我有一个Web Api控制器.它表现得很奇怪.当我使用PostMan时,我可以在Web Api上访问POST方法,但是当我从.net使用HttpWebRequest时,它返回(405)Method Not Allowed.
我把Web Api代码放在这里：
我把Web Api代码放在这里：
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web;
using System.Web.Http;
namespace MyProject.Controllers
{
public class TestController : ApiController
{
[HttpPost]
public int buy(OrderResult value)
{
try
{
if (value.InvoiceDate != null && value.Result == 1)
{
return 0;
}
}
catch{}
return -1;
}
}
public class OrderResult
{
public int Result { get; set; }
public long InvoiceNumber { get; set; }
public string InvoiceDate { get; set; }
public long TimeStamp { get; set; }
}
}
这是我的WebApiConfig.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Http;
namespace MyProject
{
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "DefaultApi",routeTemplate: "api/{controller}/{action}/{id}",defaults: new { action = RouteParameter.Optional,id = RouteParameter.Optional }
);
}
}
}
这是我从另一个.NET项目发送POST请求的方式：
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
namespace MyProject.Controllers
{
public static class WebReq
{
public static string PostRequest(string Url,string postParameters)
{
try
{
HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(Url);
myReq.Method = "POST";
myReq.Timeout = 30000;
myReq.Proxy = null;
byte[] postData = Encoding.UTF8.GetBytes(postParameters);
myReq.ContentLength = postData.Length;
myReq.ContentType = "application/x-www-form-urlencoded";
using (Stream requestWrite = myReq.GetRequestStream())
{
requestWrite.Write(postData,postData.Length);
requestWrite.Close();
using (HttpWebResponse webResponse = (HttpWebResponse)myReq.GetResponse())
{
if (webResponse.StatusCode == HttpStatusCode.OK)
{
using (Stream str = webResponse.GetResponseStream())
{
using (StreamReader sr = new StreamReader(str))
{
return sr.ReadToEnd();
}
}
}
return null;
}
}
}
catch (Exception e)
{
var message = e.Message;
return null;
}
}
}
}
<modules runAllManagedModulesForAllRequests="true"> <remove name="WebDAVModule" /> </modules>
这很奇怪,因为我可以从PostMan成功发送POST请求. PostMan将此代码发送到API.
POST /api/Test/buy HTTP/1.1 Host: domain.com Cache-Control: no-cache Postman-Token: 9220a4e6-e707-5c5f-ea61-55171a5dd95f Content-Type: application/x-www-form-urlencoded InvoiceDate=28012016&Result=1
我将不胜感激任何解决问题的建议.
解决方法
byte[] postData = Encoding.UTF8.GetBytes(postParameters);
myReq.ContentLength = postData.Length;
myReq.ContentType = "application/x-www-form-urlencoded";
using (Stream requestWrite = myReq.GetRequestStream())
{
requestWrite.Write(postData,postData.Length);
您很可能不会发送正确的x-www-form-urlencoded请求.您可能无法正确编码从postParameters传入的数据.见Post form data using HttpWebRequest
由于您未根据x-www-form-urlencoded生成有效的OrderResult对象,因此路由选择器不会选择您的Buy操作.这就是你不允许POST的原因.
如果您更改了OrderResult value = null,则可能会进入控制器,因为它现在是可选参数.然而,这不是你想要的,除非你有一个奇怪的控制器,行为如下：
Buy(OrderResult value = null)
{
if(value== null)
value = MyCustomDeserializeFromRequestBody(RequestContext)
...
}
最后你真的不应该使用这个类,现代开发有更好的结构https://stackoverflow.com/a/31147762/37055 https://github.com/hhariri/EasyHttp我的头顶
