有效沟通问答-【官方】百战程序员_IT在线教育培训机构

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!--  盒子模型组成部分
    
            1：内容区域 content
                1：默认大小，盒子大小由内容撑开
                2：手动设置，width和height属性完成对盒子大小的设计
            2：内边距Padding
                1：边框与内容之间的空白就是内边距
                2：填充值：PX值（推荐）与百分比
                3：top|bottom|right|left
            3：边框Border
            4：外边距Margin
        -->
    <!-- s实操细节
            1：宽度设置百分比生效
            2：高度设计百分比不生效，高度一般设置PX值
     -->
    <style>
        * {
            margin: 0 auto;
            padding: 0;
        }

        ul {
            list-style: none;
            height: 50px;
            line-height: 50px;
            background-color: black;
        }

        ul li {
            float: left;      
        }
        ul li a {

            color: aliceblue;
            text-decoration: none;
            /*去除超链接下划线*/
            padding: 5px;

        }
        nav{
            height: 50px;
            width: 100%;
            background-color: black;
            padding: 5px;

        }
        nav a{
            line-height: 50px;
            color: aliceblue;
            text-decoration: none;
        }
    </style>
</head>

<body>
    <nav>
        <a href="#">首页</a>
        <a href="#">手机</a>
        <a href="#">家电</a>
        <a href="#">配件</a>
        <a href="#">生活</a>
        <a href="#">服务</a>
        <a href="#">社区</a>
    </nav>
    <br>
    <ul>
        <li><a href="#">首页</a></li>
        <li><a href="#">手机</a></li>
        <li><a href="#">家电</a></li>
        <li><a href="#">配件</a></li>
        <li><a href="#">生活</a></li>
        <li><a href="#">服务</a></li>
        <li><a href="#">社区</a></li>
    </ul>


</body>

</html>

老师，能用nav标签是不是就不用费劲写ul li标签了

WEB前端全系列/第一阶段：HTML5+CSS3模块/CSS盒子模型 16895楼

老师，为什么找不到Game Util这个class呢

JAVA 全系列/第一阶段：JAVA 快速入门/飞机大战小项目训练 16896楼

老师这段一点Java和Python按钮直接消失了。

WEB前端全系列/第二阶段：JavaScript编程模块/面向对象编程 16897楼

刚毕业没有经验，靠什么才能吸引面试官，没获得什么奖励，会不会对自己的面试影响特别大？

JAVA 全系列/预科阶段：职业规划/学习方法/就业和找工作需要注意事项 16898楼

老师，视频中讲到，如果有两个维度相关性比较强的话，那不能把他们都放进线性回归的模型当中，这是为什么？

Python 全系列/第二十一阶段：Python_数据分析项目（旧）/银行客户流失分析 16899楼

老师好，我想请问一下这是linkedlist添加元素时的源码，第一次添加时，last为null，l也指向last为null，然后last指向了newNode对象，l不应该也指向了newNode对象，此时不为null了吗？因为l=last不是对象引用的传递么，不是应该同时改变么。

JAVA 全系列/第二阶段：JAVA 基础深化和提高/容器（旧） 16900楼

就是补充，我不知道怎么回复问题。

现在就是我运行，并不能返回html的网页信息，我发现里面有两个debug，我解决了一个，还剩一个

我想应该是

这个debug到导致的问题。

Python 全系列/第十五阶段：Python 爬虫开发/移动端爬虫开发- 16901楼

Python 全系列/第二阶段：Python 深入与提高/游戏开发-坦克大战 16902楼

老师，出现了如下报错是什么原因呢？我的HTML中已经添加了

<link rel="shortcut icon" href="../resources/favicon.ico" th:href="@{/static/favicon.ico}"/>

麻烦老师看看

org.thymeleaf.exceptions.TemplateInputException: Error resolving template [favicon.ico], template might not exist or might not be accessible by any of the configured Template Resolvers

at org.thymeleaf.engine.TemplateManager.resolveTemplate(TemplateManager.java:869) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:607) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) [thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) [thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:362) [thymeleaf-spring5-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:189) [thymeleaf-spring5-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1373) [spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1118) [spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1057) [spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) [spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) [spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) [spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) [spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) [tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.35.jar:9.0.35]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_101]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_101]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.35.jar:9.0.35]

at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]

2020-05-29 17:55:41.827 ERROR 42664 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: Error resolving template [favicon.ico], template might not exist or might not be accessible by any of the configured Template Resolvers] with root cause

org.thymeleaf.exceptions.TemplateInputException: Error resolving template [favicon.ico], template might not exist or might not be accessible by any of the configured Template Resolvers

at org.thymeleaf.engine.TemplateManager.resolveTemplate(TemplateManager.java:869) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:607) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:362) ~[thymeleaf-spring5-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:189) ~[thymeleaf-spring5-3.0.11.RELEASE.jar:3.0.11.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1373) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1118) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1057) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) ~[tomcat-embed-core-9.0.35.jar:9.0.35]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.35.jar:9.0.35]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.35.jar:9.0.35]