使用 hutool包进行excel导出

这个很简单直接参考代码即可

/**
 * 文件导出 excel
 */
public void exportFile(HttpServletResponse response) throws IOException {
    ExcelWriter writer = ExcelUtil.getWriter();
    String time = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
    // 设置表名
    String excelName="导出文件"+time+".xls";
    // 设置表头
    List<Object> header= CollectionUtil.newArrayList("编号","姓名","年龄","生日","性别");
    // 使用 mybatis-plus 快速查询数据
    Collection<UserEntity> userList = userMapper.selectList(new QueryWrapper<UserEntity>());
    // 输出数据设置
    List<List<Object>> rows=userList.stream().map(a->{
        List<Object> list=new ArrayList<>(0);
        list.add(a.getId());
        list.add(a.getUsername());
        list.add(a.getAge());
        list.add(a.getBirth());
        list.add(a.getGender());
        return list;
    }).collect(Collectors.toList());
    // 数据导出
    writer.writeHeadRow(header).write(rows==null?new ArrayList<List<Object>>():rows);
    response.setContentType("application/vnd.ms-excel;charset=utf-8");
    response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(excelName, "utf-8"));
    ServletOutputStream out = response.getOutputStream();
    // 关闭连接
    writer.flush(out).close();
}

根据业务相应的改动就行

标签：writer,list,excel,导出,hutool,add,new,response
来源： https://www.cnblogs.com/2393920029-qq/p/16314550.html