将xml bean自动导入@Configuration类

Question

在我的Spring项目中，我通常使用以下三个文件下的xml配置：

package com.medkhelifi.tutorials.todolist.conf;

/**
/* all imports goes here.
**/

@Configuration
@ImportResource({"classpath*:conf/applicationContext-db.xml"})
@EnableGlobalMethodSecurity (prePostEnabled = true, securedEnabled = true)
public class AclMethodSecurityConfiguration extends GlobalMethodSecurityConfiguration {

    @Autowired
    DataSource dataSource;

    @Bean
    public MethodSecurityExpressionHandler defaultMethodSecurityExpressionHandler() {
        DefaultMethodSecurityExpressionHandler expressionHandler = new DefaultMethodSecurityExpressionHandler();
        AclPermissionEvaluator permissionEvaluator = new AclPermissionEvaluator(aclService());
        expressionHandler.setPermissionEvaluator(permissionEvaluator);
        return expressionHandler;
    }


    @Bean
    public JdbcMutableAclService aclService() {
        return new JdbcMutableAclService(dataSource, lookupStrategy(), aclCache());
    }

    @Bean
    public AclAuthorizationStrategy aclAuthorizationStrategy() {
        return new AclAuthorizationStrategyImpl(new SimpleGrantedAuthority("ROLE_ADMIN"));
    }


    @Bean
    public PermissionGrantingStrategy permissionGrantingStrategy() {
        return new DefaultPermissionGrantingStrategy(new ConsoleAuditLogger());
    }


    @Bean
    public EhCacheBasedAclCache aclCache() {
        return new EhCacheBasedAclCache(
                    aclEhCacheFactoryBean().getObject(),
                    permissionGrantingStrategy(),
                    aclAuthorizationStrategy()
                    );
    }

    @Bean
    public EhCacheFactoryBean aclEhCacheFactoryBean() {
        EhCacheFactoryBean ehCacheFactoryBean = new EhCacheFactoryBean();
        ehCacheFactoryBean.setCacheManager(aclCacheManager().getObject());
        ehCacheFactoryBean.setCacheName("aclCache");
        return ehCacheFactoryBean;
    }

    @Bean
    public EhCacheManagerFactoryBean aclCacheManager() {
        return new EhCacheManagerFactoryBean();
    }

    @Bean
    public LookupStrategy lookupStrategy() {
        return new BasicLookupStrategy(
                    dataSource,
                    aclCache(),
                    aclAuthorizationStrategy(),
                    new ConsoleAuditLogger());
    }
}

<!--        DATASOURCE                      -->
<bean name="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="${database.driver}"/>
    <property name="url" value="${database.url}"/>
    <property name="username" value="${database.username}"/>
    <property name="password" value="${database.password}"/>
</bean>

我已经将此bean用于在同一个applicationContext-db.xml文件中定义的Sessionfactory bean。

PS：当我删除扩展类GlobalMethodSecurityConfiguration时，我的数据源已定义，但我需要这个org.springFramework.Security.config.annotation.method.configuration类来设置Spring Security ACL配置。

Answer 1

我找到了一种使用BeanFactoryAware接口定义数据源bean的方法。BeanFactoryAware用于注入BeanFactory对象。这样我们就可以访问创建对象的BeanFactory。

@EnableGlobalMethodSecurity (prePostEnabled = true, securedEnabled = true)
@Configuration
@ImportResource({"classpath:/conf/applicationContext-db.xml"})
public class AclMethodSecurityConfiguration extends GlobalMethodSecurityConfiguration implements BeanFactoryAware {

    DataSource dataSource;

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.dataSource = beanFactory.getBean("dataSource", DataSource.class);
    }
    // rest of code goes here 
}

我读到，如果我们使用这种技术，这意味着我们做错了什么，我将继续寻找一个适当的解决方案。