首先来创建两个bean 注:一定要有set/get方法,成员变量必须要同名
public class User1 { String name; String password; String phone; /**省略get/set方法**/ } public class User2 { String name; String password; String phone; /**省略get/set方法**/ }org.springframework.beans.BeanUtils
BeanUtils.copyProperties(源对象,目标对象) 测试方法:
public static void main(String[] args){ User1 user1=new User1(); user1.setName("user1_name"); user1.setPassword("user1_password"); user1.setPhone("user1_phone"); User2 user2=new User2(); BeanUtils.copyProperties(user1,user2); System.out.println(user2.toString()); }执行结果:
User2(name=user1_name, password=user1_password, phone=user1_phone)注:必须保证同名的两个成员变量类型相同,同名属性一个是包装类型,一个是非包装类型也是可以的
org.apache.commons.beanutils.BeanUtils
BeanUtils.copyProperties(目标对象,源对象) 需要引入依赖
<dependency> <groupId>commons-beanutils</groupId> <artifactId>commons-beanutils</artifactId> <version>1.9.3</version> </dependency>测试方法:
public static void main(String[] args) throws InvocationTargetException, IllegalAccessException { User1 user1=new User1(); user1.setName("user1_name"); user1.setPassword("user1_password"); user1.setPhone("user1_phone"); User2 user2=new User2(); BeanUtils.copyProperties(user2,user1); System.out.println(user2.toString()); }执行结果:
User2(name=user1_name, password=user1_password, phone=user1_phone)commons-beanutils则施加了很多的检验,包括类型的转换,甚至于还会检验对象所属的类的可访问性。BeanUtils能够顺利的完成对象属性值的复制,依赖于其对类型的识别。
原文参考https://www.jianshu.com/p/9b4f81005eb7
