BeanUtils实现对象拷贝（三）

package beanutil;

import java.lang.reflect.InvocationTargetException;
import java.util.Date;

import org.apache.commons.beanutils.BeanUtils;

import entity.Student;

/**
 * 从一个javaBean对象到另一个javaBean对象；
 * 拷贝所有属性。
 *
 * @author mzy
 *
 */
public class Demo03 {
	public static void main(String[] args) {
		Student s = new Student();
		s.setId(1);
		s.setName("mzy");
		s.setScore(99.99);
		s.setGender(true);
		s.setBirth(new Date());

		try {
			Object s2 = Class.forName("entity.Student").newInstance();
			// 把值从后者拷贝到前者中去：
			BeanUtils.copyProperties(s2, s);

			System.out.println(s2);

		} catch (InstantiationException | IllegalAccessException | ClassNotFoundException | InvocationTargetException e) {
			e.printStackTrace();
		}

	}
}

javaBean

package entity;

import java.util.Date;
/**
 * 一个测试用：
 * 		student，javaBean
 * @author mzy
 *		一个标准的javaBean：
 *			1) 属性只要是private修饰的；
 *			2) 提供setter和getter方法；
 *			3) 提供无参构造。
 *		就行了；有参构造等不是必须的。
 */
public class Student {
	private int id;
	private String name;
	private double score;
	private boolean gender;
	private Date birth;
	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;
	}
	public double getScore() {
		return score;
	}
	public void setScore(double score) {
		this.score = score;
	}
	public boolean isGender() {
		return gender;
	}
	public void setGender(boolean gender) {
		this.gender = gender;
	}
	public Date getBirth() {
		return birth;
	}
	public void setBirth(Date birth) {
		this.birth = birth;
	}

	@Override
	public String toString() {
		return "Student [id=" + id + ", name=" + name + ", score=" + score + ", gender=" + gender + ", birth=" + birth
				+ "]";
	}
}