十二月 10, 2019 5:16:42 下午 org.springframework.test.context.support.AbstractTestContextBootstrapper getDefaultTestExecutionListenerClassNames
信息: Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]
十二月 10, 2019 5:16:42 下午 org.springframework.test.context.support.AbstractTestContextBootstrapper instantiateListeners
信息: Could not instantiate TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [javax/servlet/ServletContext]
十二月 10, 2019 5:16:42 下午 org.springframework.test.context.support.AbstractTestContextBootstrapper getTestExecutionListeners
信息: Using TestExecutionListeners: [org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@1daadbf7, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@3c4f4458, org.springframework.test.context.support.DirtiesContextTestExecutionListener@78100c56, org.springframework.test.context.transaction.TransactionalTestExecutionListener@659a1fae, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@69960c9e]
十二月 10, 2019 5:16:42 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [ApplicationContext.xml]
十二月 10, 2019 5:16:42 下午 org.springframework.test.context.TestContextManager prepareTestInstance
严重: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@3c4f4458] to prepare test instance [com.yangge.test.UsersDaoImplTest@188553b2]
java.lang.IllegalStateException: Failed to load ApplicationContext
 at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
 at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
 at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
 at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
 at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:217)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:276)
 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:278)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:236)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:87)
 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
 at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
 at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
 at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 41 in XML document from class path resource [ApplicationContext.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 41; columnNumber: 102; cvc-complex-type.2.4.a: 发现了以元素 'bean' 开头的无效内容。应以 '{"http://www.springframework.org/schema/beans":description, "http://www.springframework.org/schema/beans":meta, "http://www.springframework.org/schema/beans":constructor-arg, "http://www.springframework.org/schema/beans":property, "http://www.springframework.org/schema/beans":qualifier, "http://www.springframework.org/schema/beans":lookup-method, "http://www.springframework.org/schema/beans":replaced-method, WC[##other:"http://www.springframework.org/schema/beans"]}' 之一开头。
 at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:399)
 at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336)
 at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)
 at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181)
 at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217)
 at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
 at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:252)
 at org.springframework.test.context.support.AbstractGenericContextLoader.loadBeanDefinitions(AbstractGenericContextLoader.java:253)
 at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:122)
 at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
 at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)
 at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)
 at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
 at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
 ... 25 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 41; columnNumber: 102; cvc-complex-type.2.4.a: 发现了以元素 'bean' 开头的无效内容。应以 '{"http://www.springframework.org/schema/beans":description, "http://www.springframework.org/schema/beans":meta, "http://www.springframework.org/schema/beans":constructor-arg, "http://www.springframework.org/schema/beans":property, "http://www.springframework.org/schema/beans":qualifier, "http://www.springframework.org/schema/beans":lookup-method, "http://www.springframework.org/schema/beans":replaced-method, WC[##other:"http://www.springframework.org/schema/beans"]}' 之一开头。
 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198)
 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
 at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:437)
 at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
 at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:325)
 at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:458)
 at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3237)
 at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1796)
 at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:746)
 at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:378)
 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2778)
 at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
 at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
 at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
 at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
 at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
 at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
 at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:347)
 at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:76)
 at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadDocument(XmlBeanDefinitionReader.java:429)
 at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:391)
 ... 38 more

老师这是提示路径错误吗 但是我得路径也没错啊

package com.yangge.test;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;

import com.yangge.dao.UsersDao;
import com.yangge.pojo.Users;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:ApplicationContext.xml")
public class UsersDaoImplTest {
 @Autowired
 private UsersDao usersDao;
 @Test
 @Transactional
 public void insert(){
  Users users =new Users(1,"寮犱笁",22);
  usersDao.insertUsers(users);
 }

}

在src目录下得

代码区：

/**
 * 测试递归
 * @author 一姐姐
 *
 */
public class TestDigui1 {
        public static void main(String[]args) {
        //打印实心10*10正方形
        for(int m=0;m<=10;m++);
            for(int n=0;n<=10;n++) {
                    System.out.print("*  ");
            }
            System.out.println();
        }
        System.out.println("##########################");
      //打印空心10*10正方形
        for (int p=1;p<=10;p++) {
            if(p>1&&p<10) {
                System.out.println("*                  *");
            }else {
                System.out.println("*  *  *  *  *  *  *  *  *  *");
            }
        }
}

运行结果

Exception in thread "main" java.lang.Error: Unresolved compilation problem:

    at TestDigui1.main(TestDigui1.java:8)

老师，这是哪里错啦？

老师，这为什么会请求超时啊，都设置好的的，我ping了一下一网段的pc1和二网段的pc5通不通，结果请求超时

全英文版。。。那个中文包不知道放哪去，没有那个lib文件夹

老师，我这个将程序作为广播方，将网络调试助手作为接收方，为什么网络调试助手没收到消息啊

# udp广播
import socket
addr = ('<broadcast>', 8888)
s =socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST,1)
s.sendto(b'nihao', addr)

import pygame
screen_width = 700
screen_height = 400
BG_color = pygame.Color(0, 0, 0)
Text_COLOR = pygame.Color(255, 0, 0)

class MainGame():
    window = None

    def __init__(self):
        pass

    def startGame(self):
        # 初始化显示模块
        pygame.display.init()
        # 初始化显示窗口
        MainGame.window = pygame.display.set_mode([screen_width, screen_height])
        pygame.display.set_caption("坦克大战1.0")
        while True:
            # 给窗口设置填充色
            self.getEvent()
            MainGame.window.blit(self.getTextSurface('剩余敌方坦克数量%d'%6), (10, 10))
            MainGame.window.fill(BG_color)
            pygame.display.update()

    def endGame(self):
        pass

    def getTextSurface(self, text):
# 初始化字体模块
        pygame.font.init()
        # 获取字体font对象
        pygame.font.get_fonts()

        s= pygame.font.SysFont("kaiti", 18)
        #绘制文本信息
        textSurface = s.render(text, True, Text_COLOR)
        return textSurface

    def getEvent(self):
        #获取所有事件
        eventList = pygame.event.get()
        #遍历事件
        for event in eventList:
# 判断按下的
            if event.type == pygame.QUIT:
                exit()



class Tank():
    def __init__(self):
        pass

    def move(self):
        pass

    def shot(self):
        pass

    def display(self):
        pass


# 我方坦克
class MyTank(Tank):
    def __init__(self):
        pass


class EnmeyTank(Tank):
    def __init__(self):
        pass


class Bullet():
    def __init__(self):
        pass

    def move(self):
        pass

    def displayBullet(self):
        pass


class Wall():
    def __init__(self):
        pass

    def displayWall(self):
        pass


class Explode():
    def __init__(self):
        pass

    def displayExplode(self):
        pass


class Music():
    def __init__(self):
        pass

    def playMusic(self):
        pass


if __name__ == "__main__":
    MainGame().startGame()

老师我这段代码没有报错，但是左上角却没有文本信息的显示，新surface没出来啊，帮忙看看，谢谢

public class test1 {
	public static void main(String[]args) {
		int sum01=0;
		int sum02=0;
		int i =1;
		while( i<=100) {
			i++;
			if(i%2==0) {
				sum01+=i;
			}else {
				sum02+=i;
			}
			
		}
		System.out.println("偶数和="+sum01);
		System.out.println("奇数和="+sum02);	
	}
}

为什么运算结果是偶数=2550，奇数=2600，哪边出了问题

只能访问2个商品详情，第三个就报错了，需要清空cookies才能再访问

老师，这个地方传入的新surface不应该时下面定义的方法里面的textSurface吗，是不是由于使用了return textSurface返回这个新窗口对象才能这么写，后面箭头所指向的d是啥意思，这种方法怎么感觉前面没有讲过，

没报错，已找到问题

数据库中表格goodsapp_category中编号  女装的id编号不能修改

老师，我看的别人的优秀作业，这个地方是不是应该是100呀？如果这个地方是101，那么生成的随机数就有可能是101吧？如果生成101，就不符合题目的要求了

老师，有个问题，一个端口无法同时接受多个请求，那比如双十一，全国那么多人对淘宝的端口进行数据请求，然后淘宝端口进行对每个请求进行操作，出现卡的原因或者崩溃的原因是不是服务器只能对一个人进行操作，后面的人排队

我写了个乞丐版的LinkedList，主要是实现add，remove，get方法，但是remove方法一直报异常，麻烦老师看一下问题出在了哪里，以下是源码

LinkedList类

package TestLinkedList;
public class LinkedList {
 private Node first=null;
 private Node last=null;
 private int size;
 //索引返回值
 Object node(int index) {
  Node x=first;
  for(int i=0;i<index;i++) {
      x=first;
   x=x.next;
  }return x.object;
 }
 //tostring方法 
 public String toString() {
    String result="";
    //如果链表中没有根节点，直接返回空
    if(first!=null){
        Node temp = first;
        result=temp.object.toString();
        //如果已经遍历到最后一个节点，结束
        while(temp.next!=null){
         result+=","+temp.next.object.toString();
         temp=temp.next;
        }
    }
    return "LinkedList [" +result + "]";
   }
 //add方法
 public void add(Object object) {
  Node l=last;
  Node newnode=new Node(l,object,null);
  last=newnode;
  if(l==null) {
   first=newnode;
  }else {
   l.next=newnode;
  }
  size++;
 };
 //remove方法
 public void remove(Object object) {
  Node l=last;
  Node f=first;
  
  for(int i=0;i<size;i++)
   {
   if(f.equals(object)) {
   break;}
   f=f.next;
   
  }
  if(f.prv==null&&f.next!=null) {
   f.next=first;
  }else if(f.prv!=null&&f.next==null) {
   f.prv=last;
   
  }else if(f.prv!=null&&f.next!=null) {
   f.prv.next=f.next;
   f.next.prv=f.prv;
  }
  f.object=null;
  size--;
 }
 //get方法
public Object get(int index) {
 Object d=node(index);
 return d;
  
 }
 
}

Node类

package TestLinkedList;
public class Node {
 Object object;
 Node prv;
 Node next;
public  Node(Node prv,Object object,Node next) {
 this.prv=prv;
 this.object=object;
 this.next=next;
 
}
public Node() {
 
}
}

Test测试

package TestLinkedList;
public class Test {
 public static void main(String[] args) {
 LinkedList link=new LinkedList();
 //测试add
 link.add("hi");
 link.add("word");
 //测试tostring
 System.out.println(link);
 //测试get
 System.out.println(link.get(1));
 //测试remove
 link.remove("word");
 System.out.println(link);
 }
}

运行效果

看的别人的优秀作业，这里sum1为什么要归0啊？