HERE-API 获取序列优化不 return

Question

我正在尝试使用此处-api 和 findsequence.json-API 优化某些 waypoints 的序列。

我的代码如下所示：

#! /usr/bin/python
# coding: utf8

from requests import Request, Session
import requests


class HereConector:
    app_id = "get_your_own_app_ip"
    app_code = "get_your_own_app_code"

    sequence_url = "https://wse.cit.api.here.com/2/findsequence.json"

    container_locations = [(u'Hamburg', [53.551086, 9.993682]), (u'Munich', [48.13715, 11.576124]), (u'Berlin', [52.520008, 13.404954]), (u'D', [51.514244, 7.468429])]

    def __init__(self):
        pass

    # small proof that the process can work
    def get_demo_route(self):
        url = "https://route.api.here.com/routing/7.2/calculateroute.json"
        # app_data = {"app_id": self.app_id, "app_code": self.app_code}
        app_data = {"waypoint0": "52.5,13.4", "waypoint1":"52.5,13.45", "mode": "fastest;car;traffic:disabled"}
        app_data['app_id'] = self.app_id
        app_data['app_code'] = self.app_code
        print (requests.get(url, app_data).json())


    def loc_to_waypoint(self, location):
        return str(location[1][0]) + ',' + str(location[1][1])

    def find_sequence(self):
        app_data = {"app_id": self.app_id, "app_code": self.app_code}
        app_data['start'] = self.loc_to_waypoint(self.container_locations[0])
        for i, cl in enumerate(self.container_locations):
            if i == 0:
                continue
            app_data['destination' + str(i)] = self.loc_to_waypoint(cl)
            if i == 10:
                break

        app_data['end'] = self.loc_to_waypoint(self.container_locations[-1])
        app_data['mode'] = 'truck;fastest'

        s = Session()
        req = Request('GET', url=self.sequence_url, params=app_data).prepare()

        # This URL can be copy/pasted into a browser and returns an optimized sequence
        print (req.url)

        # this call blocks
        r = s.send(req)

        # this call also blocks
        # r = requests.get(self.sequence_url, app_data)

        print (r.json())



if __name__ == "__main__":
    hc = HereConector()
    hc.get_demo_route()
    hc.find_sequence()

如果我将生成的 URL 复制到我的浏览器中，我会立即获得优化的路线（处理时间 < 200 毫秒），因此 url 和参数应该是正确的。但是，对 s.send（或 requests.get（self.map_view_url，app_data））的调用会阻塞。（其他调用例如让地图与请求完美配合）。

这也是我对请求库的第一次实验，所以我不知道如何进一步调试。

更新：代码显示 python2.7 和 python3

的相同行为

Answer 1

我们尝试执行您的上述代码并使用 s.send 和 requests.get 调用查看以下响应。所以问题似乎与代码无关。您能否检查您的凭据以及您可以使用它提出的相应请求数量。可能是您超出了配额，因此请求被阻止。尝试使用不同的应用程序 ID 和代码。

{'results': [{'waypoints': [{'id': 'start', 'lat': 53.551086, 'lng': 9.993682, 'sequence': 0, 'estimatedArrival': None, 'estimatedDeparture': None, 'fulfilledConstraints': []}, {'id': 'destination2', 'lat': 52.520008, 'lng': 13.404954, 'sequence': 1, 'estimatedArrival': None, 'estimatedDeparture': None, 'fulfilledConstraints': []}, {'id': 'destination1', 'lat': 48.13715, 'lng': 11.576124, 'sequence': 2, 'estimatedArrival': None, 'estimatedDeparture': None, 'fulfilledConstraints': []}, {'id': 'destination3', 'lat': 51.514244, 'lng': 7.468429, 'sequence': 3, 'estimatedArrival': None, 'estimatedDeparture': None, 'fulfilledConstraints': []}, {'id': 'end', 'lat': 51.514244, 'lng': 7.468429, 'sequence': 4, 'estimatedArrival': None, 'estimatedDeparture': None, 'fulfilledConstraints': []}], 'distance': '1484517', 'time': '68916', 'interconnections': [{'fromWaypoint': 'start', 'toWaypoint': 'destination2', 'distance': 289082.0, 'time': 13845.0, 'rest': 0.0, 'waiting': 0.0}, {'fromWaypoint': 'destination2', 'toWaypoint': 'destination1', 'distance': 591003.0, 'time': 27227.0, 'rest': 0.0, 'waiting': 0.0}, {'fromWaypoint': 'destination1', 'toWaypoint': 'destination3', 'distance': 604430.0, 'time': 27844.0, 'rest': 0.0, 'waiting': 0.0}, {'fromWaypoint': 'destination3', 'toWaypoint': 'end', 'distance': 2.0, 'time': 0.0, 'rest': 0.0, 'waiting': 0.0}], 'description': 'Targeted best time; without traffic', 'timeBreakdown': {'driving': 68916, 'service': 0, 'rest': 0, 'waiting': 0}}], 'errors': [], 'processingTimeDesc': '940ms', 'responseCode': '200', 'warnings': None, 'requestId': None}

HERE-API 获取序列优化不 return

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