【文章推薦】Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8000' is therefore not allowed a

原文：Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8000' is therefore not allowed a

，，webservice服務中，webConfig中添加以上配置，缺一不可 ...

2018-08-02 15:20 0 5790 推薦指數：

has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present

前端顯示: has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header ...

跨域請求錯誤： Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource

今天在學習Angular 的HttpInterceptor 攔截器時，發現添加了新的headers鍵值之后總是報跨域錯誤。后台使用的是asp.net core。檢查發現，在添加了新的header之后，每次請求之前都會先發送一個options請求，這個請求被后台拒絕了，所以導致報錯。我的后台 ...

has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present

出現這個，就是跨域問題了，我是在vue用axios直接發送請求向java后台的過程中出現的至於什么是跨域問題？主要是有瀏覽器的同源策略導致的，目的就是為了保護網站使用者，若沒有同源策略，那么在 ...

接口在dev環境報跨域問題(has been blocked by CORS policy:Response to preflight request doesn't pass access control check:No 'Access-Control-Allow-Origin' header

前端報錯：跨域問題，解決辦法：（主要是后端解決）在對應的接口處，設置允許跨域即可參考鏈接：https://www.cnblogs.com/Cou ...

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 ...

No 'Access-Control-Allow-Origin' header is present on the requested resource.

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No 'Access-Control-Allow-Origin' header is present on the requested resource.

今天做一個AJAX案例時，瀏覽器監控到如下錯誤： XMLHttpRequest cannot load http://54.169.69.60:8081/process_message. No 'Access-Control-Allow-Origin' header is present ...

nginx 實現 ajax 跨域請求Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin

AJAX從一個域請求另一個域會有跨域的問題。那么如何在nginx上實現ajax跨域請求呢？要在nginx上啟用跨域請求，需要添加add_header Access-Control*指令。如下所示：　　　　　　add_header ...

原文：Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8000' is therefore not allowed a

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