1 import net.dsmxx.PersonFk;
2
3 import java.lang.reflect.Constructor;
4 import java.lang.reflect.InvocationTargetException;
5
6 /**
7 * Created with IDEA
8 * author:foreign
9 * Date:2019/9/29
10 * Time:20:02
11 */
12 public class ReflectionFk {
13 public static void main(String[] args) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
14 Class clazz = PersonFk.class;
15 //1 获取public的构造方法
16 Constructor[] constructors = clazz.getConstructors();
17 for (Constructor constructor : constructors) {
18 System.out.println("public的构造方法：" + constructor);
19 }
20 //2 根据参数获取构造方法
21 Constructor constructor = clazz.getConstructor(new Class[]{String.class, Integer.class, Boolean.class});
22 System.out.println("String类型的构造方法：" + constructor);
23 //3 构造方法参数
24 Class[] parameterTypes = constructor.getParameterTypes();
25 for (Class para : parameterTypes) {
26 System.out.println("构造方法参数：" + para);
27 }
28 //利用构造方法对象实例化一个类
29 Constructor constructor1 = clazz.getConstructor(new Class[]{String.class, Integer.class, Boolean.class});
30 Object o = constructor1.newInstance("foreign", 27, true);
31 System.out.println("对象：" + o);
32 PersonFk personFk = (PersonFk) o;
33 System.out.println("对象name：" + personFk.getName());
34 System.out.println("对象name：" + personFk.getAge());
35 System.out.println("对象name：" + personFk.getGender());
36 }
37 }
