BeanUtils.copyProperties的简单示例

一、新建测试实体

1.UserA

package com.dechy.hebswj.test;

public class UserA {
private String a;
    
    private String b;

    public String getA() {
        return a;
    }

    public void setA(String a) {
        this.a = a;
    }

    public String getB() {
        return b;
    }

    public void setB(String b) {
        this.b = b;
    }

}

2.UserB

package com.dechy.hebswj.test;

public class UserB {
private String a;
    
    private String b;
    
    private String c;

    public String getA() {
        return a;
    }

    public void setA(String a) {
        this.a = a;
    }

    public String getB() {
        return b;
    }

    public void setB(String b) {
        this.b = b;
    }

    public String getC() {
        return c;
    }

    public void setC(String c) {
        this.c = c;
    }

    @Override
    public String toString() {
        return "UserB [a=" + a + ", b=" + b + ", c=" + c + "]";
    }
    

}

二、测试

package com.dechy.hebswj.test;

import org.apache.commons.beanutils.BeanUtils;
import org.junit.Test;

public class userTest {
    
    @Test
    public void test() throws Exception{
        UserA userA=new UserA();
        userA.setA("a");
        userA.setB("b");
        UserB userB=new UserB();
        BeanUtils.copyProperties(userB, userA);
        System.out.println(userB);
        
    }

}

结果为

UserB [a=a, b=b, c=null]