Spring-boot: @EnableOAuth2Sso gives error with 2.1.2.BUILD-SNAPSHOT of spring boot

[sagargulabani]

Error -:

2018-12-09 15:13:40.842  INFO 23252 --- [           main] c.e.d.AutoCloudControlApp2Application    : Starting AutoCloudControlApp2Application on DESKTOP-G35UN3L with PID 23252 (C:\Users\Sagar\Documents\workspace-sts-3.9.6.RELEASE\autoCloudControlApp-2\target\classes started by Sagar in C:\Users\Sagar\Documents\workspace-sts-3.9.6.RELEASE\autoCloudControlApp-2)
2018-12-09 15:13:40.844  INFO 23252 --- [           main] c.e.d.AutoCloudControlApp2Application    : No active profile set, falling back to default profiles: default
2018-12-09 15:13:41.105  WARN 23252 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name 'scopedTarget.oauth2ClientContext' defined in class path resource [org/springframework/boot/autoconfigure/security/oauth2/client/OAuth2RestOperationsConfiguration$SessionScopedConfiguration$ClientContextConfiguration.class]: Cannot register bean definition [Root bean: class [null]; scope=session; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=false; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2RestOperationsConfiguration$SessionScopedConfiguration$ClientContextConfiguration; factoryMethodName=oauth2ClientContext; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/security/oauth2/client/OAuth2RestOperationsConfiguration$SessionScopedConfiguration$ClientContextConfiguration.class]] for bean 'scopedTarget.oauth2ClientContext': There is already [Root bean: class [null]; scope=session; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=false; primary=false; factoryBeanName=org.springframework.security.oauth2.config.annotation.web.configuration.OAuth2ClientConfiguration$OAuth2ClientContextConfiguration; factoryMethodName=oauth2ClientContext; initMethodName=null; destroyMethodName=(inferred); defined in org.springframework.security.oauth2.config.annotation.web.configuration.OAuth2ClientConfiguration$OAuth2ClientContextConfiguration] bound.
2018-12-09 15:13:41.112  INFO 23252 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-12-09 15:13:41.113 ERROR 23252 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The bean 'scopedTarget.oauth2ClientContext', defined in class path resource [org/springframework/boot/autoconfigure/security/oauth2/client/OAuth2RestOperationsConfiguration$SessionScopedConfiguration$ClientContextConfiguration.class], could not be registered. A bean with that name has already been defined in org.springframework.security.oauth2.config.annotation.web.configuration.OAuth2ClientConfiguration$OAuth2ClientContextConfiguration and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

pom.xml contains the following

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.BUILD-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.autocloudcontrol</groupId>
    <artifactId>autoCloudControlApp-2</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>autoCloudControlApp-2</name>
    <description>Cloud Automator</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <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.boot</groupId>
            <artifactId>spring-security-oauth2-autoconfigure</artifactId>
            <version>2.0.0.RELEASE</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-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

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

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>


</project>

Main Class

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.security.oauth2.client.EnableOAuth2Sso;

@SpringBootApplication
@EnableOAuth2Sso
public class AutoCloudControlApp1Application {

    public static void main(String[] args) {
        SpringApplication.run(AutoCloudControlApp1Application.class, args);
    }
}

[rocoradi]

I have the same problem...

[wilkinsona]

Thanks for the report, but the OAuth auto-configuration is managed in a separate project. I believe the problem's already been fixed (see https://github.com/spring-projects/spring-security-oauth2-boot/issues/51 and https://github.com/spring-projects/spring-security-oauth2-boot/issues/39) and upgrading to 2.1.1.RELEASE of spring-security-oauth2-autoconfigure should fix your problem.