Fix issue8132

[anand188]

PR checklist

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• Ran the shell script under ./bin/ to update Petstore sample so that CIs can verify the change. (For instance, only need to run ./bin/{LANG}-petstore.sh and ./bin/security/{LANG}-petstore.sh if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in .\bin\windows\.
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Description of the PR

OpenApi code generator failed create when custom templates are included

java -jar swagger-codegen-cli.jar generate -i authorization.yaml -l jaxrs-jersey -c config.json -o C:/user/openapijersey -t C:\user\template

Custom template in openapi 3 doesnt work always throws java.io.FileNotFoundException: /C:\user\template/C:\user\template\model.mustache #8132

[anand188]

@HugoMario Please review the pullrequest

[HugoMario]

hey @anand188
I just tested PR with this command:

java -jar target\swagger-codegen-cli.jar generate -l java -i http://petstore.swagger.io/v2/swagger.json -o C:\Tempo\output -t C:\Tempo\templates\java

and it's getting this error:

Caused by: java.io.FileNotFoundException: C:\Tempo\templates\java/HttpBasicAuth.mustache
        at com.github.jknack.handlebars.io.URLTemplateLoader.sourceAt(URLTemplateLoader.java:70)
        at com.github.jknack.handlebars.Handlebars.compile(Handlebars.java:357)
        at com.github.jknack.handlebars.Handlebars.compile(Handlebars.java:343)
        at io.swagger.codegen.DefaultGenerator.getHandlebars(DefaultGenerator.java:1029)
        at io.swagger.codegen.DefaultGenerator.generateSupportingFiles(DefaultGenerator.java:581)

This HttpBasicAuth.mustache is located in a subfolder inside the templates localtion.

[anand188]

@HugoMario tested in which OS?

[anand188]

@HugoMario thats a bit tricky because auth its different folder in template i think you need to put all mustache in the local folder C:\Tempo\templates\java

[anand188]

@HugoMario only one template file which is given in local should be taken and remaining it should take from its classpath but thats no the case in code

[HugoMario]

hey @anand188 , sorry for delay response. It was tested on Windows, i don't think it's a good idea putting all templates on same folder. The sample used is taken from one of the templates used in codegen project.