基础巩固 反射（一）

publicclass Reflect {

publicstaticvoid main(String[] args) throws IntrospectionException, IllegalAccessException, IllegalArgumentException, InvocationTargetException{

Person person = new Person("cristal",22);

Class clazz = person.getClass();

Field[] fields = clazz.getDeclaredFields();

for(Field field : fields){

String key = field.getName();

PropertyDescriptor descriptor = new PropertyDescriptor(key,clazz);

Method method = descriptor.getReadMethod();

Object value = method.invoke(person);

System.out.println(key +":"+value);

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}

}

 

}

class Person implements Serializable{

privatestaticfinallongserialVersionUID = -3273783136645942309L;//添加序列化会报错

private String name;

privateintage;

public Person(String name, inti) {

this.name = name;

this.age = i;

}

public String getName() {

returnname;

}

publicvoid setName(String name) {

this.name = name;

}

publicint getAge() {

returnage;

}

publicvoid setAge(intage) {

this.age = age;

}

 

}