Access-Control-Allow-Origin不允许使用origin http：// localhost：1716 [英] Origin http://localhost:1716 is not allowed by Access-Control-Allow-Origin

问题描述

我有这个错误

XMLHttpRequest无法加载 http：// localhost：81 / Test / Service。 SVC / SetJSON 。 Access-Control-Allow-Origin不允许来源 http：// localhost：1716 。

XMLHttpRequest cannot load http://localhost:81/Test/Service.svc/SetJSON. Origin http://localhost:1716 is not allowed by Access-Control-Allow-Origin.

当我使用jquery调用wcf web服务时。

when I calls wcf web service using jquery.

$.ajax({
    type: 'POST',
    url: webmethod,
    data: '{"data":"Darshana"}',
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function (msg) {
        alert(msg.d);
    },
    error: function (e) {
        alert("Unavailable");
    }
});

为什么会这样？

任何帮助。 thanx ..

any help. thanx..

推荐答案

我不记得我是怎么得到这个错误的。但是，由于很多人遇到这个问题，我想发布我所做的事情。

I don't remember how I got this error and when. But, as lots of people having this problem I thought to post what I did.

WCF - IService

WCF - IService

[OperationContract]
[WebGet(BodyStyle = WebMessageBodyStyle.Bare,
    RequestFormat = WebMessageFormat.Json,
    ResponseFormat = WebMessageFormat.Json,
    UriTemplate = "SetJSON?data={data}")]
string SetJSON(string data);

WCF - 服务

[AspNetCompatibilityRequirements(RequirementsMode = 
    AspNetCompatibilityRequirementsMode.Allowed)]
public class Service : IService
{
    public string SetJSON(string data)
    {
        return data;
    }
}

WCF - web.config

WCF - web.config

<system.serviceModel>
  <bindings>
    <webHttpBinding>
      <binding name="webHttpBindingWithJsonP"
             crossDomainScriptAccessEnabled="true" />
    </webHttpBinding>
  </bindings>
....

<services>
  <service name="RnDService.Service">
    <endpoint address="" behaviorConfiguration="webHttpBehavior"
        binding="webHttpBinding"
              bindingConfiguration="webHttpBindingWithJsonP"
        contract="RnDService.IService" />
  </service>
</services>

Jquery call

Jquery call

$.ajax({
    type: "GET",
    url: "http://localhost:81/Test/Service.svc/SetJSON?data=" + "{ \"dl\":" + datalist + " }",
    contentType: "application/json; charset=utf-8",
    dataType: "jsonp",
    success: function (data) {
        alert(data.toString());
    },
    error: function (XMLHttpRequest, textStatus, errorThrown) {
        debugger;
        alert("Error Occured!");
    }
});

不是100％确定是什么解决了我的问题。无论如何，这将有助于某人。 ：）

not 100% sure what solved my problem. Anyway this will help someone. :)

这篇关于Access-Control-Allow-Origin不允许使用origin http：// localhost：1716的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！