在对象上按名称设置字段

//package com.nowjava;// 来自 时代Java

import java.lang.reflect.Field;


public class Main {


    public static void setField(String name, Object target, Object value) {

        try {

            Class<?> targetClass = target.getClass();

            Field field = targetClass.getDeclaredField(name);

            boolean unlocked = false;

            if (!field.isAccessible()) {

                field.setAccessible(true);

                unlocked = true;

            }

            field.set(target, value);

            if (unlocked) {

                field.setAccessible(false);

            }

        } catch (