Exportar imágenes en Excel:
1. Entidad de datos
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.*;
import lombok.Data;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import java.net.URL;
@Data
@HeadRowHeight(25)
@ContentRowHeight(120)
public class ExcelDB {
@ColumnWidth(35)
@ExcelProperty(value = "规格")
@ContentFontStyle(fontName = "Calibri", fontHeightInPoints = 12)
@ContentStyle(wrapped = true, horizontalAlignment = HorizontalAlignment.CENTER,
verticalAlignment = VerticalAlignment.CENTER) // 自动换行、水平、垂直居中
private String name;
@ColumnWidth(35)
@ExcelProperty("图片")
private URL imgUrl;
@ColumnWidth(35)
@ExcelProperty(value = "介绍")
@ContentFontStyle(fontName = "Calibri", fontHeightInPoints = 12)
@ContentStyle(wrapped = true, horizontalAlignment = HorizontalAlignment.CENTER,
verticalAlignment = VerticalAlignment.CENTER) // 自动换行、水平、垂直居中
private String introduce;
}
2. Descargar desde la web
import com.alibaba.excel.EasyExcel;
import com.example.demo02.entity.ExcelDB;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
@RestController
@RequestMapping("/excel")
public class ExcelController {
@PostMapping("exportExcel")
public void exportExcel(HttpServletResponse response){
List<ExcelDB> excelDBS = new ArrayList<>();
// 测试数据
ExcelDB excelDB = new ExcelDB();
excelDB.setName("数据1");
excelDB.setIntroduce("数据介绍");
try {
excelDB.setImgUrl(new URL("http://www.baidu.com/img/bdlogo.png"));
} catch (MalformedURLException e) {
e.printStackTrace();
}
excelDBS.add(excelDB);
// 请求头设置
response.setHeader("Content-Disposition", "attachment;filename=" + "XXXXX.xlsx");
response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
response.setContentType("application/vnd.ms-excel;charset=UTF-8");
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
response.setCharacterEncoding("UTF-8");
response.setHeader("content-Type", "octets-stream");
try {
EasyExcel.write(response.getOutputStream(), ExcelDB.class).sheet("模板").doWrite(excelDBS);
} catch (IOException e) {
e.printStackTrace();
}
}
}