获取具有字符串名称的对象的属性

public class ReflectExample {
    public static void main(String[] args) throws Exception {
        // 创建一个对象
        Person person = new Person("John", 25);

        // 获取对象的Class对象
        Class<?> clazz = person.getClass();

        // 获取属性的值
        Field nameField = clazz.getDeclaredField("name");
        nameField.setAccessible(true);
        Object nameValue = nameField.get(person);
        System.out.println("Name: " + nameValue);

        Field ageField = clazz.getDeclaredField("age");
        ageField.setAccessible(true);
        Object ageValue = ageField.get(person);
        System.out.println("Age: " + ageValue);

        // 修改属性的值
        nameField.set(person, "Tom");
        ageField.set(person, 30);

        // 输出修改后的属性值
        System.out.println("Modified Name: " + person.getName());
        System.out.println("Modified Age: " + person.getAge());
    }
}

class Person {
    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }
}