跨域失败 The 'Access-Control-Allow-Origin' header contains multiple values - 码上快乐

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跨域失败 The 'Access-Control-Allow-Origin' header contains multiple values

本文转载自查看原文 2021-12-22 14:37 2987

Access to XMLHttpRequest at 'xxx' from origin 'xxx' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values '*, *', but only one is allowed.

背景: 我的后端使用了 Django + corsheaders 允许跨域, 而昨天同事在配置 Nginx 时, 将整个 server 块都添加了跨域支持, 也就是在同一个响应报文里, Access-Control-Allow-Origin 头被设置了两次(corsheaders 设置一次, 在nginx中又被设置了一次), 也就成为了多值(本应该是'*', 实际返回的是'*, *'), 导致浏览器禁止跨域.

解决方案就是把 Nginx 中的 add_header Access-Control-Allow-Origin *;指令, 应用在同事的 location 块而非整个 server 块, 恢复正常.

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