你需要即时声明新bean并将它们注入Spring的应用程序上下文中，就像它们只是普通bean一样，这意味着它们必须经受代理，后处理等操作，即它们必须经受Spring bean生命周期的约束。 。

请参阅BeanDefinitionRegistryPostProcessor.postProcessBeanDefinitionRegistry()方法 javadocs。这正是你所需要的，因为它使你可以在装入常规bean定义之后 但 实例化任何单个bean之前修改Spring的应用程序上下文。

@Configuration
public class ConfigLoader implements BeanDefinitionRegistryPostProcessor {

    private final List<String> configurations;

    public ConfigLoader() {
        this.configurations = new LinkedList<>();
        // TODO Get names of different configurations, just the names!
        // i.e. You could manually read from some config file
        // or scan classpath by yourself to find classes 
        // that implement MyConfiguration interface.
        // (You can even hardcode config names to start seeing how this works)
        // Important: you can't autowire anything yet, 
        // because Spring has not instantiated any bean so far!
        for (String readConfigurationName : readConfigurationNames) {
            this.configurations.add(readConfigurationName);
        }
    }

    public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
        // iterate over your configurations and create the beans definitions it needs
        for (String configName : this.configurations) {
            this.quartzConfiguration(configName, registry);
            this.quartzModule(configName, registry);
            this.healthCheck(configName, registry);
            // etc.
        }
    }

    private void quartzConfiguration(String configName, BeanDefinitionRegistry registry) throws BeansException {
        String beanName = configName + "_QuartzConfiguration";
        BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(QuartzConfiguration.class).setLazyInit(true); 
        // TODO Add what the bean needs to be properly initialized
        // i.e. constructor arguments, properties, shutdown methods, etc
        // BeanDefinitionBuilder let's you add whatever you need
        // Now add the bean definition with given bean name
        registry.registerBeanDefinition(beanName, builder.getBeanDefinition());
    }

    private void quartzModule(String configName, BeanDefinitionRegistry registry) throws BeansException {
        String beanName = configName + "_QuartzModule";
        BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(QuartzModule.class).setLazyInit(true); 
        builder.addConstructorArgReference(configName + "_QuartzConfiguration"); // quartz configuration bean as constructor argument
        // Now add the bean definition with given bean name
        registry.registerBeanDefinition(beanName, builder.getBeanDefinition());
    }

    private void healthCheck(String configName, BeanDefinitionRegistry registry) throws BeansException {
        String beanName = configName + "_HealthCheck";
        BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(HealthCheck.class).setLazyInit(true); 
        // TODO Add what the bean needs to be properly initialized
        // i.e. constructor arguments, properties, shutdown methods, etc
        // BeanDefinitionBuilder let's you add whatever you need
        // Now add the bean definition with given bean name
        registry.registerBeanDefinition(beanName, builder.getBeanDefinition());
    }

    // And so on for other beans...
}

这有效地声明了你需要的bean，并将它们注入Spring的应用程序上下文中，每种配置都有一组bean。你必须依靠某种命名模式，然后在需要的地方通过名称自动连接bean：

@Service
public class MyService {

    @Resource(name="config1_QuartzConfiguration")
    private QuartzConfiguration config1_QuartzConfiguration;

    @Resource(name="config1_QuartzModule")
    private QuartzModule config1_QuartzModule;

    @Resource(name="config1_HealthCheck")
    private HealthCheck config1_HealthCheck;

    ...

}

笔记：

1. 如果你要从文件中手动读取配置名称，请使用Spring的ClassPathResource.getInputStream()。

2. 如果你自己扫描类路径，强烈建议你使用令人惊叹的Reflections库。

3. 你必须为每个bean定义手动设置所有属性和依赖项。每个bean定义都独立于其他bean定义，即，你不能重用它们，也不能在另一个内部设置它们，等等。想想它们就像你在以旧的XML方式声明bean一样。

4. 检查BeanDefinitionBuilder javadocs和GenericBeanDefinition javadocs以获得更多详细信息。