OPTIONS 405（不允许的方法）网页API 2 [英] OPTIONS 405 (Method Not Allowed) web api 2

问题描述

我已经创建了一个Web API 2，我试图做一个跨域请求，但我得到了以下错误：

I have created a web api 2 and I'm trying to do a cross domain request to it but I'm getting the following error:

的选项 http://www.example.com/api/save 405（不允许的方法） 的

OPTIONS http://www.example.com/api/save 405 (Method Not Allowed)

我有一个看看周围，这个问题很分辨率说，我需要从安装的NuGet CORS并启用它，所以我已经安装了软件包，标志着我与

I have had a look around and most resolutions for this problem are saying that I need to install CORs from NuGet and enable it so I have installed the package and marked my controller with

[EnableCors("*", "*", "*")]

但是，这仍然没有解决这个问题。

But this still hasn't resolved the problem.

我的 ApiController 只有以下保存方法：

[ResponseType(typeof(int))]
public IHttpActionResult Save(Student student)
{
    if (ModelState.IsValid)
    {
        using (StudentHelper helper = new StudentHelper())
        {
            return Ok(helper.SaveStudent(student));
        }
    }
    else
    {
        return BadRequest(ModelState);
    }
}

这是我的js从不同的域：

This is my js from a different domain:

$.ajax({
    type: "POST",
    crossDomain: true,
    data: JSON.stringify(student),
    crossDomain: true,
    url: 'http://www.example.com/api/save',
    contentType: "application/json",
    success: function (result) {
        console.log(result);
    }
});

有没有别的东西，我需要做的启用此？

Is there something else I need to do to enable this?

推荐答案

在结束我已经改变Ajax请求解决了这个。我发现，在选项 preflight只在某些情况下发送 - 其中之一是，如果请求包含内容类型不在以下类型之一：

In the end I have solved this by changing the ajax request. I found out that the OPTIONS preflight is only sent in certain situations - one of them being if the request contains a Content-Type that is not one of the following types:

• 应用程序/ x-WWW的形式urlen codeD


• 的multipart / form-data的


• 文本/纯

所以，在我的Ajax请求删除内容类型，并将其更改为以下内容：

So by removing the content-type in my ajax request and changing it to the following:

$.ajax({
    type: "POST",
    crossDomain: true,
    data: student,
    dataType: 'json',
    url: 'http://www.example.com/api/save',
    success: function (result) {
        console.log(result);
    }
});

我能得到它的工作。

I was able to get it working.

此页面有关于简单的请求和有用的信息如何避免preflight请求

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