fetch 调用阿里oss 服务器上传

写代码的时候调用oss上传接口，提示

ERROR :Fetch API cannot load [http://localhost:8077/sonny/l...](http://localhost:8077/sonny/listUser?pageIndex=1&pageSize=10.) The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. Origin '[http://localhost:8080](http://localhost:8080/)' is therefore not allowed access.

仔细一看，定位在了 credentials

  const defaultOptions = {
    credentials: 'include',
  };
  const newOptions = { ...defaultOptions, ...options };
  return fetch(url,newOptions).then()

携带cookie时，后台接口必须在响应头中添加

"Access-Control-Allow-Credentials","true"

但是由于oss上传不需要携带cookie。
所以在调用接口的地方配置一下

request(url,{credentials: 'omit',})