net npoi将List<实体>导出excel的最简单方法

只是临时导数据用的。方便。最基本的方法，  
[HttpGet]
        [Route("ExportEnterprise")]
        public BaseResponse ExportEnterprise()
        {
            IWorkbook workbook = new HSSFWorkbook();
            ISheet sheet = workbook.CreateSheet("onesheet");
            IRow row0 = sheet.CreateRow(0);
            row0.CreateCell(0).SetCellValue("顺序号");
            row0.CreateCell(1).SetCellValue("企业名");
            row0.CreateCell(2).SetCellValue("行业门类");
            row0.CreateCell(3).SetCellValue("行业大类");
            row0.CreateCell(4).SetCellValue("经营属地");
            row0.CreateCell(5).SetCellValue("法人");
            row0.CreateCell(6).SetCellValue("法人手机");
            row0.CreateCell(7).SetCellValue("法人固话");
            row0.CreateCell(8).SetCellValue("日常联系人");
            row0.CreateCell(9).SetCellValue("日常联系人手机");
            row0.CreateCell(10).SetCellValue("日常联系人电话");
            row0.CreateCell(11).SetCellValue("安全人");
            row0.CreateCell(12).SetCellValue("安全人手机");
            row0.CreateCell(13).SetCellValue("安全人电话");
            row0.CreateCell(14).SetCellValue("生产人");
            row0.CreateCell(15).SetCellValue("生产人手机");
            row0.CreateCell(16).SetCellValue("生产人电话");
            row0.CreateCell(17).SetCellValue("技术人");
            row0.CreateCell(18).SetCellValue("技术人手机");
            row0.CreateCell(19).SetCellValue("技术人电话");
            row0.CreateCell(20).SetCellValue("综合人");
            row0.CreateCell(21).SetCellValue("综合人电话");
            var enterprises = _enterpriseService.GetEnterprisesOfTest().ToList();
            var lineNo = 1;
            foreach (var enterprise in enterprises)
            {
                IRow row = sheet.CreateRow(lineNo);
                row.CreateCell(0).SetCellValue(lineNo);
                row.CreateCell(1).SetCellValue(enterprise.EnterpriseName);
                var doorDescr = _industryCategoryService.GetDescriptionBy(enterprise.IndustryCategoryCode);
                row.CreateCell(2).SetCellValue(doorDescr);
                var industryGeneraDescr = _industryCategoryService.GetDescriptionBy(enterprise.IndustryGeneraCode);
                row.CreateCell(3).SetCellValue(industryGeneraDescr);
                row.CreateCell(4).SetCellValue(_administrativeDivisionService.GetDescriptionBy(enterprise.BusinessAddressDivisonCode));
                row.CreateCell(5).SetCellValue(enterprise.LegalPersonName);
                row.CreateCell(6).SetCellValue(enterprise.LegalPersonPhone);
                row.CreateCell(7).SetCellValue(enterprise.LegalPersonFixedPhone);
                row.CreateCell(8).SetCellValue(enterprise.DailyContacts);
                row.CreateCell(9).SetCellValue(enterprise.DailyContactsPhone);
                row.CreateCell(10).SetCellValue(enterprise.DailyContactsFixedPhone);
                row.CreateCell(11).SetCellValue(enterprise.SafetyOrganizationManagerName);
                row.CreateCell(12).SetCellValue(enterprise.SafetyOrganizationManagerPhone);
                row.CreateCell(13).SetCellValue(enterprise.SafetyOrganizationManagerFox);
                row.CreateCell(14).SetCellValue(enterprise.ProductionManagerName);
                row.CreateCell(15).SetCellValue(enterprise.ProductionManagerPhone);
                row.CreateCell(16).SetCellValue(enterprise.ProductionManagerFixedPhone);
                row.CreateCell(17).SetCellValue(enterprise.InformationTechnologyPrincipal);
                row.CreateCell(18).SetCellValue(enterprise.InformationTechnologyPrincipalPhone);
                row.CreateCell(19).SetCellValue(enterprise.InformationTechnologyPrincipalLandlineTelephone);
                var contact = string.Empty;
                var contactPhone = string.Empty;
                if (!string.IsNullOrEmpty(enterprise.LegalPersonName))
                {
                    contact = enterprise.LegalPersonName;
                    if (!string.IsNullOrEmpty(enterprise.LegalPersonPhone))
                    {
                        contactPhone = enterprise.LegalPersonPhone;
                    }
                    else
                    {
                        contactPhone = enterprise.LegalPersonFixedPhone;
                    }
                }else if (!string.IsNullOrEmpty(enterprise.DailyContacts))
                {
                    contact = enterprise.DailyContacts;
                    if (!string.IsNullOrEmpty(enterprise.DailyContactsPhone))
                    {
                        contactPhone = enterprise.DailyContactsPhone;
                    }
                    else
                    {
                        contactPhone = enterprise.DailyContactsFixedPhone;
                    }
                }
                else if (!string.IsNullOrEmpty(enterprise.SafetyOrganizationManagerName))
                {
                    contact = enterprise.SafetyOrganizationManagerName;
                    if (!string.IsNullOrEmpty(enterprise.SafetyOrganizationManagerPhone))
                    {
                        contactPhone = enterprise.SafetyOrganizationManagerPhone;
                    }
                    else
                    {
                        contactPhone = enterprise.SafetyOrganizationManagerPhone;
                    }
                }
                else if(!string.IsNullOrEmpty(enterprise.ProductionManagerName))
                {
                    contact = enterprise.ProductionManagerName;
                    if (!string.IsNullOrEmpty(enterprise.ProductionManagerPhone))
                    {
                        contactPhone = enterprise.ProductionManagerFixedPhone;
                    }
                    else
                    {
                        contactPhone = enterprise.DailyContactsFixedPhone;
                    }
                }
                if (!string.IsNullOrEmpty(enterprise.InformationTechnologyPrincipal))
                {
                    contact = enterprise.InformationTechnologyPrincipal;
                    if (!string.IsNullOrEmpty(enterprise.InformationTechnologyPrincipalPhone))
                    {
                        contactPhone = enterprise.InformationTechnologyPrincipalPhone;
                    }
                    else
                    {
                        contactPhone = enterprise.InformationTechnologyPrincipalLandlineTelephone;
                    }
                }
                row.CreateCell(20).SetCellValue(contact);
                row.CreateCell(21).SetCellValue(contactPhone);
                lineNo++;
            }


            //创建流对象并设置存储Excel文件的路径
            using (FileStream url = new FileStream(HttpContext.Current.Server.MapPath("/App_Data/test.xls"), FileMode.OpenOrCreate, FileAccess.ReadWrite))
            {
                //导出Excel文件
                workbook.Write(url);
            };
            return Success(new BaseResponse());
        }