Optional Spring bean references

Question

In my application I am using ContextLoaderListener to load context files from many jars using:

    contextConfigLocat         


        

Answer 1

With recent versions of Spring (tested with spring 4.1) and Java Configuration and Java 8, you can use Optional in parameters, and are only autowired if available.

@Autowired
public MyApplication(Optional maybeObject) {
    // do something with the optional autowired
}