春ブーツ（のOAuth2およびREST）：BeanCreationError

Question

私はSpring Bootで新しいRESTサービスを作成しました。さらに、Spring Security（HTTPS）とBasic Authenticationをメモリクライアントの資格情報とともに追加しました。これは絶対にうまくいっており、私は安価なサービス（HATEOASを使用）から基本認証を提供することでPostmanで応答を受け取ることができました。私はOAuth2 authorization serverを実装すると、正常にログインしたときに、私のリソースを提供する方法についてのオンラインガイドに従うことをしようとしたが

。アプリケーションを起動しようとすると、私は次のエラーを得た：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultServletHandlerMapping' defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.HandlerMapping]: Factory method 'defaultServletHandlerMapping' threw exception; nested exception is java.lang.IllegalArgumentException: A ServletContext is required to configure default servlet handling 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1134) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1028) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at at.fh.ima.swengs.rentacar.RentACarBackendApplication.main(RentACarBackendApplication.java:13) [classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_102] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_102] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_102] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_102] 
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.HandlerMapping]: Factory method 'defaultServletHandlerMapping' threw exception; nested exception is java.lang.IllegalArgumentException: A ServletContext is required to configure default servlet handling 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    ... 23 common frames omitted 
Caused by: java.lang.IllegalArgumentException: A ServletContext is required to configure default servlet handling 
    at org.springframework.util.Assert.notNull(Assert.java:115) ~[spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer.<init>(DefaultServletHandlerConfigurer.java:53) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.defaultServletHandlerMapping(WebMvcConfigurationSupport.java:498) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$d865ed2f.CGLIB$defaultServletHandlerMapping$38(<generated>) ~[spring-boot-autoconfigure-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$d865ed2f$$FastClassBySpringCGLIB$$d8ce767b.invoke(<generated>) ~[spring-boot-autoconfigure-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$d865ed2f.defaultServletHandlerMapping(<generated>) ~[spring-boot-autoconfigure-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_102] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_102] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_102] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_102] 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    ... 24 common frames omitted 


Process finished with exit code 0 

私が使っていたチュートリアルでは、以下の通りです：用実体である私の標準アプリケーションクラスと私のモデルのほかにhttp://websystique.com/spring-security/secure-spring-rest-api-using-oauth2/

、私のMySQL DBエンティティ、私は何も変わっていません。私はRest Controllerせずに、このチュートリアル、に記載されたコードを追加しています。

RentACarApplication:

package at.fh.ima.swengs.rentacar; 

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 


@SpringBootApplication 
public class RentACarBackendApplication { 


    public static void main(String[] args) { 

     SpringApplication.run(RentACarBackendApplication.class, args); 
    } 

} 

Answer 1

Iはまた、リンクが上記提供されたため、チュートリアルに含まれていた次のクラスを削除することによって問題を解決しました。私は削除している

クラスはGlobalMethodSecurity命名されました。チュートリアルでは、このクラスは"will activate @PreFilter, @PostFilter, @PreAuthorize @PostAuthorize annotations, if we want to use them"だと言います。 誰かがこのクラスの目的が何であるか説明することができますか？

コード：

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.security.access.expression.method.MethodSecurityExpressionHandler; 
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity; 
import org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration; 
import org.springframework.security.oauth2.provider.expression.OAuth2MethodSecurityExpressionHandler; 

@Configuration 
@EnableGlobalMethodSecurity(prePostEnabled = true, proxyTargetClass = true) 
public class MethodSecurityConfig extends GlobalMethodSecurityConfiguration { 
    @Autowired 
    private OAuth2SecurityConfiguration securityConfig; 

    @Override 
    protected MethodSecurityExpressionHandler createExpressionHandler() { 
     return new OAuth2MethodSecurityExpressionHandler(); 
    } 
}