annotationmain.java

此文档包含有AOP

package test.annotation;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class AnnotationMain {
	TestAn test = new TestAn();
	public static void main(String[] args) {
		// 15. Class cl = obj.getClass();
		// 16. for (Method m : cl.getDeclaredMethods())
		// 17. {
		// 18. ActionListenerFor a = m.getAnnotation(ActionListenerFor.class);
		// 19. if (a != null)
		// 20. {
		// 21. Field f = cl.getDeclaredField(a.source());
		// 22. f.setAccessible(true);
		// 23. addListener(f.get(obj), obj, m);
		// 24. }
		// 25. }
		AnnotationMain ma = new AnnotationMain();
		Class c = ma.test.getClass();
		System.out.println("----- Begin .....new  ------------");
		for (Method m : c.getDeclaredMethods()) {
			System.out.println(m.getName());
			Truth a = m.getAnnotation(Truth.class);
			if (a != null) {
				System.out.println(a.getString());
				System.out.println(a.name());
			}else{
				System.out.println("Annotation is null!");
			}
		}
		System.out.println("----- End .....new  ------------");
		Annotation[] ans = c.getAnnotations();
		Method[] methods = c.getMethods();
		for (int i = 0; i < ans.length; i++) {
			System.out.println(ans[i]);
		}
		for (int i = 0; i < methods.length; i++) {
			Annotation[] temps = methods[i].getAnnotations();
			String methodName = methods[i].getName();
			if (methodName.startsWith("anMethod")) {
				System.out.println(methods[i]);
				System.out.println("------- Annotation Of Mehtod----------");
				Annotation[] as = methods[i].getAnnotations();
				// System.out.println(as[0]);
			}
			for (int j = 0; j < temps.length; j++) {
				System.out.println(temps[j]);
			}
		}
		// the Annotation's Class
		Class truth = Truth.class;
		Annotation[] truths = truth.getAnnotations();
		for (int j = 0; j < truths.length; j++) {
			System.out.println("TypeOf this Annotation: "
					+ truths[j].annotationType());
			System.out.println();
		}

	}
}