Which is simpler than creating custom annotation. Then you can add a method to MyService that accepts a MyRequest object and decides if it can handle that request. autowired Share Improve this question Follow edited at 12:11 Community Bot 1 1 asked at 7:22 Anubha 1,345 6 23 35 As mentioned in other answers you can put autowire on a non-static method and modify desired static filed inside it. Constructor or setter injection is a better choice. You can Autowired a List of MyService, which will create a List of all beans that implement the MyService interface. The type is not only limited to the Java datatype it also includes interface types. However field injection is typically a bad idea as you might have problems with testing such components. The Spring Autowired always works by type. In your example when instance of M圜lass will be created for the context, it will invoke default constructor of M圜lass class and then set it's dependency via reflection. It will try to invoke constructors and provide any dependencies for beans that require them. When Spring context is being created it has to create beans. at java.base/.UnixPath.normalizeAndCheck(UnixPath. A class annotated by Component is registered to a spring bean and its instance is managed by spring as a singleton by default. Use the Autowired object in a PostConstruct method, which is executed after dependency injection is done, as davidxxx explained above. To create a context you have to tell Spring where to look for bean definitions : you can provide xml file, java configuration or enable auto-scanning of components in given packages. It seems that you are trying to integrate Spring and Java WebSocket API. In such case, property name and bean name should be same. byName: The byName mode injects the object dependency according to name of the bean. Spring IOC container (application context) is responsible for holding beans and return them whenever it is asked to do so. Autowiring Modes Spring supports the following autowiring modes: no: It’s the default autowiring mode. (Then you can mark one of them with or use configuration class to define your beans). (Since Spring 4.3 you do not even have to mark this constructor with If there are multiple args constructor defined then you will have to resolve ambiguity, since Spring will not know which one to choose. If there is a constructor defined, which requires some dependencies then Spring will have to invoke this one and provide dependencies for it.If there is a no-args constructor defined explicitly then Spring invoke this one since there is no other constructor defined.If there is no constructor defined - then Spring will invoke the implicit default constructor generated by compiler.This means an exception will be thrown when a. When creating beans Spring will have to invoke constructors that the target bean class contains : Autowired with required false By default, the Autowired annotation implies that the dependency is required.
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