pom依赖:
XML
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>3.1.0</version>
</dependency>
实体类:
java
package com.aicut.monitor.vo;
import com.aicut.monitor.utils.UrlImageConverter;
import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentRowHeight;
import com.fasterxml.jackson.annotation.JsonFormat;
import io.swagger.v3.oas.annotations.media.Schema;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.Date;
/**
* 豁口图片视图类
* @author zhangzhi
*/
@ExcelIgnoreUnannotated
@ContentRowHeight(120)
@Getter
@Setter
@ToString
public class CutterImageVO extends BaseVO{
private static final long serialVersionUID = 1L;
/**
* 主键
*/
@ExcelIgnore
@Schema(description="主键")
private Long id;
/**
* 工厂编码
*/
@Schema(description="工厂编码")
@ExcelProperty(value = "工厂编码")
private String factoryCode;
/**
* 产线编码
*/
@Schema(description="产线编码")
@ExcelProperty(value = "产线编码")
private String productionLineCode;
/**
* 设备编号
*/
@Schema(description="设备编号")
@ExcelProperty(value = "设备编号")
private String deviceNumber;
/**
* 设备名称
*/
@Schema(description="设备名称")
@ExcelProperty(value = "设备名称")
private String deviceName;
/**
* 分切刀编号
*/
@Schema(description="分切刀编号")
@ExcelProperty(value = "分切刀编号")
private String cutterCode;
/**
* 是否磨损
*/
@Schema(description="是否磨损")
@ExcelProperty(value = "是否磨损")
private Integer wearOrNot;
/**
* 检测时间
*/
@Schema(description="检测时间")
@ExcelProperty(value = "检测时间")
@JsonFormat(timezone="GMT+8", pattern="yyyy-MM-dd HH:mm:ss")
@DateTimeFormat(pattern="yyyy-MM-dd HH:mm:ss")
@ColumnWidth(20)
private Date detectionTime;
/**
* 图片路径
*/
@Schema(description="图片路径")
@ExcelProperty(value = "豁口图片",converter = UrlImageConverter.class)
@ColumnWidth(20)
private String imageUrl;
/**
* 建议操作
*/
@Schema(description="建议操作")
@ExcelProperty(value = "建议操作")
private String remark;
}
导出excel部分代码:
java
String fileName = "豁口图片数据.xlsx";
fileName = URLEncoder.encode(fileName, "UTF-8");
response.setContentType("application/vnd.ms-excel");
response.setCharacterEncoding("utf8");
response.setHeader("Content-disposition", "attachment;filename=" + fileName);
try {
EasyExcel.write(response.getOutputStream(), CutterImageVO.class)
.sheet("豁口图片数据")
.doWrite(cutterImageVOList);
}catch (Exception e){
log.error(e.getMessage());
}
String类型图片转换器:
java
package com.aicut.monitor.utils;
import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.metadata.GlobalConfiguration;
import com.alibaba.excel.metadata.data.WriteCellData;
import com.alibaba.excel.metadata.property.ExcelContentProperty;
import com.alibaba.excel.util.IoUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.ObjectUtils;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
/**
* @Description 图片处理
* @Author songwp
* @Date 2023/3/30 15:04
**/
@Slf4j
public class UrlImageConverter implements Converter<String> {
public static int urlConnectTimeout = 2000;
public static int urlReadTimeout = 6000;
@Override
public Class<?> supportJavaTypeKey() {
return String.class;
}
@Override
public WriteCellData<?> convertToExcelData(String url, ExcelContentProperty contentProperty,
GlobalConfiguration globalConfiguration) throws IOException {
InputStream inputStream = null;
try {
URL value = new URL(url);
if (ObjectUtils.isEmpty(value)){
return new WriteCellData<>("图片链接为空");
}
URLConnection urlConnection = value.openConnection();
urlConnection.setConnectTimeout(urlConnectTimeout);
urlConnection.setReadTimeout(urlReadTimeout);
inputStream = urlConnection.getInputStream();
byte[] bytes = IoUtils.toByteArray(inputStream);
return new WriteCellData<>(bytes);
}catch (Exception e){
log.info("图片获取异常",e);
return new WriteCellData<>("图片获取异常");
} finally {
if (inputStream != null) {
inputStream.close();
}
}
}
}
导出效果: