Question

Spring Boot自动配置支持JSR-330 javax.inject.Inject注释（如果在classpath可用）。我想停止此cos，因为它在CDI上使用javax.enterprise.event.Event时会抛出NPE。

之所以这样做，是因为Spring自动注册4默认为BeanPostProcessings，而AutowiredAnnotationBeanPostProcessor处理@Autowired和@Value。而且还要检查类路径以注册@Inject。

错误示例：

@Named
@ViewScoped
public class FormMB implements Serializable {
    @Inject
    private Event<MyEvent> myEvent;
[...]
}

引发异常：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type javax.enterprise.event.Event<MyEvent>' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@javax.inject.Inject()}

更深入地挖掘我发现，Spring的@Inject将JSR-330 autowiredAnnotationTypes注释作为AutowiredAnnotationBeanPostProcessor包含在类路径中。任何建议都可以阻止Spring尝试自动装配@Inject注释，或者至少阻止他自动装配javax.enterprise.event.Event 尝试过此操作：Stackoverflow，但没有成功。

@SuppressWarnings("unchecked")
    public AutowiredAnnotationBeanPostProcessor() {
        this.autowiredAnnotationTypes.add(Autowired.class);
        this.autowiredAnnotationTypes.add(Value.class);
        try {
            this.autowiredAnnotationTypes.add((Class<? extends Annotation>)
                    ClassUtils.forName("javax.inject.Inject", AutowiredAnnotationBeanPostProcessor.class.getClassLoader()));
            logger.info("JSR-330 'javax.inject.Inject' annotation found and supported for autowiring");
        }
        catch (ClassNotFoundException ex) {
            // JSR-330 API not available - simply skip.
        }
    }

所以我想重写AutowiredAnnotationBeanPostProcessor，我已经能够像这样包含我自己的BeanPostProcessor：

SpringApplication application = new SpringApplication(AppConfig.class);
        application.setWebApplicationType(WebApplicationType.NONE);
        MyAutowiredAnnotationBeanPostProcessor autowiredAnnotationBeanPostProcessor = new MyAutowiredAnnotationBeanPostProcessor();
        autowiredAnnotationBeanPostProcessor.setBeanFactory(application.run().getBeanFactory());

覆盖默认的AutowiredAnnotationBeanPostProcessor以停止对JSR-330的支持

0 个答案: