Spring:如果未定义 bean，如何忽略 @Autowired 属性

Question

情况:我在类里面使用@Autowired 注释的属性:

public class MyClass {
    @Autowired
    protected MyAutoWiredBean myAutowiredBean;
}

是否有可能使连接这个 bean 成为可选的，即如果在某个配置文件中定义了这样的 bean - 连接它，但如果没有定义这样的 bean - 继续工作而不抛出:

org.springframework.beans.factory.BeanCreationException: 
Could not autowire field: protected MyAutoWiredBean...; 
nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException:      
No matching bean of type [com.mypackage.MyAutoWiredBean] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. 

Answer 1

你试过了吗:

@Autowired(required=false)

Javadoc :

Declares whether the annotated dependency is required. Defaults to true