如何覆盖spring框架bean？

Question

我想自定义Spring Security提供的OAuth授权服务器的一些代码。负责生成/ oauth / authorize的代码是一个名为AuthorizationEndpoint的bean。在AuthorizationServerEndpointsConfiguration类中，以下代码创建AuthorizationEndpoint类的bean：

@Bean
public AuthorizationEndpoint authorizationEndpoint() throws Exception {
    AuthorizationEndpoint authorizationEndpoint = new AuthorizationEndpoint();
    FrameworkEndpointHandlerMapping mapping = getEndpointsConfigurer().getFrameworkEndpointHandlerMapping();
    authorizationEndpoint.setUserApprovalPage(extractPath(mapping, "/oauth/confirm_access"));
    authorizationEndpoint.setProviderExceptionHandler(exceptionTranslator());
    authorizationEndpoint.setErrorPage(extractPath(mapping, "/oauth/error"));
    authorizationEndpoint.setTokenGranter(tokenGranter());
    authorizationEndpoint.setClientDetailsService(clientDetailsService);
    authorizationEndpoint.setAuthorizationCodeServices(authorizationCodeServices());
    authorizationEndpoint.setOAuth2RequestFactory(oauth2RequestFactory());
    authorizationEndpoint.setOAuth2RequestValidator(oauth2RequestValidator());
    authorizationEndpoint.setUserApprovalHandler(userApprovalHandler());
    return authorizationEndpoint;
}

我想用新的自定义bean覆盖它。我创建了一个扩展AuthorizationEndpoint的类。现在，我已经在新类中粘贴了相同的代码。

public class AuthorizationEndpointCustom extends AuthorizationEndpoint {

创建bean：

    @Autowired
    private ClientDetailsService clientDetailsService;

    @Autowired
    AuthorizationServerEndpointsConfiguration asec;


    @Bean
//  @Order(value = Ordered.LOWEST_PRECEDENCE)
    @Primary
    public AuthorizationEndpoint authorizationEndpoint () {

        AuthorizationEndpointCustom authorizationEndpoint = new AuthorizationEndpointCustom();
        FrameworkEndpointHandlerMapping mapping = asec.getEndpointsConfigurer().getFrameworkEndpointHandlerMapping();
        authorizationEndpoint.setUserApprovalPage(extractPath(mapping, "/oauth/confirm_access"));
        authorizationEndpoint.setProviderExceptionHandler(asec.getEndpointsConfigurer().getExceptionTranslator());
        authorizationEndpoint.setErrorPage(extractPath(mapping, "/oauth/error"));
        authorizationEndpoint.setTokenGranter(asec.getEndpointsConfigurer().getTokenGranter());
        authorizationEndpoint.setClientDetailsService(clientDetailsService);
        authorizationEndpoint.setAuthorizationCodeServices(asec.getEndpointsConfigurer().getAuthorizationCodeServices());
        authorizationEndpoint.setOAuth2RequestFactory(asec.getEndpointsConfigurer().getOAuth2RequestFactory());
        authorizationEndpoint.setOAuth2RequestValidator(asec.getEndpointsConfigurer().getOAuth2RequestValidator());
        authorizationEndpoint.setUserApprovalHandler(asec.getEndpointsConfigurer().getUserApprovalHandler());

        return authorizationEndpoint;
    }

    private String extractPath(FrameworkEndpointHandlerMapping mapping, String page) {
        String path = mapping.getPath(page);
        if (path.contains(":")) {
            return path;
        }
        return "forward:" + path;
    }

当我尝试创建这个新类的bean时，遇到以下错误：

申请无法开始

---

说明：

bean'authorizationEndpoint'，在org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration，无法注册。那个名字的豆已经在类路径资源中定义[com / example / demo / AuthorizationServerConfig.class]和覆盖是禁用。

动作：

考虑重命名一个bean或通过设置启用覆盖spring.main.allow-bean-definition-overriding = true

错误通过将建议的配置添加到application.properties而消失。但是新bean不会替代框架bean。在代码的另一部分中，我从applicationContext访问了AuthorizationEndpoint。我调用了该对象的.getClass（），它与框架中的bean是相同的：

“ org.springframework.security.oauth2.provider.endpoint.AuthorizationEndpoint”

如何强制spring使用我的bean？

Answer 1

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class AppConfig {

    @Bean
    public AuthorizationEndpoint authorizationEndpoint() {
        if(...) return new AuthorizationEndpoint();
        else return new AuthorizationEndpointCustom();
    }
}