has been blocked by CORS policy: Request header field authorization is not allowed by Access-Control-Allow-Headers in preflight response.
https://www.cnblogs.com/caimuqing/p/6733405.html ...
原文：axios -- has been blocked by CORS policy: Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response.
項目中，如果遇到axios跨域請求，這種錯誤： Access to XMLHttpRequest at http: x.x.x: api add from origin http: localhost: has been blocked by CORS policy: Request header field content type is not allowed by Access Contro ...
2020-03-22 13:58 0 3773 推薦指數：
相關推薦
axios跨域請求報錯：Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response.
在做項目時，用到axios，數據用post提交時，老是報錯，錯誤提示為： 如下圖： 仔細看看自己跨域配置，設置成這樣： 這是因為我在后端設置跨域請求的時候沒有所需的請求類型。於是做了如下修改： 結果就可以啦。 ...
9.如何解決出現AXIOS的Request header field Content-Type is not allowed by Access-Control-Allow-Headers in preflight response.
問題描述： 由於restful接口需要在頭部header傳遞兩個字段： Content-Type: application/jsonAccess-Token: 84c6635800b14e0eba4f7ece65e095a1 但是，在vue.js里面配置： 執行發送的時候出現 ...
Request header field Content-Type is not allowed by Access-Control-Allow-Headers
今天遇到一個跨域問題記錄學習下： 一、問題： 跨域請求中包含自定義header字段時，瀏覽器console報錯。 Request header field xfilesize is not allowed by Access-Control-Allow-Headers 二、原因： 包含 ...
node——Request header field Authorization is not allowed by Access-Control-Allow-Headers in preflight response
我在請求頭中添加了Authorization，結果出錯，有跨越問題。 解決方法： 在這里res.header("Access-Control-Allow-Headers", allowHeaders);可以寫想要使用的頭 ...
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 ...
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www.1.com的網站里就可以訪問www.baidu.com的內容的這樣就使www.1.com ...