405方法不允许 - 从jQuery发送对象到REST WCF时

Question

这个问题经常问很多，但是即使我尝试了他们提供的解决方案，我仍然会遇到错误。

我正在以某人对象作为参数发送邮政请求，但我得到：

405-方法不允许错误"

代码：

合同：

 [ServiceContract]
 public interface IPayMentService
 {
      [OperationContract]
      [WebInvoke(Method = "POST",
          UriTemplate = "/AddPerson",
          BodyStyle = WebMessageBodyStyle.Wrapped,
          RequestFormat = WebMessageFormat.Json,
          ResponseFormat = WebMessageFormat.Json)]
      void AddPerson(Person person); 
 }
 [DataContract]
 public class Person
 {
    [DataMember]
    public int Id { get; set; }
    [DataMember]
    public int Age { get; set; }
    [DataMember]
    public String Name { get; set; }
 }

服务：

public class PayMentService : IPayMentService
{
    public void AddPerson(Person person) 
    {
        //..logic
    }
}

客户端：

 $(document).ready(function() {
 var person = {Id: 1, Age : 13, Name: "zag"};
  $.ajax({
        url: 'http://localhost:64858/PayMentService.svc/AddPerson',
        type: 'POST',
        contentType: "application/json",
        data: JSON.stringify(person),
        dataType: 'json'
    })
});

谢谢，

Answer 1

在global.asax文件中尝试使用此代码：

    protected void Application_BeginRequest(object sender, EventArgs e)
    {
        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "http://localhost");
        if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
        {
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "POST, PUT, DELETE");
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
           HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
           HttpContext.Current.Response.End();
        }
    }

Answer 2

如果您的选项请求不返回合适的状态，则该请求也将失败。为了确保期权请求返回200个状态，您最好更改状态代码。您也可以在web.config中添加这些标题。

 <system.webServer>
  <httpProtocol>  
  <customHeaders>  
    <add name="Access-Control-Allow-Origin" value="*" />  
  <add name="Access-Control-Allow-Methods" value="POST,GET,OPTIONS" />
    <add name="Access-Control-Allow-Headers" value="*"/>
        </customHeaders>  
</httpProtocol>
  </system.webServer>
  protected void Application_EndRequest(object sender, EventArgs e)
    {
                 if(HttpContext.Current.Request.HttpMethod == "OPTIONS")
        {
            HttpContext.Current.Response.StatusCode = 200;
        }
    }

如果您不熟悉跨区域请求，则可以参考MDN

https://developer.mozilla.org/en-us/docs/web/http/cors