Error enabling OAuth2 - spring

Question

I am new to Spring Boot and trying to work with some of the example apps from Josh Long and Dave Syer.
I have the following code :
#SpringBootApplication
#EnableOAuth2Resource
#RestController
public class SsoResourceApplication {
#RequestMapping("/hi")
public Map<String, Object> hi(Principal principal) {
System.out.println("received request from " + principal.getName());
Map<String, Object> result = new HashMap<>();
result.put("id", UUID.randomUUID().toString());
result.put("content", "Hello, world!");
return result;
}
With the dependencies defined so
compile('org.springframework.security.oauth:spring-security-oauth2:2.0.8.RELEASE.jar')
compile('org.springframework.cloud:spring-cloud-starter-security:1.0.4.RELEASE')
When I start up I get the following error
Caused by: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfiguration':
Injection of autowired dependencies failed
Thanks in advance

Answer 1

It looks like you omitted the property spring.oauth2.resource.userInfoUri in your application.properties (or application.yml). This property must point to a URI within your authorization server. Here is a Spring boot 1.2 to 1.3 migration document.
I assume you have an authorization server in your environment, so that the user Info URI can point to.
You also migh want to have a look at the Spring boot OAuth2 tutorial.
Finally, you would see that most recent examples use #EnableResourceServer rather than #EnableOAuth2Resource. They are equivalent, but the former does not require a dependency on spring cloud and the configuration property is slightly different (security.oauth2.resource.userInfoUri). It's all explained in the Spring boot 1.2 to 1.3 migration document.