java - 在 spring 中以编程方式将类的实例绑定(bind)到限定符

Question

我有从配置值创建的同一类的实例，因此我需要从该配置值注入(inject)/ Autowiring 它们。我在 guice 中这样做，如下所示:

for (String s : config.getStrings()) {
    bind(Foo.class).annotatedWith(Names.named(s)).toInstance(new Foo(s));
}

有没有办法在Spring中做这样的事情，或者有没有办法使用FactoryBean之类的东西来创建给定的类的实例限定符？

Answer 1

public final class FLEXSyncFactory implements ApplicationContextAware {

    private static AbstractApplicationContext context;

    public void setApplicationContext(ApplicationContext applicationContext)
    throws BeansException {
        context = (AbstractApplicationContext) applicationContext;
    }

并注册bean的别名

DefaultListableBeanFactory beanFactory = (DefaultListableBeanFactory) context.getBeanFactory();
Foo fooBean = beanFactory.getBean(Foo.class);
beanFactory.initializeBean(fooBean, "TheAliasForBeanNameYouNeed");
beanFactory.autowireBeanProperties(fooBean, AutowireCapableBeanFactory.AUTOWIRE_BY_TYPE, true);