前端訪問Flask的接口，瀏覽器報錯：has been blocked by CORS policy: No 'Access-Control-Allow-Origin' heade
需要將Flask的api接口允許跨域訪問，返回的response中，設置headers['Access-Control_Allow_Origin']="*"
樣例如下：
response = make_response(jsonify(data))
response.headers['Access-Control-Allow-Origin'] = '*'
# return jsonify(data)
return response