java.lang.IllegalStateException: zookeeper not connected

at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.<init>(CuratorZookeeperClient.java:83) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperTransporter.createZookeeperClient(CuratorZookeeperTransporter.java:26) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

at org.apache.dubbo.remoting.zookeeper.support.AbstractZookeeperTransporter.connect(AbstractZookeeperTransporter.java:70) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

at org.apache.dubbo.remoting.zookeeper.ZookeeperTransporter$Adaptive.connect(ZookeeperTransporter$Adaptive.java) ~[dubbo-common-2.7.6.jar:2.7.6]

at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfiguration.<init>(ZookeeperDynamicConfiguration.java:70) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfigurationFactory.createDynamicConfiguration(ZookeeperDynamicConfigurationFactory.java:37) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.lambda$getDynamicConfiguration$0(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-common-2.7.6.jar:2.7.6]

at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705) ~[na:na]

at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.getDynamicConfiguration(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-common-2.7.6.jar:2.7.6]

at org.apache.dubbo.common.config.configcenter.DynamicConfiguration.getDynamicConfiguration(DynamicConfiguration.java:223) ~[dubbo-common-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.prepareEnvironment(DubboBootstrap.java:857) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.startConfigCenter(DubboBootstrap.java:603) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.useRegistryAsConfigCenterIfNecessary(DubboBootstrap.java:671) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.initialize(DubboBootstrap.java:509) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.start(DubboBootstrap.java:740) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onContextRefreshedEvent(DubboBootstrapApplicationListener.java:59) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onApplicationContextEvent(DubboBootstrapApplicationListener.java:52) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.spring.context.OneTimeExecutionApplicationContextEventListener.onApplicationEvent(OneTimeExecutionApplicationContextEventListener.java:40) ~[dubbo-2.7.6.jar:2.7.6]

at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:897) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at com.bjsxt.provider.ProviderApplication.main(ProviderApplication.java:11) ~[classes/:na]

Caused by: java.lang.IllegalStateException: zookeeper not connected

at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.<init>(CuratorZookeeperClient.java:80) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

... 30 common frames omitted

为什么一直连不上？？？？？？？？ 这个报错什么意思？

java.lang.IllegalStateException: zookeeper not connected

at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.<init>(CuratorZookeeperClient.java:83) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperTransporter.createZookeeperClient(CuratorZookeeperTransporter.java:26) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

at org.apache.dubbo.remoting.zookeeper.support.AbstractZookeeperTransporter.connect(AbstractZookeeperTransporter.java:70) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

at org.apache.dubbo.remoting.zookeeper.ZookeeperTransporter$Adaptive.connect(ZookeeperTransporter$Adaptive.java) ~[dubbo-common-2.7.6.jar:2.7.6]

at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfiguration.<init>(ZookeeperDynamicConfiguration.java:70) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfigurationFactory.createDynamicConfiguration(ZookeeperDynamicConfigurationFactory.java:37) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.lambda$getDynamicConfiguration$0(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-common-2.7.6.jar:2.7.6]

at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705) ~[na:na]

at org.apache.dubbo.common.config.configcenter.AbstractDynamicConfigurationFactory.getDynamicConfiguration(AbstractDynamicConfigurationFactory.java:39) ~[dubbo-common-2.7.6.jar:2.7.6]

at org.apache.dubbo.common.config.configcenter.DynamicConfiguration.getDynamicConfiguration(DynamicConfiguration.java:223) ~[dubbo-common-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.prepareEnvironment(DubboBootstrap.java:857) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.startConfigCenter(DubboBootstrap.java:603) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.useRegistryAsConfigCenterIfNecessary(DubboBootstrap.java:671) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.initialize(DubboBootstrap.java:509) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.bootstrap.DubboBootstrap.start(DubboBootstrap.java:740) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onContextRefreshedEvent(DubboBootstrapApplicationListener.java:59) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onApplicationContextEvent(DubboBootstrapApplicationListener.java:52) ~[dubbo-2.7.6.jar:2.7.6]

at org.apache.dubbo.config.spring.context.OneTimeExecutionApplicationContextEventListener.onApplicationEvent(OneTimeExecutionApplicationContextEventListener.java:40) ~[dubbo-2.7.6.jar:2.7.6]

at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:897) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]

at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]

at com.bjsxt.provider.ProviderApplication.main(ProviderApplication.java:11) ~[classes/:na]

Caused by: java.lang.IllegalStateException: zookeeper not connected

at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.<init>(CuratorZookeeperClient.java:80) ~[dubbo-remoting-zookeeper-2.7.6.jar:2.7.6]

... 30 common frames omitted

为什么一直连不上？？？？？？？？ 这个报错什么意思？

老师，为什么没有dao包了呢，现在访问持久层的代码是放在哪个包的呢

老师我想获取对面的IP地址和端口号，怎么修改，直接把元组0改成1不行吗？

from socket import *

s=socket(AF_INET,SOCK_DGRAM)
addr=('192.168.43.205',8083)
date=input('请输入发送的内容：')
s.sendto(date.encode('gb2312'),addr)
redata=s.recvfrom(2048)
print(redata[1].decode('gb2312'))
s.close()

老师，我记得在讲IO的时候也用过相对路径啊，比如"img/1.jpg"或者"./img/2.jpg"。这种都可以以项目目录为根目录来取到对应的文件，不需要转换，为什么在servlet里就不行呢？我自己的猜想是servlet也是java，需要jvm来运行，但在servlet中jvm并不运行在项目目录，所以找不到文件。请问老师servlet运行时以哪个路径为根目录呢？

老师，这里不太懂，请问这里的参数是存在什么地方的呢

老师，我的后面为什么会出现这个错误呢？大小写都试过了

老师，画红线的地方视频里老师说是高阶函数。是什么意思？

老师，zookeeper的通知机制和具体的一个原理之类的并没有讲，课程只是讲了基础的操作会不会有点空？

老师，显示不支持POST请求，这是怎么回事？

还有59 60 这两节啊  不是只有一节黑屏       

pygametimerandom
SCREEN_WIDTH = SCREEN_HEIGHT = BG_COLOR=pygame.Color(())
TEXT_COLOR=pygame.Color()

MainGame():
    window=my_tank = enemyTankList=[]
    enemyTankCount=():
        ():
        pygame.display.init()
        MainGame.window=pygame.display.set_mode([SCREEN_WIDTHSCREEN_HEIGHT])
        MainGame.my_tank=Tank()
        .createEnemyTank()

        pygame.display.set_caption()
        :
            time.sleep()
            MainGame.window.fill(BG_COLOR)
            .getEvent()
            MainGame.window.blit(.getTextSurface(%(MainGame.enemyTankList))())
            MainGame.my_tank.displayTank()
            .blitEnemyTank()
            MainGame.my_tank.stop:
                MainGame.my_tank.move()
            pygame.display.update()

    ():
        top=i (MainGame.enemyTankCount):
            left = random.randint()
            speed = random.randint()
            enemy = EnemyTank(lefttopspeed)
            MainGame.enemyTankList.append(enemy)

    ():
        enemyTank MainGame.enemyTankList:
            enemyTank.displayTank()
            enemyTank.move()

    ():
        ()
        ()
    (text):
        pygame.font.init()
        font=pygame.font.SysFont()
        textSurface=font.render(textTEXT_COLOR)
        textSurface

        ():
        eventList = pygame.event.get()
        event eventList:
            event.type == pygame.QUIT:
                .endGame()
            event.type == pygame.KEYDOWN:
                event.key == pygame.K_LEFT:
                    MainGame.my_tank.direction = MainGame.my_tank.stop=()
                event.key == pygame.K_RIGHT:
                    MainGame.my_tank.direction = MainGame.my_tank.stop = ()
                event.key == pygame.K_UP:
                    MainGame.my_tank.direction = MainGame.my_tank.stop = ()
                event.key == pygame.K_DOWN:
                    MainGame.my_tank.direction = MainGame.my_tank.stop = ()
                event.key==pygame.K_SPACE:
                    ()


            event.type == pygame.KEYUP:
                event.key==pygame.K_UP event.key==pygame.K_LEFT event.key==pygame.K_RIGHT event.key==pygame.K_DOWN:
                    MainGame.my_tank.stop=Tank():
    (lefttop):
        .images={
            :pygame.image.load():pygame.image.load():pygame.image.load():pygame.image.load()}
        .direction=.image =.images[.direction]
        .rect=.image.get_rect()
        .rect.left = left
        .rect.top = top
        .speed=.stop=():
        .direction == :
            .rect.left>:
                .rect.left -= .speed
        .direction == :
            .rect.top>:
                .rect.top -= .speed
        .direction == :
            .rect.top+.rect.height<SCREEN_HEIGHT:
                .rect.top += .speed
        .direction == :
            .rect.left+.rect.height<SCREEN_WIDTH:
                .rect.left += .speed


    ():
        ():
        .image=.images[.direction]
        MainGame.window.blit(.image.rect)

MyTank(Tank):
    ():
        EnemyTank(Tank):
    (lefttopspeed):
        .imges={
            : pygame.image.load(): pygame.image.load(): pygame.image.load(): pygame.image.load()}
        .direction=.randDirection()
        .image=.images[.direction]
        .rect=.image.get_rect()
        .rect.left=left
        .rect.top=top
        .speed=speed
        .flag=():
        num=random.randint()
        num == :
            num == :
            num == :
            num == :
            Bullet():
    ():
        ():
        ():
        Wall():
    ():
        ():
        Explode():
    ():
        ():
        Music():
    ():
        ():
        __name__==:
    MainGame().startGame()

报错了

老师我找不到我的Users表在哪里呢，是我登陆的账号错了吗？

老师，对于jinja2的理解.

可以通过不同的URL地址来构建不同的函数，通过跳转模块来进行html的呈现,此时html的数据是固定的,jinja2模块可以获取到不同的参数对html进行修饰，最后返回到客户端浏览器上进行渲染。

老师show member在哪儿可以找到？