Java多线程提交按照时间顺序获取线程结果详解流程

Maven依赖

其实要不要无所谓。主要是为了方便。

      <dependency>
          <groupId>cn.hutool</groupId>
          <artifactId>hutool-all</artifactId>
          <version>5.7.15</version>
      </dependency>

代码

不废话，上代码。

package com.hy.csdn.tools;

import cn.hutool.core.thread.ThreadUtil;

import java.util.Arrays;
import java.util.List;
import java.util.concurrent.*;
import java.util.function.Consumer;

/**
* @author huyi
* @date 2021/11/1 下午2:22
*/
public class ThreadPriorityUtil {
private static final ExecutorService EXECUTOR_SERVICE = Executors.newFixedThreadPool(100);

  /**
   * 提交多个任务
   * @param tasks 任务
   * @param consumer 结果消费
   * @param <T> 泛型
   */
public static <T> void submit(List<Callable<T>> tasks, Consumer<T> consumer) {
  CompletionService<T> completionService = new ExecutorCompletionService<>(EXECUTOR_SERVICE);
  tasks.forEach(completionService::submit);
  tasks.forEach(
      x -> {
        try {
          consumer.accept(completionService.take().get());
        } catch (InterruptedException e) {
          e.printStackTrace();
        } catch (ExecutionException e) {
          e.printStackTrace();
        }
      });
}

public static void destroy() {
  System.out.println("摧毁线程池");
  EXECUTOR_SERVICE.shutdown();
}

public static void main(String[] args) {
  // 启动3个线程执行试试看
  List<Callable<Integer>> tasks =
      Arrays.asList(
          () -> {
            try {
              TimeUnit.SECONDS.sleep(30);
              System.out.println("task 30 completed");
            } catch (InterruptedException e) {
              e.printStackTrace();
            }
            return 30;
          },
          () -> {
            try {
              TimeUnit.SECONDS.sleep(10);
              System.out.println("task 10 completed");
            } catch (InterruptedException e) {
              e.printStackTrace();
            }
            return 10;
          },
          () -> {
            try {
              TimeUnit.SECONDS.sleep(20);
              System.out.println("task 20 completed");
            } catch (InterruptedException e) {
              e.printStackTrace();
            }
            return 20;
          });

  ThreadPriorityUtil.submit(tasks, x -> System.out.println("回调结果：" + x));

  ThreadUtil.sleep(40000L);
  ThreadPriorityUtil.destroy();
}
}

执行看看

Java多线程提交按照时间顺序获取线程结果详解流程