https://www.cnblogs.com/landeanfen/p/5501487.html

閱讀目錄

• 一、void無返回值

• 二、IHttpActionResult

• 1、Json(T content)

• 2、Ok()、 Ok(T content)

• 3、NotFound()

• 4、其他

• 5、自定義IHttpActionResult接口的實現(xiàn)

• 三、HttpResponseMessage

• 四、自定義類型

• 五、總結(jié) 

　　 public class ORDER
    {public string ID { get; set; }public string NO { get; set; }public string NAME { get; set; }public string DESC { get; set; }
    }

　　 public class OrderController : ApiController
    {
        [HttpPost]public void SaveOrder(ORDER name)
        { //處理業(yè)務(wù)邏輯
}}

$(function () {
    $.ajax({
        type: 'post',
        url: 'http://localhost:21528/api/Order/SaveOrder',
        data: { ID: "aaa", NAME: "test" },
        success: function (data, status) {
            alert(data);
        }
    });
});

　　　　 public JsonResult GetResult()
        {return Json(new { }, JsonRequestBehavior.AllowGet);
        }

　　　　 [HttpGet]public IHttpActionResult GetOrder()
        {var lstRes = new List<ORDER>(); //實際項目中，通過后臺取到集合賦值給lstRes變量。這里只是測試。lstRes.Add(new ORDER() { ID = "aaaa", NO = "111", NAME = "111", DESC = "1111" });
            lstRes.Add(new ORDER() { ID = "bbbb", NO = "222", NAME = "222", DESC = "2222" });return Json<List<ORDER>>(lstRes);
        }

        protected internal JsonResult<T> Json<T>(T content); 

$(function () {
    $.ajax({
        type: 'get',
        url: 'http://localhost:21528/api/Order/GetOrder',
        data: {},
        success: function (data, status) {
            alert(data);
        }
    });
});

        [HttpGet]public IHttpActionResult GetOrder()
        {          return Json<dynamic>(new { AA = "", BB = "cc" });        }

protected internal virtual OkResult Ok();

        [HttpGet]public IHttpActionResult GetOKResult()
        {return Ok();
        }

        [HttpGet]public IHttpActionResult GetOKResult(string name)
        {return Ok<string>(name);
        }

protected internal virtual NotFoundResult NotFound();

        [HttpGet]public IHttpActionResult GetNotFoundResult(string id)
        {var lstRes = new List<ORDER>();//實際項目中，通過后臺取到集合賦值給lstRes變量。這里只是測試。lstRes.Add(new ORDER() { ID = "aaaa", NO = "111", NAME = "111", DESC = "1111" });
            lstRes.Add(new ORDER() { ID = "bbbb", NO = "222", NAME = "222", DESC = "2222" });var oFind = lstRes.FirstOrDefault(x => x.ID == id) ;if (oFind == null)
            {return NotFound();
            }else{return Json<ORDER>(oFind);
            }
        }

$(function () {
    $.ajax({
        type: 'get',
        url: 'http://localhost:21528/api/Order/GetNotFoundResult',
        data: { id :"cccc" },
        success: function (data, status) {
            alert(data);
        }
    });
});

        [HttpGet]public IHttpActionResult GetContentResult()
        {return Content<string>(HttpStatusCode.OK, "OK");
        }

        [HttpGet]public IHttpActionResult GetBadRequest(ORDER order)
        {if (string.IsNullOrEmpty(order.ID))return BadRequest();return Ok();
        }

        [HttpGet]public IHttpActionResult RedirectResult()
        {return Redirect("http://localhost:21528/api/Order/GetContentResult");
        }

namespace System.Web.Http
{// 摘要: //     Defines a command that asynchronously creates an System.Net.Http.HttpResponseMessage.public interface IHttpActionResult
    {// 摘要: //     Creates an System.Net.Http.HttpResponseMessage asynchronously.//// 參數(shù): //   cancellationToken://     The token to monitor for cancellation requests.//// 返回結(jié)果: //     A task that, when completed, contains the System.Net.Http.HttpResponseMessage.Task<System.Net.Http.HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken);
    }
}

 　　public class PageResult : IHttpActionResult
    {object _value;
        HttpRequestMessage _request;public PageResult(object value, HttpRequestMessage request)
        {
            _value = value;
            _request = request;
        }public Task<HttpResponseMessage> ExecuteAsync(System.Threading.CancellationToken cancellationToken)
        {var response = new HttpResponseMessage()
            {
                Content = new ObjectContent(typeof(object), _value, new JsonMediaTypeFormatter()),
                RequestMessage = _request
            };return Task.FromResult(response);
        }
    }

 　　　　[HttpGet]public IHttpActionResult GetPageRow(int limit, int offset)
        {var lstRes = new List<ORDER>();//實際項目中，通過后臺取到集合賦值給lstRes變量。這里只是測試。lstRes.Add(new ORDER() { ID = "aaaa", NO = "111", NAME = "111", DESC = "1111" });
            lstRes.Add(new ORDER() { ID = "bbbb", NO = "222", NAME = "222", DESC = "2222" });var oData = new { total = lstRes.Count, rows = lstRes.Skip(offset).Take(limit).ToList() };return new PageResult(oData, Request);
        }

$(function () {
    $.ajax({
        type: 'get',
        url: 'http://localhost:21528/api/Order/GetPageRow',
        data: { limit:1,offset:1},
        success: function (data, status) {
            alert(data);
        }
    });
});

　　　　public HttpResponseMessage Export()
        {//取數(shù)據(jù)var lstRes = OrderBLL.Export();//向Excel里面填充數(shù)據(jù)HSSFWorkbook workbook = new HSSFWorkbook();
            CreateAndFillSheet(workbook, lstRes);            //保存到服務(wù)var fileName = "Excel" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls";var strPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"Data\" + fileName);using (FileStream fs = new FileStream(strPath, FileMode.Create))
            {
                workbook.Write(fs);using (MemoryStream ms = new MemoryStream())
                {
                    workbook.Write(ms);
                }
            }//輸出到瀏覽器try{var stream = new FileStream(strPath, FileMode.Open);
                HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
                response.Content = new StreamContent(stream);
                response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
                response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
                {
                    FileName = fileName
                };return response;
            }catch{return new HttpResponseMessage(HttpStatusCode.NoContent);
            }
        }

        [HttpGet]public object GetOther()
        {var lstRes = new List<ORDER>();//實際項目中，通過后臺取到集合賦值給lstRes變量。這里只是測試。lstRes.Add(new ORDER() { ID = "aaaa", NO = "111", NAME = "111", DESC = "1111" });
            lstRes.Add(new ORDER() { ID = "bbbb", NO = "222", NAME = "222", DESC = "2222" });return lstRes;
        }