如何禁用特定bean的Spring自动装配? [英] How to disable Spring autowiring for a certain bean?

问题描述

jar(外部库)中有一些类在内部使用Spring. 因此，库类的结构类似于:

There are some class in jar (external library), that uses Spring internally. So library class has structure like a:

@Component
public class TestBean {

    @Autowired
    private TestDependency dependency;

    ...
}

并且库提供用于构造对象的API:

And library provides API for constructing objects:

public class Library {

    public static TestBean createBean() {
        ApplicationContext context = new AnnotationConfigApplicationContext(springConfigs);
        return context.getBean(TestBean);
    }
}

在我的应用程序中，我有配置:

In my application, I have config:

@Configuration
public class TestConfig {

    @Bean
    public TestBean bean() {
        return Library.createBean();
    }
}

抛出异常:Field dependency in TestBean required a bean of type TestDependency that could not be found..

但是Spring不应该尝试注入某些东西，因为bean已经配置好了.

But Spring should not trying to inject something, because bean is already configured.

我可以为某些bean禁用Spring自动装配吗?

Can i disable Spring autowiring for a certain bean?

推荐答案

基于@Juan的回答，创建了一个帮助程序来包装不自动接线的bean:

Based on @Juan's answer, created a helper to wrap a bean not to be autowired:

public static <T> FactoryBean<T> preventAutowire(T bean) {
    return new FactoryBean<T>() {
        public T getObject() throws Exception {
            return bean;
        }

        public Class<?> getObjectType() {
            return bean.getClass();
        }

        public boolean isSingleton() {
            return true;
        }
    };
}

...

@Bean
static FactoryBean<MyBean> myBean() {
    return preventAutowire(new MyBean());
}

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