POST request to display route on graphhopper-maps

Directions API
1
  • I have a local instance of graphhopper running on port 8989
  • I have a local instance of graphhopper-maps running on port 3000

I would like to send a post request to graphopper-maps on port 3000 with a route, to then be displayed on the port 3000 map.

I would ideally use the URL (http://localhost:3000/?point=[lat],[lon] etc.), however I have quickly run into a URL limit issue meaning that this is not a viable option for my application.

It seems the only way forward is to handle post requests from the graphhopper-maps repo, however I am hoping there is a simpler solution out there. Any help is greatly appreciated. Thank you.

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Iā€™m not sure I fully understand your question, but if you are running graphhopper-maps from source you can edit the routingApi field of config.js so it points to your GraphHopper server running on port 8989.

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Thanks for the quick reply - I will try to clarify on my message above.

I have pointed my graphhopper-maps server (port 3000) to the graphhopper instance (port 8989) using config.js. What I would like to do is make a post request from an external application (via the terminal) to send data as a post request to then be displayed on my graphhopper maps instance on port 3000.

Hope that helps to clarify my issue.

4

You could use our API explorer (see it live here). It allows pasting a complete POST request body. Does this help?

5

RESOLVED
I have come up with a solution to my issue, in case someone else has the same problem as I did.

Quick Summary:
Initially, my problem was that I wanted to display a large number of points onto the map as a route. Using the GET request to graphhopper-maps failed as the URL string was too long. To my understanding, this is a browser limitation, and the best alternative is to use a POST request. The POST request was successful, however it did not update the graphhopper-maps with the requested points, it just returns a json string.

Solution:
I am now using graphopper purely as a backend and no longer using graphopper-maps as a front-end for my application. Instead I am now running leaflet through a locally hosted flask server. This allowed me to create a custom POST request handler which receives a JSON formatted string as input, and then displays the points on the leaflet map using the leaflet polyline function.

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