Autowire failed, more than one bean error exists

Question

I have this error in a spring application (but the application is working and working fine):

Could not autowire. There is more than one bean of 'OAuth2ClientContext' type.
Beans:
oauth2ClientContext   (OAuth2RestOperationsConfiguration.class)  
oauth2ClientContext   (OAuth2RestOperationsConfiguration.class)  
oauth2ClientContext   (OAuth2RestOperationsConfiguration.class)

@SpringBootApplication
@RestController
@EnableOAuth2Client
@EnableAuthorizationServer
@Order(6)
public class SocialApplication extends WebSecurityConfigurerAdapter {

  @Autowired
  OAuth2ClientContext oauth2ClientContext;
}

I really cannot understand where it came from and how to fix it. I am new to this spring stuff, you can specify how to fix it or what I should look for. I do not create / annotate beans.

My pom file

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.security.oauth</groupId>
            <artifactId>spring-security-oauth2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-jwt</artifactId>
            <version>1.0.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>angularjs</artifactId>
            <version>1.4.3</version>
        </dependency>
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>jquery</artifactId>
            <version>2.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>bootstrap</artifactId>
            <version>3.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>webjars-locator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

Answer 1

You probably have more than one bean with the same name OAuth2ClientContext

To fix this, you can add @Qualifier(name='OAuth1')to one of the methods or you can set one of them as @Primary.

Example:

@Autowired
@Qualifier(name = 'service1')
private OAuth2ClientContext oauth;

OR

If you created your own Service, you can do this:

@Service
@Primary
public class OAuth2ClientContext{

...
...
..
}