路线回复

https://maps.googleapis.com/maps/api/directions/json
  ?destination=Los%20Angeles%2C%20CA
  &origin=Chicago%2C%20IL
  &waypoints=Joplin%2C%20MO%7COklahoma%20City%2C%20OK
  &key=YOUR_API_KEY

curl -L -X GET 'https://maps.googleapis.com/maps/api/directions/json?origin=Chicago%2C%20IL&destination=Los%20Angeles%2C%20CA&waypoints=Joplin%2C%20MO%7COklahoma%20City%2C%20OK&key=YOUR_API_KEY'

      
{
  "geocoded_waypoints":
    [
      {
        "geocoder_status": "OK",
        "place_id": "ChIJ7cv00DwsDogRAMDACa2m4K8",
        "types": ["locality", "political"],
      },
      {
        "geocoder_status": "OK",
        "place_id": "ChIJ69Pk6jdlyIcRDqM1KDY3Fpg",
        "types": ["locality", "political"],
      },
      {
        "geocoder_status": "OK",
        "place_id": "ChIJgdL4flSKrYcRnTpP0XQSojM",
        "types": ["locality", "political"],
      },
      {
        "geocoder_status": "OK",
        "place_id": "ChIJE9on3F3HwoAR9AhGJW_fL-I",
        "types": ["locality", "political"],
      },
    ],
  "routes":
    [
      {
        "bounds":
          {
            "northeast": { "lat": 41.8781139, "lng": -87.6297872 },
            "southwest": { "lat": 34.0523525, "lng": -118.2435717 },
          },
        "copyrights": "Map data ©2022 Google, INEGI",
        "legs":
          [
            {
              "distance": { "text": "579 mi", "value": 932311 },
              "duration": { "text": "8 hours 48 mins", "value": 31653 },
              "end_address": "Joplin, MO, USA",
              "end_location": { "lat": 37.0842449, "lng": -94.513284 },
              "start_address": "Chicago, IL, USA",
              "start_location": { "lat": 41.8781139, "lng": -87.6297872 },
              "steps":
                [
                  {
                    "distance": { "text": "443 ft", "value": 135 },
                    "duration": { "text": "1 min", "value": 24 },
                    "end_location": { "lat": 41.8769003, "lng": -87.6297353 },
                    "html_instructions": "Head <b>south</b> on <b>S Federal St</b> toward <b>W Van Buren St</b>",
                    "polyline": { "points": "eir~FdezuOdCEjBC" },
                    "start_location": { "lat": 41.8781139, "lng": -87.6297872 },
                    "travel_mode": "DRIVING",
                  },
                  {
                    "distance": { "text": "269 ft", "value": 82 },
                    "duration": { "text": "1 min", "value": 20 },
                    "end_location": { "lat": 41.8768866, "lng": -87.63073 },
                    "html_instructions": "Turn <b>right</b> at the 1st cross street onto <b>W Van Buren St</b>",
                    "maneuver": "turn-right",
                    "polyline": { "points": "sar~FzdzuO@fC?|@" },
                    "start_location": { "lat": 41.8769003, "lng": -87.6297353 },
                    "travel_mode": "DRIVING",
                  },
                  // Additional steps omitted for brevity
                ],
              "traffic_speed_entry": [],
              "via_waypoint": [],
            },
            // Additional legs (Joplin to Oklahoma City, Oklahoma City to Los Angeles) omitted for brevity
          ],
        "overview_polyline":
          {
            "points": "eir~FdezuOxyFzfFl`G|qZvtSzqo@d}EhlLtqIdjFhrTfvEdca@... (truncated for brevity)",
          },
        "summary": "I-55 S and I-44",
        "warnings": [],
        "waypoint_order": [0, 1],
      },
    ],
  "status": "OK",
}
      
      

      
<DirectionsResponse>
 <status>OK</status>
 <route>
  <summary>I-55 S and I-44</summary>
  <leg>
   <step>
    <travel_mode>DRIVING</travel_mode>
    <start_location>
     <lat>41.8781139</lat>
     <lng>-87.6297872</lng>
    </start_location>
    <end_location>
     <lat>41.8769003</lat>
     <lng>-87.6297353</lng>
    </end_location>
    <polyline>
     <points>eir~FdezuOdCEjBC</points>
    </polyline>
    <duration>
     <value>24</value>
     <text>1 min</text>
    </duration>
    <html_instructions>Head &lt;b&gt;south&lt;/b&gt; on &lt;b&gt;S Federal St&lt;/b&gt; toward &lt;b&gt;W Van Buren St&lt;/b&gt;</html_instructions>
    <distance>
     <value>135</value>
     <text>443 ft</text>
    </distance>
   </step>
   <step>
    <travel_mode>DRIVING</travel_mode>
    <start_location>
     <lat>41.8769003</lat>
     <lng>-87.6297353</lng>
    </start_location>
    <end_location>
     <lat>41.8768866</lat>
     <lng>-87.6307300</lng>
    </end_location>
    <polyline>
     <points>sar~FzdzuO@fC?|@</points>
    </polyline>
    <duration>
     <value>20</value>
     <text>1 min</text>
    </duration>
    <html_instructions>Turn &lt;b&gt;right&lt;/b&gt; at the 1st cross street onto &lt;b&gt;W Van Buren St&lt;/b&gt;</html_instructions>
    <distance>
     <value>82</value>
     <text>269 ft</text>
    </distance>
    <maneuver>turn-right</maneuver>
   </step>
   <!-- Additional steps omitted for brevity -->
   <duration>
    <value>31653</value>
    <text>8 hours 48 mins</text>
   </duration>
   <distance>
    <value>932311</value>
    <text>579 mi</text>
   </distance>
   <start_location>
    <lat>41.8781139</lat>
    <lng>-87.6297872</lng>
   </start_location>
   <end_location>
    <lat>37.0842449</lat>
    <lng>-94.5132840</lng>
   </end_location>
   <start_address>Chicago, IL, USA</start_address>
   <end_address>Joplin, MO, USA</end_address>
  </leg>
  <!-- Additional legs (Joplin to Oklahoma City, Oklahoma City to Los Angeles) omitted for brevity -->
  <copyrights>Map data ©2022 Google, INEGI</copyrights>
  <overview_polyline>
   <points>eir~FdezuOxyFzfFl`G|qZvtSzqo@d}EhlLtqIdjFhrTfvEdca@... (truncated for brevity)</points>
  </overview_polyline>
  <waypoint_index>0</waypoint_index>
  <waypoint_index>1</waypoint_index>
  <bounds>
   <southwest>
    <lat>34.0523525</lat>
    <lng>-118.2435717</lng>
   </southwest>
   <northeast>
    <lat>41.8781139</lat>
    <lng>-87.6297872</lng>
   </northeast>
  </bounds>
 </route>
 <geocoded_waypoint>
  <geocoder_status>OK</geocoder_status>
  <type>locality</type>
  <type>political</type>
  <place_id>ChIJ7cv00DwsDogRAMDACa2m4K8</place_id>
 </geocoded_waypoint>
 <geocoded_waypoint>
  <geocoder_status>OK</geocoder_status>
  <type>locality</type>
  <type>political</type>
  <place_id>ChIJ69Pk6jdlyIcRDqM1KDY3Fpg</place_id>
 </geocoded_waypoint>
 <geocoded_waypoint>
  <geocoder_status>OK</geocoder_status>
  <type>locality</type>
  <type>political</type>
  <place_id>ChIJgdL4flSKrYcRnTpP0XQSojM</place_id>
 </geocoded_waypoint>
 <geocoded_waypoint>
  <geocoder_status>OK</geocoder_status>
  <type>locality</type>
  <type>political</type>
  <place_id>ChIJE9on3F3HwoAR9AhGJW_fL-I</place_id>
 </geocoded_waypoint>
</DirectionsResponse>