在Java类中，我们可以使用反射中的getDeclaredFields()或者getFields()方法来获取属性和值。

比如测试类：

public class Test {
    public int id;
    public String name;
获取类的属性和值
public class Application {
    public static void main(String[] args) throws Exception {
        Test test = new Test();
        test.id = 1;
        test.name = "guoke";
        // 遍历输出属性
        Field[] fields =  test.getClass().getDeclaredFields();
        for( int i = 0; i < fields.length; i++){
            Field f = fields[i];
            System.out.println("属性名："+f.getName()+",属性值："+f.get(test));
设置类的属性值，比如做一个类成员属性深拷贝
public class Test {
    public int id;
    public String name;
    public void copy(Test obj){
        try {
            Field[] fields =  obj.getClass().getDeclaredFields();
            for( int i = 0; i < fields.length; i++){
                Field f = fields[i];
                f.set(this, f.get(obj));
        } catch (Exception e) {
            Log.error(e);
public class Application {
    public static void main(String[] args) throws Exception {
        Test test = new Test();
        test.id = 1;
        test.name = "guoke";