Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin
，，webservice服务中，webConfig中添加以上配置，缺一不可 ...
原文：跨域请求错误： Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource
今天在学习Angular 的HttpInterceptor 拦截器时，发现添加了新的headers键值之后总是报跨域错误。后台使用的是asp.net core。 检查发现，在添加了新的header之后，每次请求之前都会先发送一个options请求，这个请求被后台拒绝了，所以导致报错。我的后台跨域代码只启用了 AllowAnyOrigin 方法，所以拒绝了options请求。 为什么会产生opti ...
2019-07-12 17:39 1 10123 推荐指数：
相关推荐
has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present
前端显示: has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header ...
has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present
出现这个，就是跨域问题了，我是在vue用axios直接发送请求向java后台的过程中出现的 至于什么是跨域问题？ 主要是有浏览器的同源策略导致的，目的就是为了保护网站使用者，若没有同源策略，那么在www.1.com的网站里就可以访问www.baidu.com的内容的这样就使www.1.com ...
nginx 实现 ajax 跨域请求Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin
AJAX从一个域请求另一个域会有跨域的问题。那么如何在nginx上实现ajax跨域请求呢？ 要在nginx上启用跨域请求，需要添加add_header Access-Control*指令。如下所示： add_header ...
接口在dev环境报跨域问题(has been blocked by CORS policy:Response to preflight request doesn't pass access control check:No 'Access-Control-Allow-Origin' header
前端报错： 跨域问题，解决办法：（主要是后端解决） 在对应的接口处，设置允许跨域即可 参考链接：https://www.cnblogs.com/Courage129/p/14005223.html ...
Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' heade
XMLHttpRequest cannot load http://10.164.153.37:8050/WebService/WebService.asmx/wsGetStreetData. Response to preflight request doesn't pass access ...
Vue前台，跨域请求报错“Response to preflight request doesn't pass access control check”
如下： 原来是跨域了。那就先解决这个问题吧 一 、在网上查到一种解决办法，就是设置response的he ...
nginx 解决跨域问题 No: 'Access-Control-Allow-Origin' header is present on the requested resource.
错误信息： 1， 2， Provisional headers are shownAccess-Control-Request-Headers: tokenAccess-Control-Request-Method: POSTOrigin: http://127.0.0.1 ...