BeanUtils.copyProperties()的使用

1、对象属性复制赋值（将 source 对象中与 target 对象中相同属性名的属性赋值）：

BeanUtils.copyProperties(source, target);

演示：

 

首先定义两个类

LongDistanceBean 类：

public class LongDistanceBean{

    /**
     * 用户ID
     */
    private String userId;
    /**
     * 居住城市
     */
    private String liveCity;
    /**
     * 工作城市
     */
    private String workCity;
    /**
     * 工作电话
     */
    private String workPhone;

    /**
     *  构造器
     */
 public LongDistanceBean(String userId, String liveCity, String workCity, String workPhone) {
        this.userId = userId;
        this.liveCity = liveCity;
        this.workCity = workCity;
        this.workPhone= workPhone;
    }

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public String getLiveCity() {
        return liveCity;
    }

    public void setLiveCity(String liveCity) {
        this.liveCity = liveCity;
    }

    public String getWorkCity() {
        return workCity;
    }

    public void setWorkCity(String workCity) {
        this.workCity = workCity;
    }

    public String getWorkPhone() {
        return workPhone;
    }

    public void setWorkPhone(String workPhone) {
        this.workPhone = workPhone;
    }

    @Override
    public String toString() {
        return "LongDistanceBean{" +
                "userId='" + userId + '\'' +
                ", liveCity='" + liveCity + '\'' +
                ", workCity='" + workCity + '\'' +
                ", workPhone='" + workPhone + '\'' +
                '}';
    }
}

LocalBean 类：

public class LocalBean{

    /**
     * 用户ID
     */
    private String userId;
    /**
     * 居住城市
     */
    private String liveCity;
    /**
     * 工作城市
     */
    private String workCity;
    /**
     * 工作电话
     */
    private String workPhone;

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public String getLiveCity() {
        return liveCity;
    }

    public void setLiveCity(String liveCity) {
        this.liveCity = liveCity;
    }

    public String getWorkCity() {
        return workCity;
    }

    public void setWorkCity(String workCity) {
        this.workCity = workCity;
    }

    public String getWorkPhone() {
        return workPhone;
    }

    public void setWorkPhone(String workPhone) {
        this.workPhone = workPhone;
    }

    @Override
    public String toString() {
        return "LocalBean{" +
                "userId='" + userId + '\'' +
                ", liveCity='" + liveCity + '\'' +
                ", workCity='" + workCity + '\'' +
                ", workPhone='" + workPhone + '\'' +
                '}';
    }
}

给类 LongDistanceBean 添加数据：

LongDistanceBeand longDistance= new LongDistanceBean("10001", "江西", "上海", "100-110-111");

执行以下代码：

public static void main(String[] args) {
       LongDistanceBean longDistance= new LongDistanceBean("10001", "江西", "上海", "100-110-111");
        System.out.println(longDistance);
        LocalBean localBean= new LocalBean();
        System.out.println(LocalBean);
        System.out.println("开始复制");
        BeanUtils.copyProperties(longDistance, localBean);
        System.out.println(longDistance);
        System.out.println(localBean);
}

Copy 结束，结果为：