vo, Field field, int column){Cell cell = null;try{// 设置行高row.setHeight(maxHeight);// 根据Excel中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.if (attr.isExport()){// 创建cellcell = row.createCell(column);setDataCell(cell, attr);// 用于读取对象中的属性Object value = getTargetValue(vo, field, attr);String dateFormat = attr.dateFormat();String readConverterExp = attr.readConverterExp();String separator = attr.separator();if (StringUtils.isNotEmpty(dateFormat) && StringUtils.isNotNull(value)){cell.setCellValue(parseDateToStr(dateFormat, value));}else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value)){cell.setCellValue(convertByExp(Convert.toStr(value), readConverterExp, separator));}else if (value instanceof BigDecimal && -1 != attr.scale()){cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());}else if (!attr.handler().equals(ExcelHandlerAdapter.class)){cell.setCellValue(dataFormatHandlerAdapter(value, attr));}else{// 设置列类型setCellVo(value, attr, cell);}addStatisticsData(column, Convert.toStr(value), attr);}}catch (Exception e){log.error("导出Excel失败{}", e);}return cell;}/*** 设置单元格样式* * @param cell 单元格* @param excel 注解信息*/public void setDataCell(Cell cell, Excel excel){CellStyle style = wb.createCellStyle();style.setAlignment(HorizontalAlignment.CENTER);style.setVerticalAlignment(VerticalAlignment.CENTER);style.setBorderRight(BorderStyle.THIN);style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setBorderLeft(BorderStyle.THIN);style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setBorderTop(BorderStyle.THIN);style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setBorderBottom(BorderStyle.THIN);style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());style.setAlignment(excel.align());Font dataFont = wb.createFont();dataFont.setFontName("Arial");dataFont.setFontHeightInPoints((short) 10);dataFont.setColor(excel.color().index);style.setFont(dataFont);cell.setCellStyle(style);}/*** 设置 POI XSSFSheet 单元格提示或选择框* * @param sheet 表单* @param textlist 下拉框显示的内容* @param promptContent 提示内容* @param firstRow 开始行* @param endRow 结束行* @param firstCol 开始列* @param endCol 结束列*/public void setPromptOrValidation(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow,int firstCol, int endCol){DataValidationHelper helper = sheet.getDataValidationHelper();DataValidationConstraint constraint = textlist.length > 0 ? helper.createExplicitListConstraint(textlist) : helper.createCustomConstraint("DD1");CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);DataValidation dataValidation = helper.createValidation(constraint, regions);if (StringUtils.isNotEmpty(promptContent)){// 如果设置了提示信息则鼠标放上去提示dataValidation.createPromptBox("", promptContent);dataValidation.setShowPromptBox(true);}// 处理Excel兼容性问题if (dataValidation instanceof XSSFDataValidation){dataValidation.setSuppressDropDownArrow(true);dataValidation.setShowErrorBox(true);}else{dataValidation.setSuppressDropDownArrow(false);}sheet.addValidationData(dataValidation);}/*** 解析导出值 0=男,1=女,2=未知** @param propertyValue 参数值* @param converterExp 翻译注解* @param separator 分隔符* @return 解析后值*/public static String convertByExp(String propertyValue, String converterExp, String separator){StringBuilder propertyString = new StringBuilder();String[] convertSource = converterExp.split(",");for (String item : convertSource){String[] itemArray = item.split("=");if (StringUtils.containsAny(separator, propertyValue)){for (String value : propertyValue.split(separator)){if (itemArray[0].equals(value)){propertyString.append(itemArray[1] + separator);break;}}}else{if (itemArray[0].equals(propertyValue)){return itemArray[1];}}}return StringUtils.stripEnd(propertyString.toString(), separator);}/*** 反向解析值 男=0,女=1,未知=2** @param propertyValue 参数值* @param converterExp 翻译注解* @param separator 分隔符* @return 解析后值*/public static String reverseByExp(String propertyValue, String converterExp, String separator){StringBuilder propertyString = new StringBuilder();String[] convertSource = converterExp.split(",");for (String item : convertSource){String[] itemArray = item.split("=");if (StringUtils.containsAny(separator, propertyValue)){for (String value : propertyValue.split(separator)){if (itemArray[1].equals(value)){propertyString.append(itemArray[0] + separator);break;}}}else{if (itemArray[1].equals(propertyValue)){return itemArray[0];}}}return StringUtils.stripEnd(propertyString.toString(), separator);}/*** 数据处理器** @param value 数据值* @param excel 数据注解* @return*/public String dataFormatHandlerAdapter(Object value, Excel excel){try{Object instance = excel.handler().newInstance();Method formatMethod = excel.handler().getMethod("format", new Class[] { Object.class, String[].class });value = formatMethod.invoke(instance, value, excel.args());}catch (Exception e){log.error("不能格式化数据 " + excel.handler(), e.getMessage());}return Convert.toStr(value);}/*** 合计统计信息*/private void addStatisticsData(Integer index, String text, Excel entity){if (entity != null && entity.isStatistics()){Double temp = 0D;if (!statistics.containsKey(index)){statistics.put(index, temp);}try{temp = Double.valueOf(text);}catch (NumberFormatException e){}statistics.put(index, statistics.get(index) + temp);}}/*** 创建统计行*/public void addStatisticsRow(){if (statistics.size() > 0){Row row = sheet.createRow(sheet.getLastRowNum() + 1);Set<Integer> keys = statistics.keySet();Cell cell = row.createCell(0);cell.setCellStyle(styles.get("total"));cell.setCellValue("合计");for (Integer key : keys){cell = row.createCell(key);cell.setCellStyle(styles.get("total"));cell.setCellValue(DOUBLE_FORMAT.format(statistics.get(key)));}statistics.clear();}}/*** 获取bean中的属性值** @param vo 实体对象* @param field 字段* @param excel 注解* @return 最终的属性值* @throws Exception*/private Object getTargetValue(T vo, Field field, Excel excel) throws Exception{Object o = field.get(vo);if (StringUtils.isNotEmpty(excel.targetAttr())){String target = excel.targetAttr();if (target.contains(".")){String[] targets = target.split("[.]");for (String name : targets){o = getValue(o, name);}}else{o = getValue(o, target);}}return o;}/*** 以类的属性的get方法方法形式获取值** @param o* @param name* @return value* @throws Exception*/private Object getValue(Object o, String name) throws Exception{if (StringUtils.isNotNull(o) && StringUtils.isNotEmpty(name)){Class<?> clazz = o.getClass();Field field = clazz.getDeclaredField(name);field.setAccessible(true);o = field.get(o);}return o;}/*** 得到所有定义字段*/private void createExcelField(){this.fields = getFields();this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());this.maxHeight = getRowHeight();}/*** 获取字段注解信息*/public List<Object[]> getFields(){List<Object[]> fields = new ArrayList<Object[]>();List<Field> tempFields = new ArrayList<>();tempFields.addAll(Arrays.asList(clazz.getSuperclass().getDeclaredFields()));tempFields.addAll(Arrays.asList(clazz.getDeclaredFields()));for (Field field : tempFields){// 单注解if (field.isAnnotationPresent(Excel.class)){Excel attr = field.getAnnotation(Excel.class);if (attr != null && (attr.type() == Excel.Type.ALL || attr.type() == type)){field.setAccessible(true);fields.add(new Object[] { field, attr });}}// 多注解if (field.isAnnotationPresent(Excels.class)){Excels attrs = field.getAnnotation(Excels.class);Excel[] excels = attrs.value();for (Excel attr : excels){if (attr != null && (attr.type() == Excel.Type.ALL || attr.type() == type)){field.setAccessible(true);fields.add(new Object[] { field, attr });}}}}return fields;}/*** 根据注解获取最大行高*/public short getRowHeight(){double maxHeight = 0;for (Object[] os : this.fields){Excel excel = (Excel) os[1];maxHeight = Math.max(maxHeight, excel.height());}return (short) (maxHeight * 20);}/*** 创建一个工作簿*/public void createWorkbook(){this.wb = new SXSSFWorkbook(500);this.sheet = wb.createSheet();wb.setSheetName(0, sheetName);this.styles = createStyles(wb);}/*** 创建工作表** @param sheetNo sheet数量* @param index 序号*/public void createSheet(int sheetNo, int index){// 设置工作表的名称.if (sheetNo > 1 && index > 0){this.sheet = wb.createSheet();this.createTitle();wb.setSheetName(index, sheetName + index);}}/*** 获取单元格值** @param row 获取的行* @param column 获取单元格列号* @return 单元格值*/public Object getCellValue(Row row, int column){if (row == null){return row;}Object val = "";try{Cell cell = row.getCell(column);if (StringUtils.isNotNull(cell)){if (cell.getCellType() == CellType.NUMERIC || cell.getCellType() == CellType.FORMULA){val = cell.getNumericCellValue();if (DateUtil.isCellDateFormatted(cell)){val = DateUtil.getJavaDate((Double) val); // POI Excel 日期格式转换}else{if ((Double) val % 1 != 0){val = new BigDecimal(val.toString());}else{val = new DecimalFormat("0").format(val);}}}else if (cell.getCellType() == CellType.STRING){val = cell.getStringCellValue();}else if (cell.getCellType() == CellType.BOOLEAN){val = cell.getBooleanCellValue();}else if (cell.getCellType() == CellType.ERROR){val = cell.getErrorCellValue();}}}catch (Exception e){return val;}return val;}/*** 判断是否是空行** @param row 判断的行* @return*/private boolean isRowEmpty(Row row){if (row == null){return true;}for (int i = row.getFirstCellNum(); i < row.getLastCellNum(); i++){Cell cell = row.getCell(i);if (cell != null && cell.getCellType() != CellType.BLANK){return false;}}return true;}/*** 格式化不同类型的日期对象* * @param dateFormat 日期格式* @param val 被格式化的日期对象* @return 格式化后的日期字符*/public String parseDateToStr(String dateFormat, Object val){if (val == null){return "";}String str;if (val instanceof Date){str = DateUtils.parseDateToStr(dateFormat, (Date) val);}else if (val instanceof LocalDateTime){str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDateTime) val));}else if (val instanceof LocalDate){str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDate) val));}else{str = val.toString();}return str;}/*** 获取合并单元格的值** @param sheet* @param row* @param column* @return*/public static String getMergedRegionValue(Sheet sheet, int row, int column) {int sheetMergeCount = sheet.getNumMergedRegions();for (int i = 0; i < sheetMergeCount; i++) {CellRangeAddress ca = sheet.getMergedRegion(i);int firstColumn = ca.getFirstColumn();int lastColumn = ca.getLastColumn();int firstRow = ca.getFirstRow();int lastRow = ca.getLastRow();if (row >= firstRow && row <= lastRow) {if (column >= firstColumn && column <= lastColumn) {Row fRow = sheet.getRow(firstRow);Cell fCell = fRow.getCell(firstColumn);return getCellValues(fCell);}}}return null;}/*** 获取单元格的值** @param fCell* @return*/public static String getCellValues(Cell fCell) {if(fCell == null){return "";}return fCell.toString();}//获取图片信息和所在行号列号，//已扩展，还能获取所在行指定列的数据private static Map<String, PictureData> getPictures(MultipartFile file, String sheetName, InputStream inputStream){String fileName = file.getOriginalFilename();boolean isXlsx = fileName.contains(".xlsx");Map<String, PictureData> map = new HashMap<>();try (InputStream is = inputStream) {Workbook wb;// 重点if (isXlsx) {wb = new XSSFWorkbook(is);List<POIXMLDocumentPart> list = ((XSSFSheet) wb.getSheet(sheetName)).getRelations();
//                Map<String, XSSFPictureData> pictures = getPictures((XSSFSheet) wb.getSheet(sheetName));for (POIXMLDocumentPart part : list) {if (part instanceof XSSFDrawing) {XSSFDrawing drawing = (XSSFDrawing) part;List<XSSFShape> shapes = drawing.getShapes();for (XSSFShape shape : shapes) {XSSFPicture picture = (XSSFPicture) shape;XSSFClientAnchor anchor = picture.getPreferredSize();CTMarker marker = anchor.getFrom();String key = marker.getRow() + "-" + marker.getCol();map.put(key, picture.getPictureData());}}}} else {wb = new HSSFWorkbook(is);List<HSSFShape> list = ((HSSFSheet) wb.getSheet(sheetName)).getDrawingPatriarch().getChildren();for (HSSFShape shape : list) {if (shape instanceof HSSFPicture) {HSSFPicture picture = (HSSFPicture) shape;HSSFClientAnchor cAnchor = (HSSFClientAnchor) picture.getAnchor();PictureData pdata = picture.getPictureData();String key = cAnchor.getRow1() + "-" + cAnchor.getCol1(); //列号（左上角）map.put(key, pdata);}}}return map;} catch (Exception e) {throw new ServiceException("解析图片异常！");}}
}

如上就是整个导入图片的操作，先获取excel中图片和所在的列，在读取excel时判断该列在实体映射中是否有getPicture = true的标识，有就用当前列获取开始取到的图片信息就可以了。

导入可能遇到的问题记录

报错信息如下：

minio The field file exceeds its maximum permitted size of 1048576 bytes.

可以拉取后看我调用的方法，一目了然。

resource下的模板下载，可查看文章：模板下载
带图片的数据导出到excel，可查看文章：Java中带图片的数据导出到excel

死鬼~看完了来个三连哦！O.O`

反手就是一个赞赞赞——————————奥里给

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Java带图片的excel数据导入

带图片的EXCEL数据导入

导入可能遇到的问题记录

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