致电WebService-没有访问控制允许来源 [英] Call WebService - no Access-Control-Allow-Origin

问题描述

在IIS上，我已部署了自定义Web服务，该服务调用数据库服务器并以XML返回数据并在下拉列表中填充数据.
从IIS workfine检查webserice.

但是当我使用AJAX HTTP请求从SharePoint页面调用网络服务时，出现以下错误.

在AJAX请求中，我已经添加了以下内容:
类型:"POST"，contentType:"text/xml"，dataType:"xml"，crossDomain:true，xhrFields:{withCredentials:true，}，标头:{"Access-Control-Allow-Credentials":" ; true"}，


无法加载https://myportal.mydomain.com/servicecor/cor.asmx?op=Get_KPI_Code: 
所请求的资源上没有"Access-Control-Allow-Origin"标头.因此，不允许访问来源"https://myportal.mydomain.com".
响应的HTTP状态码为500.

请指导可能存在的问题以及解决方法.
谢谢

---

iffi

Hi,

On IIS i have deployed custom webservice which call database server and return data in XML and populate data in dropdown.
Check webserice from IIS workfine.

but when i call webservice from SharePoint page using AJAX HTTP request getting following error. 

in AJAX request i have already added following:
type:'POST',contentType:"text/xml",dataType:"xml",crossDomain:true,xhrFields:{withCredentials:true,},headers:{"Access-Control-Allow-Credentials":"true"},


Failed to load https://myportal.mydomain.com/servicecor/cor.asmx?op=Get_KPI_Code: 
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://myportal.mydomain.com' is therefore not allowed access. 
The response had HTTP status code 500.

pls guide what could be an issue and how to fix it.
Thx

---

iffi

推荐答案

嗨

您的Web服务是否处理  "Access-Control-Allow-Origin"标头?

does your web service handle the 'Access-Control-Allow-Origin' header?

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