1. The error in the front-end browser is as follows:

Access to XMLHttpRequest at http://xxx.xxx from origin "http://localhost:8000" has been blocked by CORS policy: Response to preflight request doesn"t pass access control check: Redirect is not allowed for a preflight request.

2.axios encapsulation

Encapsulation Code

1. modified on the basis of encapsulation

// axios
const service = axios.create({
  baseURL: process.env.BASE_API, // api  base_url
  timeout: 5000, // 
  headers: { "Content-Type": "multipart/form-data" }
})
//headersoptions

if (config.method === "post") {
      config.data = qs.stringify({
        ...config.data
      })
    }
    // 

but after modification, an options will still be sent for the first time, and the request for options is 302