如何使用BeanUtils.copyProperties进行对象之间的属性赋值

这篇文章主要介绍了使用BeanUtils.copyProperties进行对象之间的属性赋值，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧

1、使用org.springframework.beans.BeanUtils.copyProperties方法进行对象之间属性的赋值，避免通过get、set方法一个一个属性的赋值

 /** * 对象属性拷贝 
 * 将源对象的属性拷贝到目标对象 * * @param source 源对象 * @param target 目标对象 */ public static void copyProperties(Object source, Object target) { try { BeanUtils.copyProperties(source, target); } catch (BeansException e) { LOGGER.error("BeanUtil property copy failed :BeansException", e); } catch (Exception e) { LOGGER.error("BeanUtil property copy failed:Exception", e); } }

2、List集合之间的对象属性赋值

 /** * @param input 输入集合 * @param clzz 输出集合类型 * @param  输入集合类型 * @param  输出集合类型 * @return 返回集合 */ public static  List convertList2List(List input, Class clzz) { List output = Lists.newArrayList(); if (CollectionUtils.isNotEmpty(input)) { for (E source : input) { T target = BeanUtils.instantiate(clzz); BeanUtil.copyProperties(source, target); output.add(target); } } return output; }

比如有两个类，User和Employee，将存储Employee对象的List赋给存储User对象的List。

User类：

 public class User { private String name; private Integer age; public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } @Override public String toString() { return "User{" + "name='" + name + '\'' + ", age=" + age + '}'; } }

Employee类：

 public class Employee { private String name; private Integer age; private String dept; public Employee(String name, Integer age, String dept) { this.name = name; this.age = age; this.dept = dept; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public String getDept() { return dept; } public void setDept(String dept) { this.dept = dept; } @Override public String toString() { return "Employee{" + "name='" + name + '\'' + ", age=" + age + ", dept='" + dept + '\'' + '}'; } }

测试类：

 @RunWith(PowerMockRunner.class) public class TestUtil { @Test public void test(){ Employee ee1=new Employee("A",21,"it"); Employee ee2=new Employee("B",23,"account"); User user=new User(); BeanUtil.copyProperties(ee1, user); System.out.println(user); System.out.println("-------------分割线--------------"); List output=new ArrayList<>(); List source= Arrays.asList(ee1,ee2); output=BeanUtil.convertList2List(source,User.class); for (User str:output) { System.out.println(str); } } }