How to scan classes for annotations?

Question

I have a plain jane servlets web application, and some of my classes have the following annotations:

@Controller
@RequestMapping(name = \"/blog/\")
public cl         


        

Answer 1

The following code worked for me, the below example uses Java 11 and spring ClassPathScanningCandidateComponentProvider. The usage is to find all classes annotated with @XmlRootElement

public static void main(String[] args) throws ClassNotFoundException {
    var scanner = new ClassPathScanningCandidateComponentProvider(false);
    scanner.addIncludeFilter(new AnnotationTypeFilter(XmlRootElement.class));

    //you can loop here, for multiple packages
    var beans = scanner.findCandidateComponents("com.example");
    for (var bean : beans) {
        var className = bean.getBeanClassName();
        Class clazz = Class.forName(className);
        //creates initial JAXBContext for later usage
        //JaxbContextMapper.get(clazz);
        System.out.println(clazz.getName());
    }
}