use axios to pass parameters. The initial request header is passed in json format without adding format. The backend says that if formdata is needed, add
to axios.axios.defaults.headers = {
"Content-Type": "application/x-www-form-urlencoded"
}function fetch(url, params) {
  return new Promise((resolve, reject) => {
      
    axios.post(url, params)
      .then(response => {
        resolve(response.data);
      })
      .catch((error) => {
        reject(error);
      })
  })
} pass the parameter format as let content = {openid:openid}; then pass content as an argument to the fetch method 
, but the format passed is formdata but still looks like a string (not well understood) 
 
 
 
Sorry for being a little incoherent. Please do me a favor.
