import java.lang.reflect.Field;

public class PathMatcher {
    public static Object match(Object context, String path) throws NoSuchFieldException, IllegalAccessException {
        if (context == null || path == null || path.isEmpty()) {
            return null;
        }

        String[] pathSegments = path.split("\\.");

        Object currentObject = context;

        for (String segment : pathSegments) {
            if (currentObject == null) {
                return null;  // Stop if any intermediate object is null
            }

            Class currentClass = currentObject.getClass();
            Field field = currentClass.getDeclaredField(segment);
            field.setAccessible(true);
            currentObject = field.get(currentObject);
        }

        return currentObject;
    }

    public static void main(String[] args) throws NoSuchFieldException, IllegalAccessException {
        // 示例对象
        A a = new A();
        a.b = new B();
        a.b.value = "Hello, World!";

        // 测试
        Object result1 = match(a, "b.value");
        Object result2 = match(a, "b.nonExistentField");

        System.out.println("Result 1: " + result1);  // Output: Result 1: Hello, World!
        System.out.println("Result 2: " + result2);  // Output: Result 2: null
    }

    static class A {
        B b;
    }

    static class B {
        String value;
    }
}

package org.example;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

public class FixThreadScheduleService {

    public FixThreadScheduleService(int threadNum, Runnable runnable) {

        // 初始化
        int actualThreadNum = Math.max(1, threadNum);
        ScheduledExecutorService scheduledExecutorService = Executors.newScheduledThreadPool(actualThreadNum);

        // 初始化固定线程，执行对应的任务。
        for(int i = 0; i  QUEUE = new ArrayBlockingQueue<>(SIZE+1);

    public synchronized boolean add(String message) {
        // 如果满了
        if(QUEUE.size() >= SIZE) {
            batchSave();
        }

        QUEUE.add(message);

        return true;
    }

    private synchronized void batchSave()  {
        System.out.println("队列已经满了，开始执行批量入库操作....");

        // 构建结果
        List textList = new ArrayList<>();
        for(String text : QUEUE) {
            textList.add(text);
        }

        System.out.println("------------------ 批量入库开始 size=" + textList.size());
        try {
            TimeUnit.SECONDS.sleep(2);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        System.out.println("------------------ 批量入库完成");

        // 清空
        QUEUE.clear();

        System.out.println("队列已经满了，完成执行批量入库操作....");
    }

}

ExecutorService executorService = Executors.newSingleThreadExecutor();
executorService.submit(new Runnable() {
    @Override
    public void run() {
        //todo
    }
});