Java反射获取对象属性的值

1、创建一个PersonBean实体类

public class PersonBean {

    private String name;
    private String address;
    private int  age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    @Override
    public String toString() {
        return "PersonBean{" +
                "name='" + name + '\'' +
                ", address='" + address + '\'' +
                ", age=" + age +
                '}';
    }
}

2、通过反射获取对象的属性值

    public static void main(String[] args) {
       PersonBean  personBean = new PersonBean();
       personBean.setAddress("HeNan Province XinXian area");
       personBean.setAge(26);
       personBean.setName("ChenYingYing");

        Field[] declaredFields = personBean.getClass().getDeclaredFields();
        for (Field declaredField : declaredFields) {
            try {
                declaredField.setAccessible(true);
                Object fieldValue = declaredField.get(personBean);
                System.out.println(declaredField.getName()+"===>"+fieldValue);
            } catch (Exception e) {
                e.fillInStackTrace();
            }
        }
    }

运行结果