easyExcel导出图片

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最新推荐文章于 2025-04-08 16:21:08 发布

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文章标签： java excel

本文链接：https://blog.youkuaiyun.com/lol19950605/article/details/136027832

版权

本文介绍了如何在Java代码中使用EasyExcel库处理Excel导出，关注于如何在导出的Excel文件中包含图片，支持本地服务器、云服务器等多种图片来源，并详细展示了如何设置字段宽度和使用StringImageConverter进行图片转换。

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有的时候,导出的excel文件中会带有图片,可能是项目内置的,可能是在本地服务器存放的,也可能是在云服务器上,如何在导出Excel时兼容这几种情况呢?

实体类

package com.minghe.jiaozhu.model.dto;
 
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentRowHeight;
import com.alibaba.excel.annotation.write.style.ContentStyle;
import com.alibaba.excel.annotation.write.style.HeadRowHeight;
import com.alibaba.excel.converters.string.StringImageConverter;
import com.alibaba.excel.enums.BooleanEnum;
import com.alibaba.excel.enums.poi.BorderStyleEnum;
import com.alibaba.excel.enums.poi.VerticalAlignmentEnum;
import lombok.Data;
 
@Data
@HeadRowHeight(30)//设置表头的行高度
@ContentRowHeight(60)//设置单元格的高度
@ColumnWidth(100 / 8)
//属性注释在最下
@ContentStyle(wrapped = BooleanEnum.TRUE, verticalAlignment = VerticalAlignmentEnum.CENTER, borderBottom = BorderStyleEnum.THIN, borderLeft = BorderStyleEnum.THIN, borderRight = BorderStyleEnum.THIN, borderTop = BorderStyleEnum.THIN)
public class ExportHeadersValueImageExcel {
//cellWritervalue对应ValueCellWriteHandler里的cellWritervalue
    /**
     * 金
     */
    @ExcelProperty(value = {"七灵图","总纲","五行", "金"})
    private String jin;
    /**
     * 木
     */
    @ExcelProperty(value = {"七灵图","${cellWriterValue}","五行", "木"})
    private String mu;
    /**
     * 水
     */
    @ExcelProperty(value = {"七灵图","${cellWriterValue}","五行", "水"})
    private String shui;
    /**
     * 火
     */
    @ExcelProperty(value = {"七灵图","${cellWriterValue}","五行", "火"})
    private String huo;
    /**
     * 土
     */
    @ExcelProperty(value = {"七灵图","${cellWriterValue}","五行", "土"})
    private String tu;
    /**
     * 阴
     */
    @ExcelProperty(value = {"七灵图","${cellWriterValue}","两仪", "阴"})
    private String yin;
    /**
     * 阳
     */
    @ExcelProperty(value = {"七灵图","${cellWriterValue}","两仪", "阳"})
    private String yang;
    /**
     * 如果图片用string类型 必须指定转换器，string默认转换成string
     */
    @ExcelProperty(value = {"七灵图","${cellWriterValue}", "两仪","灵图"},converter = StringImageConverter.class)
    @ColumnWidth(30)//图片的列宽单独设置
    private String imagePath;
    //有五种写入图片的方式,url是写图片的地址.测试中发现InputStream转换有问题 实际应用中可以看看具体什么问题
    /*    private File file;
    private InputStream inputStream;
    private String string;
    private byte[] byteArray;
    private URL url;*/
 
}

代码

    public void exportHeadersValueImage(String path) {

        String sheetName = "sheetName";
        String imagePath = "D:\\test\\miao.jpg";
        List<ExportHeadersValueImageExcel> excels = new ArrayList<>();
        ExportHeadersValueImageExcel imageExcel = new ExportHeadersValueImageExcel();
        imageExcel.setJin("10");
        imageExcel.setMu("2.00");
        imageExcel.setShui("3.00");
        imageExcel.setHuo("4.00");
        imageExcel.setTu("5.00");
        imageExcel.setYin("6.00");
        imageExcel.setYang("7.01");
        imageExcel.setImagePath(imagePath);
        excels.add(imageExcel);
        EasyExcel.write(path, ExportHeadersValueImageExcel.class)
                .sheet(sheetName).doWrite(excels);
    }

效果

实体类中,字段上可以加注解@ColumnWidth(30)来单独设置该字段的列宽,@ExcelProperty注解上要指定converter @ExcelProperty(value = {"七灵图", "两仪","灵图"},converter = StringImageConverter.class)

图片的方式有五种,文件,文件流,string(我理解为path),字节流,url(适用于图片在云端存储的)

/* private File file;
private InputStream inputStream;
private String string;
private byte[] byteArray;
private URL url;*/

git仓库:导入导出: 导入导出的实例

更多导出场景:多场景easyExcel导出excel文件(一)-优快云博客

读取excel场景:多场景easyExcel读取excel文件(二)-优快云博客

根据模板填充excel:多场景easyExcel根据模板填充excel文件(三)-优快云博客