我把nginx设置为代理，django设置为后端，react设置为前端

server {
    listen 80;
    server_name example.com;
    root /usr/share/nginx/html/build/;
    index index.html index.htm;
    location / {
        proxy_pass http://localhost:8000/;
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Credentials "true";
        add_header Access-Control-Allow-Headers '*';
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_redirect off;
    }
}

字符串
当向后端发送登录请求时，如果数据成功，则工作正常，但是当输入错误的凭据时，即使响应在后端日志中，它也会显示cors错误，并且它会说它返回了响应
axios代码：

const axiosPostRequest = ({url, useToken=true, data}) => {
  if (url && !url.startsWith('http')){
    url = HOST.toString() + url
  }
  let options = {
  }
  if (useToken) {
      options['headers'] = {}
      options['headers']['Authorization'] = `${AUTH_HEADER} ${getAuthToken()}`
  }
  
  return axios.post(url, data, options)
}

型
选项响应标头：

HTTP/1.1 200 OK
Server: nginx/1.24.0 (Ubuntu)
Date: Tue, 02 Jan 2024 17:33:19 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 0
Connection: keep-alive
Vary: origin
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: accept, authorization, content-type, user-agent, x-csrftoken, x-requested-with
Access-Control-Allow-Methods: DELETE, GET, OPTIONS, PATCH, POST, PUT
Access-Control-Max-Age: 86400
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: *

型
重复的头文件可能是由于安装了django cors头文件