并发测试类

package controller;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class Mytest {
    public static void main(String[] args) {
        ExecutorService service = Executors.newCachedThreadPool(); //创建一个线程池
        final CountDownLatch cdOrder = new CountDownLatch(1);//指挥官的命令，设置为1，指挥官一下达命令，则cutDown,变为0，战士们执行任务
        final CountDownLatch cdAnswer = new CountDownLatch(1000);//因为有三个战士，所以初始值为3，每一个战士执行任务完毕则cutDown一次，当三个都执行完毕，变为0，则指挥官停止等待。
        for (int i = 0; i < 1000; i++) {
            Runnable runnable = new Runnable() {
                public void run() {
                    try {
                       HttpRequestUtil.sendGet("http://192.168.2.162:8087/send", "");
                    } catch (Exception e) {

                    } finally {
                        cdAnswer.countDown();
                    }
                }
            };
            service.execute(runnable);//为线程池添加任务
        }
        try {
            cdOrder.countDown(); //发送命令，cdOrder减1，处于等待的战士们停止等待转去执行任务。
            cdAnswer.await(); //命令发送后指挥官处于等待状态，一旦cdAnswer为0时停止等待继续往下执行
            System.out.println("线程" + Thread.currentThread().getName() +
                    "已收到所有响应结果");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
        }
        service.shutdown(); //任务结束，停止线程池的所有线程
    }
}