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WEB API錯誤404-“消息”:“請求的資源不支持http方法'PUT'。”

[英]WEB API error-404 - “Message”: “The requested resource does not support http method 'PUT'.”

HTTP/1.1 405 Method Not Allowed
Cache-Control: no-cache
Pragma: no-cache
Allow: GET,POST
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/8.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?QzpcUHJvamVjdHNcZG90TmV0XFdlYkFQSVxBZFNlcnZpY2VcQWRTZXJ2aWNlXGFwaVxpbXByZXNzaW9uXDE1?=
X-Powered-By: ASP.NET
Date: Tue, 06 May 2014 14:10:35 GMT
Content-Length: 72

{"message":"The requested resource does not support http method 'PUT'."}

我想使用POSTMAN生成PUT和DELETE請求,但是我收到了POSTMAN的以下消息。

甚至我都實現了ASP.NET網站給出的所有建議。

以下是Web API c#代碼:

 // PUT: api/Students/5
    [HttpPut]
    [ResponseType(typeof(void))]
    public IHttpActionResult PutStudent(decimal Enrollment_no, Student student)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        if (Enrollment_no != student.Enrollment_no)
        {
            return BadRequest();
        }

        db.Entry(student).State = EntityState.Modified;

        try
        {
            db.SaveChanges();
        }
        catch (DbUpdateConcurrencyException)
        {
            if (!StudentExists(Enrollment_no))
            {
                return NotFound();
            }
            else
            {
                throw;
            }
        }

        return StatusCode(HttpStatusCode.NoContent);
    }

沒有任何反應,因為嘗試對Web API項目發出“ PUT”命令時仍收到405響應。

您的后端api僅允許GET和POST請求(請參閱響應標頭Allow),因此要生成PUT / DELETE請求API,應添加對它的支持。

您可以通過修改ASP.NET Web API的web.config進行配置。 嘗試找到以下行:
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />

替換為:
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />

請參閱此處以獲取更多信息。

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