实例化对象后，Guice调用init方法 [英] Guice call init method after instantinating an object

问题描述

是否可以告诉Guice在之后调用某些方法(即init()) 实例化给定类型的对象?

Is it possible to tell Guice to call some method (i.e. init()) after instantinating an object of given type?

我在EJB 3中寻找类似于@PostConstruct批注的功能.

I look for functionality similar to @PostConstruct annotation in EJB 3.

推荐答案

实际上，这是可能的.

您需要定义一个TypeListener才能使功能正常运行.在模块定义中遵循以下内容:

You need to define a TypeListener to get the functionality going. Something along the lines of the following in your module definition:

bindListener(Matchers.subclassesOf(MyInitClass.class), new TypeListener() {
    @Override
    public <I> void hear(final TypeLiteral<I> typeLiteral, TypeEncounter<I> typeEncounter) {
        typeEncounter.register(new InjectionListener<I>() {
            @Override
            public void afterInjection(Object i) {
                MyInitClass m = (MyInitClass) i;
                m.init();
            }
        });
    }
});

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