apache的BeanUtils

<!-- BeanUtils的依赖 -->
<dependency>
    <groupId>commons-beanutils</groupId>
    <artifactId>commons-beanutils</artifactId>
    <version>1.9.4</version>
</dependency>

设置和读取属性

//设置属性
Map<String, Object> map = new HashMap<>();
BeanUtils.setProperty(map, "name", "张三");
//读取属性
String name = BeanUtils.getProperty(map, "name");
System.out.println("name=" + name);

复制对象的所有属性

Student s1 = new Student();
s1.setAge(1);
s1.setName("张三");
Student s2 = new Student();
BeanUtils.copyProperties(s2, s1);
System.out.println(s2.getName() + ":" + s2.getAge());
//输出：张三:1

克隆对象（浅克隆）

Student s1 = new Student();
s1.setAge(1);
s1.setName("张三");
Student s2 = (Student) BeanUtils.cloneBean(s1);
System.out.println(s2.getName() + ":" + s2.getAge());
//输出：张三:1

将map数据拷贝到对象中

Map<String, Object> map = new HashMap<>();
map.put("name", "张三");
map.put("age", "1");
Student s = new Student();
BeanUtils.populate(s, map);
System.out.println(s.getName() + ":" + s.getAge());
//输出：张三:1