反射-Field-Java

import java.lang.reflect.Field;

/**
 * Created with IDEA
 * author:foreign
 * Date:2019/9/30
 * Time:10:10
 */
public class ReflectionFk {
    public static void main(String[] args) throws IllegalAccessException {
        Class clazz = PersonFk.class;
        //1 获取所有public的字段
        Field[] fields = clazz.getFields();
        for (Field field : fields) {
            System.out.println("public的字段：" + field);
        }
        try {
            //1.1 根据指定的名字获取public的字段
            Field variable = clazz.getField("desc");
            System.out.println("指定name的public字段：" + variable);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        }
        Field[] fields1 = clazz.getFields();
        for (Field field : fields1) {
            //2 获取变量的名称
            String name = field.getName();
            System.out.println("变量的名称：" + name);
            //3 获取变量的类型
            Class<?> type = field.getType();
            System.out.println("变量的类型：" + type);
            //4 获取变量的值
            PersonFk personFk = new PersonFk();
            Object o = field.get(personFk);
            System.out.println("获取变量的值：" + o);
            //4.1 设置变量的值
            field.set(personFk,o);
        }
    }
}