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IndexOutOfBoundsException in ModelMapper #1562

Closed
@lhanson

Description

@lhanson

Using io.springfox:springfox-swagger2:2.6.0 with the following endpoint mapping:

@RequestMapping("/")
@ResponseBody
List<A> getList() {
    [new A()]
}

class A {
    List<Map> listOfMaps
}

throws an exception and returns HTTP 500:

java.lang.IndexOutOfBoundsException: Index: 1
	at java.util.Collections$EmptyList.get(Collections.java:4454) ~[na:1.8.0_74]
	at springfox.documentation.swagger2.mappers.ModelMapper.typeOfValue(ModelMapper.java:129) ~[springfox-swagger2-2.6.0.jar:2.6.0]
	at springfox.documentation.swagger2.mappers.ModelMapper.mapProperties(ModelMapper.java:92) ~[springfox-swagger2-2.6.0.jar:2.6.0]
	at springfox.documentation.swagger2.mappers.ModelMapper.mapModels(ModelMapper.java:67) ~[springfox-swagger2-2.6.0.jar:2.6.0]
	at springfox.documentation.swagger2.mappers.ModelMapper.modelsFromApiListings(ModelMapper.java:211) ~[springfox-swagger2-2.6.0.jar:2.6.0]
	at springfox.documentation.swagger2.mappers.ServiceModelToSwagger2MapperImpl.mapDocumentation(ServiceModelToSwagger2MapperImpl.java:50) ~[springfox-swagger2-2.6.0.jar:2.6.0]
	at springfox.documentation.swagger2.web.Swagger2Controller.getDocumentation(Swagger2Controller.java:82) ~[springfox-swagger2-2.6.0.jar:2.6.0]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_74]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_74]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_74]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_74]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
...

Here's a minimal sample project which reproduces the problem.

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