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 + "]"; } }