public class TestStopTread implements Runnable{
    private boolean zhiling = true;
    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName()+"线程开始");
        int i=0;
        while (zhiling){
            System.out.println(Thread.currentThread().getName()+":"+i++);
            try {
                Thread.sleep(1000);
            } catch (Exception e) {
               e.printStackTrace();
            }
        }
        System.out.println(Thread.currentThread().getName()+"线程结束");
    }
    public void stop(){
        this.zhiling=false;
    }

    public static void main(String[] args) {
        System.out.println("主线程开始");
        TestStopTread tst = new TestStopTread();
        Thread t = new Thread(tst);
        try {
            System.in.read();
        } catch (Exception e) {
           e.printStackTrace();
        }
        tst.stop();
        System.out.println("线程结束");
    }
}
问什么运行的时候不显示循环体内容

老师 这个接口好像没了 

希望能尽快解决，不然工具用不了，买的课不就白买了

Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was

14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 未知的错误"

 One of the configured repositories failed (未知),

 and yum doesn't have enough cached data to continue. At this point the only

 safe thing yum can do is fail. There are a few ways to work "fix" this:

     1. Contact the upstream for the repository and get them to fix the problem.

     2. Reconfigure the baseurl/etc. for the repository, to point to a working

        upstream. This is most often useful if you are using a newer

        distribution release than is supported by the repository (and the

        packages for the previous distribution release still work).

     3. Run the command with the repository temporarily disabled

            yum --disablerepo=<repoid> ...

     4. Disable the repository permanently, so yum won't use it by default. Yum

        will then just ignore the repository until you permanently enable it

        again or use --enablerepo for temporary usage:

            yum-config-manager --disable <repoid>

        or

            subscription-manager repos --disable=<repoid>

     5. Configure the failing repository to be skipped, if it is unavailable.

        Note that yum will try to contact the repo. when it runs most commands,

        so will have to try and fail each time (and thus. yum will be be much

        slower). If it is a very temporary problem though, this is often a nice

        compromise:

            yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true

Cannot find a valid baseurl for repo: base/7/x86_64

软连接删除掉被链接的文件名就读不到内容，但硬链接可以，但是原文件删除了，硬链接还能读到内容的话，现在占用的内存地址什么时候才能释放，是硬连接解除后还是怎么

service下面好多个 X 怎么办

apache  mysql  filezilla tomcat 前面都是x

请问为什么这里的p矩阵是正交矩阵，我查资料发现这个只有当原矩阵为实对称矩阵时，才成立

import turtle
import math

x1 , y1 = 100 , 100
x2 , y2 = 100 , -100
x3 , y3 = -100 ,- 100
x4 , y4 = -100 , 100

turtle.penup()
turtle.goto(x1,y1)
turtle.pendown()


turtle.goto(x2,y2)
turtle.goto(x3,y3)
turtle.goto(x4,y4)


distance = math.sqrt((x1-y4)**2 + (y1-y4)**2)
turtle.write(distance)
turtle.done()

老师为什么我算出来来的结果是0.0，咋跟你的不一样是不是哪里写错？

老师，向下复制一行的快捷键是什么

使用外国的登录了显示不可用怎么办呀 那是不是只能用中国的？老师

这几个接口的次数都不够了，提示次数不足怎么办？

老师，没有好使的接口了，都是次数不足怎么办？

这里用的为啥都比springcloudAlibaba麻烦多了

celery -A celery_task worker --loglevel=INFO --concurrency=3 -P eventlet 报了AttributeError: module 'collections' has no attribute 'MutableMapping' Python版本3.10，celery版本是5.2.7 我问了deepseek，

做了这样的操作# 升级核心依赖pip install -U kombu amqp vine，还报错是什么原因 都是根据老师的版本来的 celery =5.2.7 eventlet=0.33.1

按照这个一行一行运行的，没有commit事务提交，为什么关闭数据库后打开数据还是变化了

看完dubbo调用还是感觉用openfeign有点麻烦