package cn.tx.reflect;

 import java.lang.reflect.Constructor;

 import java.lang.reflect.Field;

 import java.lang.reflect.Method;

 /**

  * 反射复制对象

  * @author Administrator

  *

  */

 public class ReflectLearn5 {

     public static void main(String[] args) throws Exception {

         Person p = new Person(3,"jack","america");

         Object obj = copyOjbect(p);

         System.out.println(obj);

     }

     public static Object copyOjbect(Object obj) throws Exception{

         //获得传递过来的对象的属性和构造器

         Class<? extends Object> class1 = obj.getClass();

         Field[] fields = class1.getDeclaredFields();

         Constructor constructor = class1.getConstructor();

         Object instance = constructor.newInstance(null);

         for (Field f : fields) {

             //获得属性名字

             String name = f.getName();

             //获得属性类型

             Class<?> type = f.getType();

             //获得属性对应的set方法

             String setMethodName = "set"+ name.substring(0,1).toUpperCase()+name.substring(1);

             String getMethodName = "get"+ name.substring(0,1).toUpperCase()+name.substring(1);

             //获得get方法

             Method gmethod = class1.getDeclaredMethod(getMethodName, null);

             //调用get方法获得被复制对象的一个属性值

             Object gresult = gmethod.invoke(obj, null);

             //get方法的参数类型是string,返回值类型也是

             Method smethod = class1.getDeclaredMethod(setMethodName,type);

 //            Method smethod = class1.getDeclaredMethod(setMethodName,gmethod.getReturnType());

             smethod.invoke(instance, gresult);

         }

         return instance;

     }

 }