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我使用vue.js構建前端並在http://localhost:8080
上運行它,並使用npm run dev
進行開發。跨域可以直接vue-resource發送POST請求嗎?
我用燒瓶建立後端並在http://localhost:8081
上運行它。
我還設置了跨域裝飾我的路線瓶:
def crossdomain(origin=None, methods=None, headers=None,
max_age=21600, attach_to_all=True,
automatic_options=True):
if methods is not None:
methods = ', '.join(sorted(x.upper() for x in methods))
if headers is not None and not isinstance(headers, basestring):
headers = ', '.join(x.upper() for x in headers)
if not isinstance(origin, basestring):
origin = ', '.join(origin)
if isinstance(max_age, timedelta):
max_age = max_age.total_seconds()
def get_methods():
if methods is not None:
return methods
options_resp = current_app.make_default_options_response()
return options_resp.headers['allow']
def decorator(f):
def wrapped_function(*args, **kwargs):
if automatic_options and request.method == 'OPTIONS':
resp = current_app.make_default_options_response()
else:
resp = make_response(f(*args, **kwargs))
if not attach_to_all and request.method != 'OPTIONS':
return resp
h = resp.headers
h['Access-Control-Allow-Origin'] = origin
h['Access-Control-Allow-Methods'] = get_methods()
h['Access-Control-Max-Age'] = str(max_age)
if headers is not None:
h['Access-Control-Allow-Headers'] = headers
return resp
f.provide_automatic_options = False
return update_wrapper(wrapped_function, f)
return decorator
@app.route("/api", methods=['POST', 'OPTIONS'])
@crossdomain(origin="*")
def test():
return "hello world"
然後,我通過vue-resource
發送POST
請求傳遞給後臺:
this.$http.post("http://localhost:8081/api", "somedata").then({}, {})
沒有出人意料的是,瀏覽器發送一個OPTIONS
請求。
所以我的問題是:
- 現在,服務器端有允許跨域,我可以直接
vue-resource
發送POST
要求? - 如果不是,我必須使用flask_cors的CORS嗎?
- 有沒有什麼辦法可以在
8080
端口上運行前端和後端,防止跨域問題?