ajax跨域请求Flask后台

ajax中使用jsonp方式实现跨域

headers: {'Cookie' : document.cookie }  #携带cookie

 xhrFields: {
            withCredentials: true
        },                         # 将请求站的cookie一起发送过去

$.ajax(
    {
        headers: {'Cookie' : document.cookie },
        type: 'get',
        url: 'http://b.com:5000/login?domain=' + domain +
        '&username=' + username,
        dateType: 'jsonp',
        jsonp: "callback",
        xhrFields: {
            withCredentials: true
        },
        success: function (data) {
            window.location.href = "http://" + data.domain
        }

    }
)

Flask视图的设置

@app.route('/login')
def login():

    domain = request.args.get("domain")
    username = request.args.get('username')
    content = {
        "domain": domain,
        "msg": 'success',
    }

    resp = make_response(jsonify(content))

    # 下面这两句允许跨域
    resp.headers["Access-Control-Allow-Origin"] = request.headers.get("Origin")
    resp.headers["Access-Control-Allow-Credentials"] = 'true'

    resp.set_cookie("username", username)
    return resp