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 ...
原文：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： 包含自定義header字段的跨域請求，瀏覽器會先向服務器發送OPTIONS請求，探測該服務器是否允許自定義的跨域字段。 ...
2018-06-23 16:16 0 8762 推薦指數：
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