1.设置axios允许跨域携带cookies
axios.defaults.withCredentials=true
2.后端设置
res.header("Access-Control-Allow-Origin",req.headers.origin); //origin不能设置为*!!!!!!!!!!!!!
res.header("Access-Control-Allow-Credentials",true); //带cookies7
axios.defaults.withCredentials=true
res.header("Access-Control-Allow-Origin",req.headers.origin); //origin不能设置为*!!!!!!!!!!!!!
res.header("Access-Control-Allow-Credentials",true); //带cookies7