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How to access a zipfile from a URL which contains a GML file?

  • October 5, 2020
  • 5 replies
  • 72 views
lambertus
Enthusiast
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I want to download a zipfile using an URL and continue with the GML file which is within this zipfile.

 

The following URL contains the zipfile:

http://geodata.nationaalgeoregister.nl/top100nl/extract/kaartbladen/TOP100NL_33W.zip?formaat=gml

 

I tried to use the HTTP caller first with these settings:

HTTP method: GET

Save Response Body to: Attribute

 

..then I used the FeatureReader to open the output of the HTTP caller.

However, I got stuck. The HTTP caller did not generate any output.

 

Could you advise me in this?

 

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5 replies

david_r
Celebrity
  • david_rCelebrity
  • 8392 replies
  • October 5, 2020

You can simply point the reader directly to the URL that returns the zipped GML, for example:

2020-10-05 11_24_13-Add Reader

Result:

2020-10-05 11_24_13-Add Reader 2

ebygomm
Influencer
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  • ebygommInfluencer
  • Influencer
  • 3427 replies
  • October 5, 2020

You need to set Save Response Body to: File

You should then get a feature exiting the HttpCaller with an attribute of _response_file_path which you can use as the dataset in the FeatureReader

lambertus
Enthusiast
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  • lambertusEnthusiast
  • Author
  • Enthusiast
  • 141 replies
  • October 5, 2020

You can simply point the reader directly to the URL that returns the zipped GML, for example:

2020-10-05 11_24_13-Add Reader

Result:

2020-10-05 11_24_13-Add Reader 2

Thanks for your reply!

I added a GML reader like you did but got some errors like shown in this image:

Just ignore the other transformers, that was another trial :)

Errors fme GML Reader

david_r
Celebrity
  • david_rCelebrity
  • 8392 replies
  • October 5, 2020

Thanks for your reply!

I added a GML reader like you did but got some errors like shown in this image:

Just ignore the other transformers, that was another trial :)

Errors fme GML Reader

I can confirm that I get the same error with FME 2019. But with FME 2020.1 it works just fine and I was able to read the entire dataset. You may want to consider upgrading, you can keep both versions as long as you install them to separate directories.

https://www.safe.com/support/downloads/

lambertus
Enthusiast
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  • lambertusEnthusiast
  • Author
  • Enthusiast
  • 141 replies
  • October 5, 2020

You need to set Save Response Body to: File

You should then get a feature exiting the HttpCaller with an attribute of _response_file_path which you can use as the dataset in the FeatureReader

Thanks a lot! Works perfect. Small remark, I added a Creator before the HTTP caller.

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