Parse error generating server stub with openapitools/openapi-generator-cli using OAS 3.0

Question

I am trying to generate server code using openapitools/openapi-generator-cli which I installed globally using NPM.

When I run the command: openapi-generator generate -i MyApi.yaml -g aspnetcore -o ./src

I get the following error:

[main] ERROR i.s.parser.SwaggerCompatConverter - failed to read resource listing
com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'openapi': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false')

I have also tried converting my spec file to json and encountered the same error.

How can I resolve this error with parsing the yaml file?

Gilighost · Accepted Answer · 2020-06-08 21:22:42Z

1

I ran my spec file through the online editor at http://editor.swagger.io/ and found an error in my yaml (I forgot to add a parameter entry for a path with a parameter in the path). Once I fixed the error, the generator worked correctly.

So this was user error, though the error message could be better.

answered Jun 8, 2020 at 21:22

Gilighost

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