【JAVA】easyexcel 导出excel文件带多个图片

最终效果

 pom版本

         com.alibaba    easyexcel    3.0.5 

实现代码

package com.alibaba.easyexcel.test.demo.write;import com.alibaba.easyexcel.test.util.TestFileUtil;import com.alibaba.excel.EasyExcel;import com.alibaba.excel.metadata.data.ClientAnchorData;import com.alibaba.excel.metadata.data.ImageData;import com.alibaba.excel.metadata.data.WriteCellData;import com.alibaba.excel.util.FileUtils;import com.alibaba.excel.write.style.column.AutoColumnWidthStyleStrategy;import org.apache.commons.collections4.CollectionUtils;import org.junit.Test;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.concurrent.atomic.AtomicReference;public class ImageExportTest {        @Test    public void imageWrite() throws Exception {        //文件最后生成的路径        String fileName = TestFileUtil.getPath() + "imageWrite.xlsx";        System.out.println(fileName);        //测试用的图片路径        String imagePath = TestFileUtil.getPath() + "converter" + File.separator + "img.jpg";        String imagePath2 = TestFileUtil.getPath() + "converter" + File.separator + "img2.jpeg";        //数据列表Demo        List demoDataList = new ArrayList<>();        //图片路径        List path1 = new ArrayList<>();        path1.add(imagePath);        List path2 = new ArrayList<>();        path2.add(imagePath);        path2.add(imagePath2);        List path3 = new ArrayList<>();        path3.add(imagePath);        path3.add(imagePath);        path3.add(imagePath2);        List path4 = new ArrayList<>();        path4.add(imagePath);        path4.add(imagePath2);        path4.add(imagePath);        path4.add(imagePath2);        demoDataList.add(new ImageDemoData("王离", path1));        demoDataList.add(new ImageDemoData("杨开", path2));        demoDataList.add(new ImageDemoData("欧阳微微", path3));        demoDataList.add(new ImageDemoData("上官婉儿", path4));        genImageExcel(demoDataList, fileName);    }        private void genImageExcel(List demoDataList, String fileName) {        if (CollectionUtils.isEmpty(demoDataList)) {            return;        }        //图片列最大图片数        AtomicReference maxImageSize = new AtomicReference<>(0);        demoDataList.forEach(item -> {            if (CollectionUtils.isNotEmpty(item.getImagePathList()) && item.getImagePathList().size() > maxImageSize.get()) {                maxImageSize.set(item.getImagePathList().size());            }        });        //设置列长度所用类        AutoColumnWidthStyleStrategy longWidth = new AutoColumnWidthStyleStrategy();        demoDataList.forEach(item -> {            WriteCellData writeCellData = new WriteCellData<>();            if (CollectionUtils.isNotEmpty(item.getImagePathList())) {                //每张图片间距                Integer splitWidth = 2;                //每张图片的长度                Integer imageWidth = 80;                //图片列的最大长度                Integer sumWidth = maxImageSize.get() * (imageWidth + splitWidth);                List imageDataList = new ArrayList<>();                List imagePathList = item.getImagePathList();                for (int i = 1; i <= imagePathList.size(); i++) {                    String path = imagePathList.get(i - 1);                    Integer left = imageWidth * (i - 1) + i * splitWidth;                    Integer right = sumWidth - imageWidth - left;                    ImageData imageData = new ImageData();                    try {                        imageData.setImage(FileUtils.readFileToByteArray(new File(path)));                    } catch (IOException e) {                        e.printStackTrace();                    }                    imageData.setImageType(ImageData.ImageType.PICTURE_TYPE_PNG);                    //距离单元格顶部距离                    imageData.setTop(1);                    //距离单元格底部距离                    imageData.setBottom(1);                    //距离单元格左边距离                    imageData.setLeft(left);                    //距离单元格右边距离                    imageData.setRight(right);                    imageData.setAnchorType(ClientAnchorData.AnchorType.DONT_MOVE_DO_RESIZE);                    imageDataList.add(imageData);                }                writeCellData.setImageDataList(imageDataList);                Map zdyColumnWidth = new HashMap<>();                //图片列名称，对应导出对象的列名称，图片列长度                zdyColumnWidth.put("上传图片", sumWidth / 6);                longWidth.setZdyColumnWidth(zdyColumnWidth);            }            item.setWriteCellDataFile(writeCellData);        });        //写入数据        EasyExcel.write(fileName, ImageDemoData.class).registerWriteHandler(longWidth).sheet().doWrite(demoDataList);    }}

package com.alibaba.easyexcel.test.demo.write;import com.alibaba.excel.annotation.ExcelIgnore;import com.alibaba.excel.annotation.ExcelProperty;import com.alibaba.excel.annotation.write.style.ContentRowHeight;import com.alibaba.excel.metadata.data.WriteCellData;import lombok.EqualsAndHashCode;import lombok.Getter;import lombok.Setter;import java.util.List;@Getter@Setter@EqualsAndHashCode@ContentRowHeight(40)public class ImageDemoData {        @ExcelProperty(value = "用户名称")    private String test;        @ExcelIgnore    private List imagePathList;        @ExcelProperty(value = "上传图片")    private WriteCellData writeCellDataFile;    public ImageDemoData() {    }    public ImageDemoData(String test, List imagePathList) {        this.test = test;        this.imagePathList = imagePathList;    }    public ImageDemoData(List imagePathList) {        this.imagePathList = imagePathList;    }}

package com.alibaba.excel.write.style.column;import com.alibaba.excel.enums.CellDataTypeEnum;import com.alibaba.excel.metadata.Head;import com.alibaba.excel.metadata.data.WriteCellData;import com.alibaba.excel.util.MapUtils;import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;import org.apache.commons.collections4.CollectionUtils;import org.apache.poi.ss.usermodel.Cell;import java.util.HashMap;import java.util.List;import java.util.Map;public class AutoColumnWidthStyleStrategy extends AbstractColumnWidthStyleStrategy {    private static final int MAX_COLUMN_WIDTH = 255;    //自定义列的列宽    private Map zdyColumnWidth = MapUtils.newHashMapWithExpectedSize(2);    private final Map> cache = MapUtils.newHashMapWithExpectedSize(8);    @Override    protected void setColumnWidth(WriteSheetHolder writeSheetHolder, List> cellDataList, Cell cell,      Head head,      Integer relativeRowIndex, Boolean isHead) {        boolean needSetWidth = isHead || !CollectionUtils.isEmpty(cellDataList);        if (!needSetWidth) {            return;        }        if (zdyColumnWidth.containsKey(cell.toString())) {            writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), zdyColumnWidth.get(cell.toString()) * 256);            return;        }        Map maxColumnWidthMap = cache.get(writeSheetHolder.getSheetNo());        if (maxColumnWidthMap == null) {            maxColumnWidthMap = new HashMap(16);            cache.put(writeSheetHolder.getSheetNo(), maxColumnWidthMap);        }        Integer columnWidth = dataLength(cellDataList, cell, isHead);        if (columnWidth < 0) {            return;        }        if (columnWidth > MAX_COLUMN_WIDTH) {            columnWidth = MAX_COLUMN_WIDTH;        }        Integer maxColumnWidth = maxColumnWidthMap.get(cell.getColumnIndex());        if (maxColumnWidth == null || columnWidth > maxColumnWidth) {            maxColumnWidthMap.put(cell.getColumnIndex(), columnWidth);            writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), columnWidth * 256);        }    }    private Integer dataLength(List> cellDataList, Cell cell, Boolean isHead) {        if (isHead) {            return cell.getStringCellValue().getBytes().length;        }        WriteCellData cellData = cellDataList.get(0);        CellDataTypeEnum type = cellData.getType();        if (type == null) {            return -1;        }        switch (type) {            case STRING:                return cellData.getStringValue().getBytes().length;            case BOOLEAN:                return cellData.getBooleanValue().toString().getBytes().length;            case NUMBER:                return cellData.getNumberValue().toString().getBytes().length;            default:                return -1;        }    }    public void setZdyColumnWidth(Map zdyColumnWidth) {        this.zdyColumnWidth = zdyColumnWidth;    }}

来源地址：https://blog.csdn.net/xiaosemei/article/details/127671561