webapi到处excel

 1  WebApplication3.Controllers
 2 {
 3     public class SomeModel { public int id { get; set; } }//用于接收传递过来的参数
 4     public class DownLoadController : ApiController
 5     {
 6         // GET: DownLoad
 7         public string Index()
 8         {
 9             return "";
10         }
11 
12         //导出excel功能控制器
13         //[Authorize]
14         [HttpGet]
15         [ActionName("Export")]//控制器名称重新定义，加上可以直接请求Exprot
16         public HttpResponseMessage PostExportData(SomeModel model)
17         {
18             var file = ExcelStream();
19             //string csv = _service.GetData(model);
20             HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
21             result.Content = new StreamContent(file);
22             //a text file is actually an octet-stream (pdf, etc)
23             //result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
24 
25             result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/vnd.ms-excel");
26             //we used attachment to force download
27             result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
28             result.Content.Headers.ContentDisposition.FileName = "file.xls";
29             return result;
30         }
31 
32         //得到excel文件流
33         private System.IO.Stream ExcelStream()
34         {
35             //var list = dc.v_bs_dj_bbcdd1.Where(eps).ToList();
36             HSSFWorkbook hssfworkbook = new HSSFWorkbook();
37 
38             ISheet sheet1 = hssfworkbook.CreateSheet("保税订单");
39 
40 
41             IRow rowHeader = sheet1.CreateRow(0);
42 
43             //生成excel标题
44             rowHeader.CreateCell(0).SetCellValue("汇通单号");
45             rowHeader.CreateCell(1).SetCellValue("单据日期");
46             rowHeader.CreateCell(2).SetCellValue("订单号");
47             rowHeader.CreateCell(3).SetCellValue("收件人");
48             rowHeader.CreateCell(4).SetCellValue("收件人电话");
49             rowHeader.CreateCell(5).SetCellValue("收件人地址");
50             rowHeader.CreateCell(6).SetCellValue("物流公司");
51             rowHeader.CreateCell(7).SetCellValue("运单号");
52             rowHeader.CreateCell(8).SetCellValue("数量");
53             rowHeader.CreateCell(9).SetCellValue("状态");
54 
55             //生成excel内容
56             //for (int i = 0; i < list.Count; i++)
57             //{
58             //    NPOI.SS.UserModel.IRow rowtemp = sheet1.CreateRow(i + 1);
59             //    rowtemp.CreateCell(0).SetCellValue(list[i].bh_user);
60             //    rowtemp.CreateCell(1).SetCellValue(list[i].rq.Value.ToString("yyyy-MM-dd HH:mm:dd"));
61             //    rowtemp.CreateCell(2).SetCellValue(list[i].bh_khdd);
62             //    rowtemp.CreateCell(3).SetCellValue(list[i].re_name);
63             //    rowtemp.CreateCell(4).SetCellValue(list[i].re_tel);
64             //    rowtemp.CreateCell(5).SetCellValue(list[i].re_fulladdress);
65             //    rowtemp.CreateCell(6).SetCellValue(list[i].bm_kdgs);
66             //    rowtemp.CreateCell(7).SetCellValue(list[i].kddh);
67             //    rowtemp.CreateCell(8).SetCellValue((int)list[i].sl_total);
68             //    rowtemp.CreateCell(9).SetCellValue(list[i].mc_state_dd);
69             //}
70 
71             for (int i = 0; i < 10; i++)
72                 sheet1.AutoSizeColumn(i);
73 
74             MemoryStream file = new MemoryStream();
75             hssfworkbook.Write(file);
76             file.Seek(0, SeekOrigin.Begin);
77 
78             return file;
79 
80             //return File(file, "application/vnd.ms-excel", "保税订单.xls");
81         }
82 
83     }
84 }