java - java中如何将属性从一个对象复制到另一个对象

Question

我有两个对象 Employee和 Customer具有相似的对象属性，如 name, id etc我想从 List<Employee> empList 填充对象，反之亦然至 List<Customer> customerList反之亦然。

   List<Employee> empList=getEmployeeList();
   // Here is what i am trying so far
   List<Customer> cutomers=new ArrayList<Customer>();
   empList.foreach(e->{
     Customer customer = new Customer();
     customer.setCustomerName(e.getEmploueeName());//etc
     customers.add(cutomer);
   })
   // what i am looking for
   List<Customer> customers=Utils.getObject(empList,Customer.class);

这里是java POJO

class Employee {

 private String employeeName;

 private int age;

 private EmployeeDetails details;
 }

class EmployeeDetails {
  private String name;

  private int salary;
 }


class Customer{

 private String customerName;

 private int age;

 private CustomerDetails details;
}

class CustomerDetails {
 private String name;

 private int salary;
}

我不想使用任何第 3 部分库，如 Apache Commons，而不是从员工到客户填充列表，反之亦然。

Answer 1

您可以使用 BeanUtils :

import org.apache.commons.beanutils.BeanUtils;

Employee newObject = new Employee(); 
BeanUtils.copyProperties(newObject, oldObject);

如果寻找深层复制，则使用 SerializationUtils.clone来自 Apache Commons Lang 的方法.它复制整个类层次结构。

SerializationUtils.clone(object);