package com.lanqiao.demo;
/**
* 创建人
* @author qichunlin
*
*/
public class Person {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
//有参构造方法
public Person(String name,int id) {
super();
this.id = id;
this.name = name;
}
//无参构造方法
public Person() {
super();
// TODO Auto-generated constructor stub
}
}
package com.lanqiao.demo;
/**
* 复制对象
* @author qichunlin
*
*/
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
public class ReflectPerson {
public Object copy(Object object) throws Exception{
//加载类
Class c = object.getClass();
//获取类中的构造方法
Constructor ct = c.getConstructor(new Class[] {});
//在构造方法中传值
Object obj = ct.newInstance(new Object[] {});
//获取所有 属性 返回数组
Field[] f = c.getDeclaredFields();
for(Field field : f) {
String name = field.getName();
//System.out.println("a"+name);
//截取
String firstLetter = name.substring(0, 1).toUpperCase();
String getMethodName = "get"+firstLetter+name.substring(1);
String setMethodName = "set"+firstLetter+name.substring(1);
//获取无参构造方法
Method getMethod = c.getMethod(getMethodName, new Class[] {});
Method setMethod = c.getMethod(setMethodName, new Class[] {field.getType()});
//执行赋值无参构造方法
Object value = getMethod.invoke(object, new Object[] {});
System.out.println(value);
//执行赋值有参构造方法
setMethod.invoke(obj, new Object[] {value});
}
return obj;
}
}
package com.lanqiao.demo;
import java.lang.reflect.InvocationTargetException;
/**
* @author qichunlin
*
*/
public class Test {
public static void main(String[] args) throws Exception,InvocationTargetException{
ReflectPerson rp = new ReflectPerson();
Person p = new Person("Legend",22);
Person obj = (Person)rp.copy(p);
System.out.println(obj.getName()+" "+obj.getId());
}
}