java 放射的用法

package com.wonlymall.mall.modular.user.modelVO;

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

import org.springframework.stereotype.Component;

public class TestReflect {
	
	public static void main(String[] args) {
		//擷取具體類的類型
		Class<?>clazz=UserBaseInfoVO.class;
		Object obj=new Object();
		//擷取Object 類的類型
		Class clazz1=obj.getClass();
		//擷取類名
		String className=clazz.getName();
		System.out.println(className);
		//擷取類的注解
		Component c=clazz.getAnnotation(Component.class);
		System.out.println(c);
		//擷取注解的參數值
		String value=c.value();
		System.out.println(value);
		//擷取類上面的注解
		Component c1=clazz.getAnnotationsByType(Component.class)[0];
		//擷取本類的所有注解
		Annotation[]a=clazz.getDeclaredAnnotations();
		Annotation[]a1=clazz.getAnnotations();
		try {
			//根據放射擷取構造器  利用構造器建立對象
			//Constructor constructor=clazz.getConstructor(Integer.class);
			//UserBaseInfoVO vo=(UserBaseInfoVO) constructor.newInstance(1121);
			//System.out.println(vo.getEscOrgId());
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} 
		//擷取本類中的所有構造器
		Constructor[]con=clazz.getDeclaredConstructors();
		System.out.println(con);
		//擷取父類
		Class superClazz=clazz.getSuperclass();
		System.out.println(superClazz);
		Method[]method=clazz.getDeclaredMethods();
		System.out.println(method);
		try {
			UserBaseInfoVO vo=(UserBaseInfoVO) clazz.newInstance();
			Field field=clazz.getDeclaredField("escOrgId");
			//擷取屬性上面的注解
			//field.getAnnotation(annotationClass)
			//擷取參數類型
			//field.getGenericType().toString();
			field.setAccessible(true);
			field.set(vo, 111);
			System.out.println(vo.getEscOrgId());
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//擷取類的所有屬性
		//Field[]fields=clazz.getDeclaredFields();
		//for(Field f:fields) {
			//String fieldName=f.getName();
			//System.out.println(f.getName());
		//}
		//Field[]fields=clazz.getSuperclass().getFields();
		//for(Field f:fields) {
			//String fieldName=f.getName();
			//System.out.println(f.getName());
		//}
	}

}