初衷：

　　　　db返回了一個實體類，想封裝成一個Map留著按需獲取屬性，所以就有了下面的Utils

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;

/**
 * @program: ht
 * @description: 實體類存入Map
 * @author: Wangly
 * @create: 2020-12-29 13:29
 * @version: 1.0.0
 */
public class BeanMap {
    /**
     * 獲取obj中的所有方法
     * 
     * @param obj
     * @return
     */
    public List<Method> getAllMethods(Object obj) {
        List<Method> methods = new ArrayList<Method>();
　　　　　// 獲取obj位元組碼
        Class<?> clazz = obj.getClass();
        while (!clazz.getName().equals("java.lang.Object")) 
　　　　　　{
　　　　　　　// 獲取方法
            methods.addAll(Arrays.asList(clazz.getDeclaredMethods()));
            clazz = clazz.getSuperclass();
        }
        return methods;
    }

    /**
     * 將一個類用屬性名為Key，值為Value的方式存入map
     * 
     * @param obj
     * @return
     */
    public Map<String, Object> convert2Map(Object obj) {
        Map<String, Object> map = new HashMap<String, Object>();
        List<Method> methods = getAllMethods(obj);
        for (Method m : methods) {
            String methodName = m.getName();
            if (methodName.startsWith("get")) {
                // 獲取屬性名
                String propertyName = methodName.substring(3);
                try {
                    map.put(propertyName, m.invoke(obj));
                } catch (IllegalArgumentException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (InvocationTargetException e) {
                    e.printStackTrace();
                }
            }
        }
        return map;
    }
}

　　Test

　　測試實體類

import lombok.Data;

/**
 * @program: ht
 * @description: TestBeanMap
 * @author: Wangly
 * @create: 2020-12-29 13:37
 * @version: 1.0.0
 */
@Data
public class Person {
    private int id;
    private String name;
    private String nipples;
    private String sw;
    private String bra;
    private String foot;
    private String mouth;

    public Person() {}

    public Person(int id, String name, String nipples, String sw, String bra, String foot, String mouth) {
        this.id = id;
        this.name = name;
        this.nipples = nipples;
        this.sw = sw;
        this.bra = bra;
        this.foot = foot;
        this.mouth = mouth;
    }
}

　　測試類

@Test
    public void BeanMapTest() {
        BeanMap beanMap = new BeanMap();
        Person p = new Person();
        p.setId(1);
        p.setBra("pink");
        p.setMouth("good");
        p.setNipples("pink");
        p.setSw("black");
        p.setFoot("good");

        Map<String, Object> stringObjectMap = beanMap.convert2Map(p);
        stringObjectMap.forEach((k, v) -> {
            System.out.println("k:" + k + ",v:" + v);
        });
    }

　　輸出