有效沟通问答-【官方】百战程序员_IT在线教育培训机构

严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of autowired dependencies failed;
nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.bjsxt.dubbo.service.AddUserDubboService com.bjsxt.service.impl.UserServiceImpl.addUserDubboService;
nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'addUserDubboService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException:
Failed to check the status of the service com.bjsxt.dubbo.service.AddUserDubboService. No provider available for the service com.bjsxt.dubbo.service.AddUserDubboService from the url zookeeper://192.168.243.128:2181/com.alibaba.dubbo.registry.RegistryService?anyhost=true&application=myconsumer1111&check=false&dubbo=2.5.4&generic=false&interface=com.bjsxt.dubbo.service.AddUserDubboService&methods=addUser&pid=792&revision=0.0.1-SNAPSHOT&side=consumer&timeout=300000&timestamp=1565435252238 to the consumer 192.168.243.1 use dubbo version 2.5.4

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.bjsxt.dubbo.service.AddUserDubboService com.bjsxt.service.impl.UserServiceImpl.addUserDubboService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'addUserDubboService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Failed to check the status of the service com.bjsxt.dubbo.service.AddUserDubboService. No provider available for the service com.bjsxt.dubbo.service.AddUserDubboService from the url zookeeper://192.168.243.128:2181/com.alibaba.dubbo.registry.RegistryService?anyhost=true&application=myconsumer1111&check=false&dubbo=2.5.4&generic=false&interface=com.bjsxt.dubbo.service.AddUserDubboService&methods=addUser&pid=792&revision=0.0.1-SNAPSHOT&side=consumer&timeout=300000&timestamp=1565435252238 to the consumer 192.168.243.1 use dubbo version 2.5.4
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'addUserDubboService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Failed to check the status of the service com.bjsxt.dubbo.service.AddUserDubboService. No provider available for the service com.bjsxt.dubbo.service.AddUserDubboService from the url zookeeper://192.168.243.128:2181/com.alibaba.dubbo.registry.RegistryService?anyhost=true&application=myconsumer1111&check=false&dubbo=2.5.4&generic=false&interface=com.bjsxt.dubbo.service.AddUserDubboService&methods=addUser&pid=792&revision=0.0.1-SNAPSHOT&side=consumer&timeout=300000&timestamp=1565435252238 to the consumer 192.168.243.1 use dubbo version 2.5.4
Caused by: java.lang.IllegalStateException: Failed to check the status of the service com.bjsxt.dubbo.service.AddUserDubboService. No provider available for the service com.bjsxt.dubbo.service.AddUserDubboService from the url zookeeper://192.168.243.128:2181/com.alibaba.dubbo.registry.RegistryService?anyhost=true&application=myconsumer1111&check=false&dubbo=2.5.4&generic=false&interface=com.bjsxt.dubbo.service.AddUserDubboService&methods=addUser&pid=792&revision=0.0.1-SNAPSHOT&side=consumer&timeout=300000&timestamp=1565435252238 to the consumer 192.168.243.1 use dubbo version 2.5.4

JAVA 全系列/（旧的隐藏）第七阶段：JAVA 高级技术/Dubbo 24619楼

我用视频里的t就能解密，但拿源代码的t就不行了，这是为什么

Python 全系列/第十五阶段：Python 爬虫开发/爬虫反反爬 24620楼

为什么我这两个不能一块打出呢

public class TestOperater{

public static void main(String[] args){

int a = 50;

long b = 12;

long c = a+b;

System.out.println(c);

double d=5.12;

int d2=65/3;

double d3 = d/4;

int e=85%6;

System.out.println(d2);

System.out.println(d3);

System.out.println(e);

int g = 12;

g++;

System.out.println(g);

int f = 32;

f--;

g = 6;

int h = g++;

int i = g--;

System.out.println(h,i);

JAVA 全系列/第一阶段：JAVA 快速入门/变量、数据类型、运算符 24621楼

public Vehicle getvehicle(){

return null;

}老师

这个方法是构造方法吗，如果是为什么与类名不同，如果不是为什么没有返回值类型而且Vehicle首字母大写

JAVA 全系列/第一阶段：JAVA 快速入门/面向对象详解和JVM底层内存分析 24622楼

老师，在head 标签中的meta标签是这样写的吗？
<head>
    <meta><meta>
</head>

还是 
<head>
        <meta></meta>


</head>

Python 全系列/第七阶段：网页编程基础/HTML5 24623楼

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '= balance + 500 where accountname = 'lisi'' at line 1

老师我运行完变成这样了

JAVA 全系列/第三阶段：数据库编程/JDBC技术（旧） 24624楼

b = list(x*2 for x in range(6) )
print(b)
[0, 2, 4, 6, 8, 10]

c = [x*2 for x in range(6) if x%2 ==0]
print(c)
[0, 4, 8]

老师，我看了其他问答，还是不太理解c的值为什么没有2/6/10 这些都是2的倍数，x%2余数都是0吧？

Python 全系列/第一阶段：Python入门/序列 24625楼

老师为啥我这个运行后的文件是这个样的

Python 全系列/第二阶段：Python 深入与提高/文件处理 24626楼

老师，为什么我用迭代器读取文件时多加了一行，打印的文件内容就只有个别行了呢？代码是这样的

with open（'2009.txt','r',encoding = 'utf-8'）as f:
    for a in f:
        a = f.readline()#####多加的那一行
        print(a,end = '')

Python 全系列/第二阶段：Python 深入与提高/文件处理 24627楼

from tkinter import *


class Application(Frame):
    def __init__(self,master=None):
        super().__init__(master)
        self.master = master
        self.pack()

        self.createWight()

    def createWight(self):
        btnTEXT = (("MC", "M+", "M-", "MR"),
                   ("C", "±", "/", "*"),
                   (7,8,9,"-"),
                   (4,5,6,"+"),
                   (0,1,2,"="),
                   (0,"."))
        Entry(self).grid(row=0,column=0, columnspan=4,pady=10)
        for rindex,r in enumerate(btnTEXT):
            for cindex,c in enumerate(r):
                if c == "=":
                    Button(self,text=c,width=2).grid(row=1+rindex,column=cindex, rowspan=2,sticky=NSEW)
                elif c == "0":
                    Button(self,text=c,width=2).grid(row=1+rindex,column=cindex, columnspan=2, sticky=NSEW)
                elif c == ".":
                    Button(self,text=c,width=2).grid(row=1+rindex,column=cindex+1, sticky=NSEW)
                else:
                    Button(self,text=c,width=2).grid(row=1+rindex,column=cindex,sticky=NSEW)



if __name__ == '__main__':
    root = Tk()
    root.title("计算器")
    root.geometry("300x300+200+300")
    app = Application(master=root)
    root.mainloop()

老师，和您的一样，0为啥没有跨列

Python 全系列/第二阶段：Python 深入与提高/GUI编程（隐藏） 24628楼

老师，我想搭建mysql的高可用集群，包括keepalived，视频的mysql是单机的，请问mysql高可用集群怎么搭建？请不要随便到网上粘贴个答案回答我，最好能出一期视频作讲解，还有就是项目介绍的时候说是Nginx也是高可用的，但是看完发现好像Nginx现在也不是

JAVA 全系列/第二十三阶段：容器管理技术/Docker 24629楼

老师麻烦看下这是什么问题，我百度了半天，也没解决好

JAVA 全系列/（旧的隐藏）第十一阶段：spring全家桶（Spring Boot）/Spring Boot 24630楼

同学您好