Spring的反射机制实现类似Spring框架管理的效果-----Spring框架

今天药忘吃喽~ 2024-03-23 21:40 61阅读 0赞

>     package com.powernode.reflect;
>     
>     
>     import java.lang.reflect.Constructor;
>     import java.lang.reflect.Field;
>     import java.lang.reflect.Method;
>     
>     public class Reflection
>     {
>         public static void main(String[] args) throws Exception
>         {
>             Class clazz = Class.forName("com.powernode.reflect.User");
>             Constructor constructor = clazz.getDeclaredConstructor();
>             User user = (User)constructor.newInstance();
>             Field field = clazz.getDeclaredField("age");
>             field.setAccessible(true);
>             field.set(user,5);
>             System.out.println(user);
>             Method method = clazz.getDeclaredMethod("setAge",int.class);
>             method.invoke(user,15);
>             System.out.println(user);
>         }
>     }
> 
>     package com.powernode.reflect;
>     
>     
>     import java.lang.reflect.Constructor;
>     import java.lang.reflect.Field;
>     import java.lang.reflect.Method;
>     
>     public class Reflection
>     {
>         public static void main(String[] args) throws Exception
>         {
>             Class clazz = Class.forName("com.powernode.reflect.User");
>             Constructor constructor = clazz.getDeclaredConstructor();
>             User user = (User)constructor.newInstance();
>             Field field = clazz.getDeclaredField("age");
>             field.setAccessible(true);
>             field.set(user,5);
>             System.out.println(user);
>             Method method = clazz.getDeclaredMethod("setAge",int.class);
>             method.invoke(user,15);
>             System.out.println(user);
>         }
>     }