bindFactory 不注入字段

bindFactory does not inject fields

我有此代码来提供自定义可注入对象:

    config.register(new AbstractBinder() {
        @Override
        protected void configure() {
            delegatorFactory = ...; //custom factory to delegate to
            bindFactory(new Factory<Object>() {
                @Inject
                private Provider<ContainerRequestContext> req;

                @Override
                public void dispose(Object arg0) {
                }

                @Override
                public Object provide() {
                    // req is needed but is null
                }
            }).to(delegatorFactory.getType()).in(RequestScoped.class);
        }
    });

不幸的是,正如 provide() 中的注释所揭示的,req 字段在执行时没有被注入(我需要那个位置的 ContainerRequestContext)。 我缺少什么让它像这样工作,即注入工厂的字段?

用class绑定它。大多数时候,当你开始自己实例化东西时,你就失去了注入的好处。所以只需使用 class

bindFactory(YourFactoryClass.class)

更新

要让注入器手动注入工厂,可以使用Feature

public class YourFeature implements Feature {
    @Override
    public void configure(FeatureContext context) {
        final ServiceLocator locator = ServiceLocatorProvider.getLocator(context);

        locator.inject(anyObject);
  
        context.register(new YourAbstractBinder());
    }
}

config.register(new YourFeature());