esayExcel根据模板导出包含图片

1、效果

2、模板

3、工具类代码

  /**
   * 根据模板填充
   * @param response
   * @param templateStream 模板文件流
   * @param map 模板文件所需要的参数
   * @param list list循环模板参数
   * @throws IOException
   */
  public static void templateFilling(HttpServletRequest servletRequest,HttpServletResponse response, InputStream templateStream, Map<String, Object> map, List<FillWrapper> list,String name) throws IOException {
    try {
      if (templateStream == null) {
        throw new FileNotFoundException("未找到模板文件");
      }
      // 生成目标文件
      ExcelWriter excelWriter =
              EasyExcel.write(response.getOutputStream()).withTemplate(templateStream).build();
      WriteSheet writeSheet = EasyExcel.writerSheet().build();
      // 每次都会重新生成新的一行，而不是使用下面的空行
      FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
      excelWriter.fill(map, writeSheet);
      // 第二种占位符替换
      for (FillWrapper fillWrapper : list) {
        excelWriter.fill(fillWrapper, fillConfig, writeSheet);
      }
      excelWriter.finish();

      /*兼容IE和其他浏览器导出文件名乱码的问题*/
      name = downloadCommFileName(name, servletRequest);
      // 设置响应头
      response.setContentType("application/vnd.ms-excel"); // 设置文本内省
      response.setCharacterEncoding("utf-8"); // 设置字符编码
      response.setHeader("Content-disposition", "attachment;fileName="+name+".xlsx");
      // 关闭模板流
      templateStream.close();
    } catch (FileNotFoundException e) {
      // 处理文件未找到异常
      response.setStatus(HttpServletResponse.SC_NOT_FOUND);
      // 返回适当的错误消息
      response.getWriter().write("未找到模板文件");
    } catch (Exception e) {
      // 处理其他异常
      response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
      // 返回适当的错误消息
      response.getWriter().write("内部服务器错误");
    }
  }

4、实体类

package com.skybird.iot.addons.tpm.care.backend.jdo;

import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentRowHeight;
import lombok.EqualsAndHashCode;

import java.net.URL;

@EqualsAndHashCode
@ContentRowHeight(15)
@ColumnWidth(15)
public class DeviceCareOrderTemplateExcelDao {

  @ExcelProperty("保养部位")
  private String part;

  @ExcelProperty("保养项目")
  private String project;

  @ExcelProperty("作业方法")
  private String method;

  @ExcelProperty("保养标准")
  private String standard;

  @ExcelProperty("图片说明")
  private URL viewImage;

  @ExcelProperty("保养结果")
  private String result;

  @ExcelProperty("备注")
  private String remark;

  public String getPart() {
    return part;
  }

  public void setPart(String part) {
    this.part = part;
  }

  public String getProject() {
    return project;
  }

  public void setProject(String project) {
    this.project = project;
  }

  public String getMethod() {
    return method;
  }

  public void setMethod(String method) {
    this.method = method;
  }

  public String getStandard() {
    return standard;
  }

  public void setStandard(String standard) {
    this.standard = standard;
  }

  public URL getViewImage() {
    return viewImage;
  }

  public void setViewImage(URL viewImage) {
    this.viewImage = viewImage;
  }

  public String getResult() {
    return result;
  }

  public void setResult(String result) {
    this.result = result;
  }

  public String getRemark() {
    return remark;
  }

  public void setRemark(String remark) {
    this.remark = remark;
  }
}

5、URL数据说明

viewImage字段数据需要组装成图片地址

6、接口

@RequestMapping("/exportTemplate")
  public void exportTemplate(HttpServletRequest request, HttpServletResponse response) throws IOException {
    String data = request.getParameter("data");
    Document filter = DocuLib.parseDecode(data);
    String id = DocuLib.getID(filter);

    Document entity = DBUtils.findByID(QDeviceCareOrder.collectionName, id);
    // 获取协议（例如 http: 或 https:）
    String protocol = request.getScheme();

    // 获取主机名（例如 localhost）
    String hostname = request.getServerName();

    // 获取端口号（如果有）
    int port = request.getServerPort();

    // 构建前缀部分
    StringBuilder baseUrl = new StringBuilder();
    baseUrl.append(protocol).append("://").append(hostname);

    // 如果有端口号，添加端口号
    if ((protocol.equals("http") && port != 80) || (protocol.equals("https") && port != 443)) {
      baseUrl.append(":").append(port);
    }

    // 获取上下文路径（例如 /yoren）
    String contextPath = request.getContextPath();
    if (contextPath != null && !contextPath.isEmpty()) {
      baseUrl.append(contextPath);
    }
    String head = baseUrl+"/";

    InputStream templateStream =
            DeviceCareOrderWeb.class.getResourceAsStream("/templates/deviceCare.xlsx");

    List<Document> itemList = DocuLib.getList(entity, "itemList");
    List<DeviceCareOrderTemplateExcelDao> excelList = new ArrayList<>();
    for (Document item : itemList) {
      DeviceCareOrderTemplateExcelDao dao = new DeviceCareOrderTemplateExcelDao();
      dao.setPart(DocuLib.getStr(item, "part"));
      dao.setProject(DocuLib.getStr(item, "project"));
      dao.setMethod(DocuLib.getStr(item, "method"));
      dao.setStandard(DocuLib.getStr(item, "standard"));
      String viewImage = DocuLib.getStr(item, "view_image");
      dao.setViewImage(StrUtil.isNotEmpty(viewImage)?new URL(head + "gridfs/" + viewImage):null);
      dao.setResult(StrUtil.isNotEmpty(DocuLib.getStr(item, "result")) ? DocuLib.getStr(item, "result").equals("finish") ? "完成" : "异常" : "");
      dao.setRemark(DocuLib.getStr(item, "remark"));
      excelList.add(dao);
    }

    List<Document> fileImageList = DocuLib.getList(entity, "fileImageList");
    List<DeviceCareOrderTemplateExcelDao> ImageList = new ArrayList<>();
    for (Document item : fileImageList) {
      DeviceCareOrderTemplateExcelDao dao = new DeviceCareOrderTemplateExcelDao();
      dao.setViewImage(new URL(head + DocuLib.getStr(item, "url")));
      ImageList.add(dao);
    }

    Map<String, Object> map = new HashMap<>();
    map.put("code", DocuLib.getStr(entity,"code"));
    map.put("name", DocuLib.getStr(entity,"name"));
    map.put("deviceName", DocuLib.getStr(entity,"device.name"));

    String start = StrUtil.isNotEmpty(DocuLib.getStr(entity,"planDateBetween.start"))
            ? DocuLib.getStr(entity,"planDateBetween.start")
            : "";

    String end = StrUtil.isNotEmpty(DocuLib.getStr(entity,"planDateBetween.end"))
            ? DocuLib.getStr(entity,"planDateBetween.end")
            : "";
    map.put("time", start + "~" + end);
    map.put("workTimeBegin", DocuLib.getStr(entity,"workTimeBegin"));
    map.put("workTimeEnd", DocuLib.getStr(entity,"workTimeEnd"));
    map.put("workTimeHour", DocuLib.getStr(entity,"workTimeHour")+" 小时");
    map.put("remark", DocuLib.getStr(entity,"remark"));
    map.put("createUserName", DocuLib.isNotEmpty(DocuLib.getDocu(entity,"createUser"))?DocuLib.getStr(entity,"createUser.userName")+"-"+DocuLib.getStr(entity,"createUser.name"):"");
    map.put("createDate", DateUtil.format(DocuLib.getDate(entity, "create_date"), "yyyy-MM-dd HH:mm:ss.SSS"));
    map.put("careUserName", DocuLib.isNotEmpty(DocuLib.getDocu(entity,"careUser"))?DocuLib.getStr(entity,"careUser.userName")+"-"+DocuLib.getStr(entity,"careUser.name"):"");
    map.put("startTime", DateUtil.format(DocuLib.getDate(entity, "start_time"), "yyyy-MM-dd HH:mm:ss.SSS"));
    map.put("auditUserName", DocuLib.isNotEmpty(DocuLib.getDocu(entity,"auditUser"))?DocuLib.getStr(entity,"auditUser.userName")+"-"+DocuLib.getStr(entity,"auditUser.name"):"");
    map.put("auditTime", DateUtil.format(DocuLib.getDate(entity, "audit_time"), "yyyy-MM-dd HH:mm:ss.SSS"));
    List<FillWrapper> list = new ArrayList<>();
    if (CollUtil.isNotEmpty(excelList)) {
      list.add(new FillWrapper("dto", excelList));
    }
    if (CollUtil.isNotEmpty(ImageList)) {
      list.add(new FillWrapper("row", ImageList));
    }
    templateFilling(request,response,templateStream,map,list,StrUtil.join("-", "设备保养详情", System.currentTimeMillis()));
  }