Generating DART package from Swagger-codegen

Question

EDITED : I am getting new error now : I am using SWAGGER 2.0

Command : java -jar path/swagger-codegen-cli.jar generate -i http://petstore.swagger.io/v2/swagger.json -l dart -i dart -o /Users/path/folder/ToStoreClient

ERROR :

 [main] INFO io.swagger.parser.Swagger20Parser - reading from dart
    [main] INFO io.swagger.parser.Swagger20Parser - reading from dart
    [main] INFO io.swagger.codegen.ignore.CodegenIgnoreProcessor - No .swagger-codegen-ignore file found.
    Exception in thread "main" java.lang.RuntimeException: missing swagger input or config!
        at io.swagger.codegen.DefaultGenerator.generate(DefaultGenerator.java:764)
        at io.swagger.codegen.cmd.Generate.run(Generate.java:299)
        at io.swagger.codegen.SwaggerCodegen.main(SwaggerCodegen.java:35)

I am trying to get DART package from the swagger url. https://github.com/swagger-api/swagger-codegen

I am able to implement all the package and steps done here for PETSTORE API : https://github.com/swagger-api/swagger-codegen/tree/master/samples/client/petstore/dart-jaguar/swagger

But i am not able to create DART package from my swagger url in my MAC I tried installing Homebrew

brew install swagger-codegen
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate -i [PATH FOR SWAGGER] -l dart -i swagger.yaml          -o ./api-client -DbrowserClient=false

Below is the error :

Exception in thread "main" java.lang.RuntimeException: Can't load config class with name dart Available: aspnetcore
csharp
csharp-dotnet2
dynamic-html
html
html2
java
jaxrs-cxf-client
jaxrs-cxf
inflector
jaxrs-cxf-cdi
jaxrs-spec
jaxrs-jersey
jaxrs-di
jaxrs-resteasy-eap
jaxrs-resteasy
spring
nodejs-server
openapi
openapi-yaml
kotlin-client
kotlin-server
php
python
python-flask
scala
scala-akka-http-server
swift3
swift4
typescript-angular

    at io.swagger.codegen.v3.CodegenConfigLoader.forName(CodegenConfigLoader.java:31)
    at io.swagger.codegen.v3.cli.SwaggerCodegen.main(SwaggerCodegen.java:96)
Caused by: java.lang.ClassNotFoundException: dart
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at io.swagger.codegen.v3.CodegenConfigLoader.forName(CodegenConfigLoader.java:29)
    ... 1 more

Answer 1

Since you API definition is OpenAPI 2.0 (swagger: '2.0') you need to use Swagger Codegen version 2.x instead of 3.x. You can download 2.x CLI JAR from here:

https://mvnrepository.com/artifact/io.swagger/swagger-codegen-cli/2.4.12

Or, to install it using Homebrew, use:

brew install swagger-codegen@2

Also, you have some duplicate arguments in your command -l dart -i dart. You only need -l dart. -i is used to specify the API definition file (in your example - Petstore JSON file). The correct command is:

java -jar path/swagger-codegen-cli.jar generate -i http://petstore.swagger.io/v2/swagger.json -l dart -o /Users/path/folder/ToStoreClient