SpringBoot集成easypoi实现execl导出

news2024/11/24 19:49:10

 <!--easypoi依赖，excel导入导出-->
 <dependency>
     <groupId>cn.afterturn</groupId>
     <artifactId>easypoi-spring-boot-starter</artifactId>
     <version>4.4.0</version>
 </dependency>

通过@Exce注解设置标头名字和单元格宽度；
导出实体设置:

@Data
public class ExportOrder implements Serializable {
   /**
    * 订单号
    */
   @Excel(name = "订单号", width = 10.0)
   private String orderId;
   /**
    * 产品名称
    */
   @Excel(name = "产品名称", width = 10.0)
   private String productName;
   /**
    * 品牌
    */
   @Excel(name = "品牌", width = 10.0)
   private String brandName;

   /**
    * 分类
    */
   @Excel(name = "分类", width = 10.0)
   private String type;

   /**
    * 数量
    */
   @Excel(name = "数量", width = 10.0)
   private Long orderNumber;

   /**
    * 付款时间
    */
   @Excel(name = "付款时间", width = 10.0)
   private String payTime;

   /**
    * 付款金额
    */
   @Excel(name = "付款金额", width = 10.0)
   private BigDecimal payAmount;

   /**
    * 订单状态
    */
   @Excel(name = "订单状态", width = 10.0)
   private String status;
   /**
    * 操作
    */
   @Excel(name = "操作", width = 10.0)
   private String orderOpt;

   /**
    * 下单时间
    */
   @Excel(name = "下单时间", width = 10.0)
   private String createTime;
}

Controller层

@GetMapping("export")
   public void exportUsers(OrderEntity orderEntity, HttpServletResponse response) {
       orderManagerService.exportOrders(orderEntity,response);
   }

Service层

@Override
   public void exportOrders(OrderEntity orderEntity,HttpServletResponse response) {
       try {
           //从数据库查询到数据
           List<OrderDao> orderDaoList = orderMapper.selectOrders(orderEntity);
           List<SupplyChainOrdersVo> supplyChainOrdersVos = null;
           if (CollectionUtil.isEmpty(orderDaoList)) {
               log.error("order表中未查询到对应数据");
               return;
           }
           supplyChainOrdersVos = new ArrayList<>(orderDaoList.size());
          	.......

           //设置信息头，告诉浏览器内容为excel类型
           response.setHeader("content-Type", "application/vnd.ms-excel");
           //sheet名称
           String sheetName = "订单";
           response.setCharacterEncoding("UTF-8");
           //设置下载名称
           response.setHeader("Content-Disposition", "attachment;filename="+ URLEncoder.encode("订单表.xls","UTF-8"));
           //字节流输出
           ServletOutputStream out = response.getOutputStream();
           //设置excel参数
           ExportParams params = new ExportParams();
           //设置sheet名
           params.setSheetName(sheetName);
           //设置标题
           params.setTitle("订单表");

           //转成对应的类型;要不然会报错，虽然也可以导出成功。
           List<ExportOrder> exportUsers = changeType(supplyChainOrdersVos);
           //导入excel
           Workbook workbook = ExcelExportUtil.exportExcel(params, ExportOrder.class,exportUsers);
           //写入
           workbook.write(out);
       } catch (Exception e) {
           e.printStackTrace();
       }
   }