Exception while generating java code (swagger 3.0.0-rc1)

[kroegerama]

I'm getting the following error when I try to generate a java client with v3.0.0-rc1:

Exception in thread "Thread-1" java.lang.RuntimeException: Could not generate model 'body'
        at io.swagger.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:409)
        at io.swagger.codegen.DefaultGenerator.generate(DefaultGenerator.java:728)
        at io.swagger.codegen.cmd.Generate.run(Generate.java:331)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.util.regex.PatternSyntaxException: Illegal/unsupported escape sequence near index 3
v2\Java
   ^
        at java.util.regex.Pattern.error(Unknown Source)
        at java.util.regex.Pattern.escape(Unknown Source)
        at java.util.regex.Pattern.atom(Unknown Source)
        at java.util.regex.Pattern.sequence(Unknown Source)
        at java.util.regex.Pattern.expr(Unknown Source)
        at java.util.regex.Pattern.compile(Unknown Source)
        at java.util.regex.Pattern.<init>(Unknown Source)
        at java.util.regex.Pattern.compile(Unknown Source)
        at java.lang.String.replaceFirst(Unknown Source)
        at io.swagger.codegen.DefaultGenerator.getHandlebars(DefaultGenerator.java:1014)
        at io.swagger.codegen.DefaultGenerator.processTemplateToFile(DefaultGenerator.java:744)
        at io.swagger.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:396)
        ... 3 more

My file works fine with swagger 2

[HugoMario]

hey @kroegerama this was already fixed for 3.0.0-SNAPSHOT, can you try and let us know if the issue is still present?

[kroegerama]

Hi @HugoMario after updating to version swagger-codegen-cli-3.0.0-20180608.091024-78.jar, I get the following error:

Exception in thread "Thread-1" java.lang.RuntimeException: Could not generate model 'body'
        at io.swagger.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:409)
        at io.swagger.codegen.DefaultGenerator.generate(DefaultGenerator.java:729)
        at io.swagger.codegen.cmd.Generate.run(Generate.java:331)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.io.FileNotFoundException: /v2\Java/model.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:1027)
        at io.swagger.codegen.DefaultGenerator.processTemplateToFile(DefaultGenerator.java:745)
        at io.swagger.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:396)
        ... 3 more

[HugoMario]

@kroegerama
can you please share your definition?

[kroegerama]

Sorry, I am not allowed to share the exact definition.

But the following definition:

swagger: '2.0'
info:
  version: 1.0.1
host: example.com
basePath: /api/v1
schemes:
  - https
securityDefinitions:
  Token:
    type: apiKey
    in: query
    name: token
paths:
  '/products/home':
    get:
      operationId: getProducts
      tags:
        - Product
      parameters:
        - name: page
          in: query
          required: true
          type: integer
        - name: itemCount
          in: query
          required: true
          type: integer
      responses:
        '200':
          schema:
            type: array
            items:
              $ref: '#/definitions/Product'
definitions:
  Product:
    type: object
    title: Product
    properties:
      id:
        type: string
      title:
        type: string
      simmilar:
        type: array
        items:
          $ref: '#/definitions/Product'

Generates an exception as well:

Exception in thread "Thread-1" java.lang.RuntimeException: Could not generate model 'Product'
        at io.swagger.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:409)
        at io.swagger.codegen.DefaultGenerator.generate(DefaultGenerator.java:729)
        at io.swagger.codegen.cmd.Generate.run(Generate.java:331)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.io.FileNotFoundException: /v2\Java/model.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:1027)
        at io.swagger.codegen.DefaultGenerator.processTemplateToFile(DefaultGenerator.java:745)
        at io.swagger.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:396)
        ... 3 more

[HugoMario]

Hey @kroegerama can you please try with this new version: swagger-codegen-cli-2.4.0-20180613.124022-270.jar

I've testing on windows with this and works pretty fine.

[kroegerama]

@HugoMario your new version is 2.4.0, but my bug report was about 3.0.0

[HugoMario]

omg, sorry, my bad. @kroegerama please try with this one swagger-codegen-cli-3.0.0-20180615.112032-79.jar and let me know how it works for you.

[kroegerama]

@HugoMario Seems not to be fixed for me. I'm still getting the same error.

[HugoMario]

PR . #8327 should solve this issue, @kroegerama can you please check this when you have a chance?

You can use this version: swagger-codegen-cli-3.0.0-20180616.164244-81.jar

[kroegerama]

Thanks a lot! Seems to be fixed. @HugoMario

[PetervLeeuwen]

I have added a fix for this issue in another GitHub issue which is about the same topic.
#8273