黄小斜 · 2020年03月17日

五分钟学Java:如何学习Java面试必考的JVM虚拟机

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JVM虚拟机

为什么要学习JVM虚拟机

最近的你有没有参加Java面试呢?你有没有发现,Java面试中总是爱考一类问题,那就是JVM虚拟机,为什么面试官这么爱考察JVM的问题呢,这是因为,所有的Java程序本质上都是运行在JVM之上的,没有JVM虚拟机,也就没有Java语言的执行环境,只有掌握了JVM虚拟机的相关知识,你才能说你懂Java,否则就像一个只会玩手机的人说自己压根不懂安卓操作系统一样。

根据百度百科的介绍,JVM是Java Virtual Machine(Java虚拟机)的缩写,JVM是一种用于计算设备的规范,它是一个虚构出来的计算机,是通过在实际的计算机上仿真模拟各种计算机功能来实现的。引入Java语言虚拟机后,Java语言在不同平台上运行时不需要重新编译。Java语言使用Java虚拟机屏蔽了与具体平台相关的信息,使得Java语言编译程序只需生成在Java虚拟机上运行的目标代码(字节码),就可以在多种平台上不加修改地运行。

就是因为有JVM的存在,Java才能够拥有跨平台运行的能力,一次编译,到处运行,反观C++这类语言,需要到处编译才能运行,因为它本身是和操作系统强关联的一门语言,也没有虚拟机的概念。

当然,因为有了JVM虚拟机的存在,Java语言的复杂度也大大降低,其所付出的代价就是运行速度有所下降,离开JVM虚拟机谈Java是没有意义的,学好JVM是学好一切Java技术的前提。

如何学习JVM虚拟机

JVM虚拟机就在我们的身边

第一次听说JVM虚拟机这个东西,还是在一道面试题中,那时候我完全不知道这是个啥玩意啊,后来我买了一本号称JVM圣经的书《深入理解JVM虚拟机》才有幸知道,原来JVM虚拟机就运行在我们的电脑中。

作为一个Java开发者,入门三件套可能就是IDE、JDK和JRE了,其实JDK就包含了JRE,而JRE(Java运行环境)也就包含了JVM虚拟机。当我们使用javac或者使用ide进行Java程序的编译或者执行时,其实就是把java代码变异成class字节码,然后扔到JVM执行。

此时我们的任务管理器里会有一个进程叫做java,这个进程就可以理解为JVM程序,而这个进程里还有很多子线程,分别负责执行代码,垃圾回收等等。

很多时候我们压根不知道JVM虚拟机是个啥,自然也不能很好地学习它,一旦我们了解了它的本质,后面的东西学习起来也就不会那么痛苦了。

初探JVM面试题

有很多程序员第一次听说JVM可能是在面试的时候,关于JVM的面试题其实也不少,这里举例一些比较热门的面试题型,比如“JVM的堆和栈有什么区别”、“JVM的垃圾回收算法有哪些”、“JVM的内存模型是什么样的”等等,这类题目算是比较基础的了。

这类题目,一般通过刷刷面经,也能够回答上来一些,毕竟面试官懂得也不一定比你多,所以一些面试官可能也不会深挖下去。不过如果是一些对技术考察得比较有深度的公司就不一定了,很多以Java技术栈为主的公司,特别是电商类公司,对于JVM的考察还是比较有深度的,除了阿里和美团,还有京东、唯品会、有赞、拼多多等公司。

所以,我们不妨也来看看进阶版的JVM面试题长什么样。首先,进阶版的题目主要考察深度,像是JVM的内存模型,一定会让你讲清楚每个区域是做什么的,并且会让实际的场景来问你,比如字符串变量放在哪个区域,类的元数据放在哪个区域,局部变量和全局变量又分别放在哪个区域。如果你对内存模型只是一知半解,一下子就会被面试官给识破了。

进阶版的JVM面试还喜欢考察细节,比如JVM的垃圾回收算法,停止复制,标记清除,需要你把过程讲清楚,各自的优劣讲清楚。如果这类问题对你也够不成威胁,那不妨再看看JVM垃圾回收的其他题型,“年轻代的GC是如何进行的,请讲解详细过程”很多面试者可能会简单地讲一下年轻代的回收方法。

你可能会简单地回答:“使用停止复制的方法来完成的”实际上,其实,这里面能讲的细节有很多,首先,年轻代分为eden区和survivor区,survivor区还分为from和to区,eden区存活的对象会被放到from区,而在下一次young gc后,from区和to区会交换位置,对象也会跟着搬移,从而该对象的年龄加一,当对象的年龄超过阈值时,对象就会进入老年代。

看似简单的问题居然可以答出这么多门道,这也是我在经历很多次面试之后才总结出来的经验。

JVM圣经《深入理解JVM虚拟机》

Java书籍千千万,但是真正能够讲清楚JVM虚拟机的书可能也只有这一本了。网上的大部分关于JVM的博客基本都是借鉴或者是参考本书的内容。

那么这本书到底讲了哪些些JVM的内容了,不妨和我一起来拆解一下。

第一部分,这本书讲了Java这门语言的历史,以及它为什么要运行在JVM上,这一点很重要,要不然开发者也会很奇怪,为什么好好的编程语言要运行在虚拟机上呢。

第二部分,本书开始介绍JVM的核心概念,那就是内存模型,JVM是如何管理计算机的内存的,又是如何划分这些区域的,毕竟Java里的类型和变量那么多,确实不好管理。

第三部分,是这本书比较难的一部分,它开始介绍Java代码的运行原理,那就是要先把java代码编译成字节码,然后才能在JVM上执行,而Java代码又是由一个个类组成的,所以文章要介绍JVM虚拟机是如何加载这些类的,这里面有很多新颖的概念,值得我们去探索。

第四部分,程序编译和代码优化,这部分内容其实比较冷门,但实际上是很复杂的,这里面提到了很多JVM对于程序执行的优化,包括编译期的优化和运行期的优化,优化的目的是让Java程序更高效地运行,了解了这部分内容之后,你一定会对JVM虚拟机的设计产生崇敬之情。

第五部分,主要介绍了JVM对Java多线程的支持,Java中的多线程自然也是基于JVM进行设计和实现的,其中就涉及到了我们常用的锁,这里主要介绍的是synchronized,它的本质是互斥锁,但是随着JVM对于重量级锁synchronized的优化,它也逐渐开始支持轻量级锁和偏向锁。

可以说,本书全程都是精华,基本上都是重点,考试会考,当然其中也有一些内容比较冷门,不怎么受面试官待见。但是这本书基本上把JVM里我们需要掌握的知识都讲清楚了,对于JVM的理论学习,这一本书足矣。

JVM调优实战

讲完了理论,终于到了实战的部分。
JVM知识整体看来是一个偏理论的知识模块,似乎能实践的东西不多,但实际上,JVM方面能实践的东西可不少,比如JVM调优,JVM的GC分析以及内存分析,都是面试官很喜欢考察的实践能力。
接下来的部分,我们就来讲讲JVM实战的内容。

在一些高级Java面试中,关于JVM的问题可能就会涉及到JVM调优和实践上了,比如你有没有遇到过OOM或者内存泄漏,你是怎么发现它们的,又或者,GC过于频繁,我们应该如何进行排查。
总之,这类问题都是立足于实践,考察的就是候选人的实践经验,这对于平时一直CRUD,连服务器都没怎么碰过的朋友来说,确实是一个不小的挑战。

那咋办呢,其实办法也不是没有,毕竟我就是一个没有JVM实践经验的小白,之前我对于这方面的复习主要是通过几个方法。

找一些比较知名的JVM调优工具,试用一下,比如Jprofile,还有JDK自带的jmap jstack等等。把这些工具都拿来用于自己的程序测试,写几个oom或者是内存泄漏的程序,看看工具里都会出现什么情况,这就是其中一种不错的学习方法。

但是有人会说,很多面试题都是要有高并或者高负载的场景,平时自己的代码根本不会出现这种问题,那怎么办呢,其实也有办法,网上对于这类调优面试题其实也有很多分享,针对某一种场景如何调优,操作步骤应该是怎样的,其实都能从别人的文章中找到一些答案,这样,即使你平时工作没有这类实践,也可以通过学习JVM调优实战的文章来进行复习,其实道理都是一样的。

推荐资源

书籍

《深入理解JVM虚拟机》

视频

我整理了一些JVM方面的学习视频,分享给大家,其实这方面的视频资源并不多,毕竟大多数视频还是讲项目或者基础为主,能把JVM虚拟机讲透讲好的人确实不多。

博客

Java技术仓库《Java程序员复习指南》
https://github.com/h2pl/Java-...
整合全网优质Java学习内容,帮助你从基础到进阶系统化复习Java

面试指南

全网最热的Java面试指南,共200多页,非常实用,不管是用于复习还是准备面试都是不错的。

总结

关于如何学习JVM虚拟机,并且搞定相关面试题,我们今天就讲到这里了,如果还有什么疑问也可以到我公众号【程序员黄小斜】里找我探讨,后续会有更多的文章推出,包括如何系统性地学习JavaWeb,敬请期待。

对了,你想问我文章里提到的书籍和视频去哪找?我已经给你准备好了

文中提到的资源都可以免费领取,在我的公众号【程序员黄小斜】回复“Java并发编程”即可免费领取对应的资源。

写在最后

如果觉得本文对你有帮助的话,请你也不要吝啬你的“好看”哈,转发朋友圈就是对我最大的支持啦,你们的支持是对我最大的鼓励。

对本系列文章有什么建议和意见,也欢迎留言告诉我,期待你的回馈。

推荐阅读

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'post:/article/[id]/hide/cancel' => 'init+login:Api\\Article#hideCancel', 'post:/article/[id]/report' => 'init+login:Api\\Article#report', 'post:/article/file' => 'Api\\Storage?type=file#uploadLargeFile', 'get:/question/newest' => 'Api\\Question?tab=newest#questions', 'get:/question/hottest' => 'Api\\Question?tab=hottest#questions', 'get:/question/unanswered' => 'Api\\Question?tab=unanswered#questions', 'get:/question/channel/[id]' => 'Api\\Question?tab=channel#questions', 'post:/question/[id]/delete' => 'init+login:Api\\Question#delete', 'post:/question/[id]/bookmark' => 'init+login:Api\\Question#bookmark', 'post:/question/[id]/bookmark/cancel' => 'init+login:Api\\Question#cancelBookmark', 'post:/question/[id]/vote/up' => 'init+login:Api\\Question#voteUp', 'post:/question/[id]/vote/up/cancel' => 'init+login:Api\\Question#voteUpCancel', 'post:/question/[id]/vote/down' => 'init+login:Api\\Question#voteDown', 'post:/question/[id]/vote/down/cancel' => 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'post:/l/[id]/delete' => 'init+login:Api\\Live#delete', 'post:/l/[id]/finish' => 'init+login:Api\\Live#finish', 'post:/l/[id]/continue' => 'init+login:Api\\Live#continue', 'post:/l/[id]/setPlayback' => 'init+login:Api\\Live#setPlayback', 'post:/l/[id]/setPlayback/cancel' => 'init+login:Api\\Live#cancelPlayback', 'post:/l/sign' => 'init+login:Api\\Live#sign', 'post:/l/[id]/stick' => 'init+login:Api\\Live#stick', 'post:/l/[id]/stick/cancel' => 'init+login:Api\\Live#stickCancel', 'post:/l/[id]/hide' => 'init+login:Api\\Live#hide', 'post:/l/[id]/hide/cancel' => 'init+login:Api\\Live#hideCancel', 'get:/l/[id]/learntime' => 'init+login:Api\\Live#learntime', 'get:/polyv/[vid]/token' => 'init+login:Api\\Live#polyvToken', ...], '/' => 'Index?tab=newest#block+index', '/newest' => 'Index?tab=newest#block+index', '/hottest' => 'Index?tab=hottest#block+index', '/subscribed' => 'init+login:Index?tab=subscribed#block+index', '/channel/[slug]/tag/[tag]' => 'Index?tab=channel#block+index', '/channel/[slug]' => 'Index?tab=channel#block+index', '/channel/[slug]/articles' => 'Article?tab=channel#block+index', '/channel/[slug]/questions' => 'Question?tab=channel#block+index', '/search' => 'Index#search', '/a/[id]' => 'Article#detail', '/a/[id]/downloads' => 'init+login:Article#downloadRecord', '/a/[id]/exportDownloads' => 'init+login:Article#exportDownloadRecord', '/a/[id]/edit' => 'init+login:Article#write', '/write' => 'init+login:Article#write', '/blogs/channel/[slug]' => 'Blog#index', '/blogs' => 'Blog#index', '/blog/[slug]' => 'Blog#blog+detail', '/blog/[slug]/setting' => 'init+login:Blog#blog+setting', '/questions' => 'Question?tab=newest#block+index', '/questions/newest' => 'Question?tab=newest#block+index', '/questions/hottest' => 'Question?tab=hottest#block+index', '/questions/unanswered' => 'Question?tab=unanswered#block+index', '/questions/channel/[slug]/tag/[tag]' => 'Question?tab=channel#block+index', '/questions/channel/[slug]' => 'Question?tab=channel#block+index', '/q/[id]' => 'Question#detail', '/q/[id]/edit' => 'init+login:Question#write', '/ask' => 'init+login:Question#write', '/q/[id]/answer/[aid]' => 'init+login:Question#detail', '/q/[id]/answer/[aid]/edit' => 'init+login:Question#answerEdit', '/events' => 'Activity?tab=newest#cities+index', '/events/newest' => 'Activity?tab=newest#cities+index', '/events/mine' => 'Activity?tab=mine#cities+index', '/events/signed' => 'Activity?tab=signed#cities+index', '/events/city/[city]' => 'Activity#cities+index', '/events/write' => 'init+login:Activity#write', '/e/[id]/edit' => 'init+login:Activity#write', '/e/[id]/join' => 'init+login:Activity#join', '/e/[id]/members' => 'init+login:Activity#members', '/e/[id]/members-hook' => 'init+login:Activity#membersHook', '/e/[id]/exportMembers' => 'init+login:Activity#exportMembers', '/e/[id]/exportMembersHook' => 'init+login:Activity#exportMembersHook', '/e/[id]' => 'Activity#detail', '/t/[slug]' => 'Tag#tag+block+index', '/t/[slug]/questions' => 'Tag#tag+block+questions', '/t/[slug]/articles' => 'Tag#tag+block+articles', '/u/[slug]' => 'User#user+index', '/u/[slug]/questions' => 'User#user+questions', '/u/[slug]/answers' => 'User#user+answers', '/u/[slug]/articles' => 'User#user+articles', '/u/[slug]/articles/trash' => 'User#user+trashedArticles', '/u/[slug]/[type]/following' => 'User#user+following', '/u/[slug]/fans' => 'User#user+fans', '/u/[slug]/bookmarks' => 'User#user+bookmarks', '/u/[slug]/ranks' => 'User#user+ranks', '/user/events' => 'init+login:User#events', '/user/captcha' => 'User#captcha', '/login' => 'Account#login', '/register' => 'Account#login', '/user/password' => 'Account#password', '/user/settings' => 'init+login:Account#settings', '/user/security' => 'init+login:Account#security', '/logout' => 'init+login:Account#logout', '/user/oauth/[type]?code' => 'OAuth#config+oAuth2Token', '/user/oauth/[type]' => 'OAuth#config+redirect', '/user/binding/[id]/[type]/cancel' => 'init+login:Account#bindingCancel', '/user/[id]/change' => 'init+login:Account#change', '/user/change/cancel' => 'init+login:Account#cancelChange', '/user/mail/unsubscribe' => 'User#unsubscribeMail', '/about' => 'Page#about', '/privacy' => 'Page#privacy', '/tos' => 'Page#tos', '/rules' => 'Page#rules', '/help' => 'Page#help', '/links' => 'Page#links', '/referer' => 'Page#referer', '/MP_verify_qFSAa4qd4Ri3EJOr.txt' => 'Page?title=qFSAa4qd4Ri3EJOr#text', '/ByteDanceVerify.html' => 'Page?title=Zd3BnU%2BycRCDS4Z3WT3X#html', '/sogousiteverification.txt' => 'Page?title=CHuGWalK2x#text', '/img/[id]' => 'Storage#image', '/file/[id]' => 'init+login:Storage#file', '/lives' => 'Live#index', '/lives/mine' => 'init+login:Live?tab=mine#index', '/lives/add' => 'init+login:Live#write', '/l/[id]/edit' => 'init+login:Live#write', '/l/[id]/members' => 'init+login:Live#members', '/l/[id]/exportMembers' => 'init+login:Live#exportMembers', '/l/[id]/learns' => 'init+login:Live#learns', '/l/[id]/exportLearns' => 'init+login:Live#exportLearns', '/l/[id]/cover' => 'Live#cover', '/l/[id]' => 'Live#detail', '/l/[id]/join' => 'Live#join', '/weblive/[id]' => 'Live#weblive', '/download' => 'File#block+index', '/download/apply' => 'init+login:File#apply', '/drafts' => 'init+login:Draft#index', '/topics' => 'Explore#index', '/topic/[id]' => 'Explore#detail', '/link' => 'Link#redirect', '/stopics/zhouyinpu' => 'Stopics#zhouyinpu', '/stopics/xingchencpu' => 'Stopics#xingchencpu', '/stopics/aliyun-yitian' => 'Stopics#yitian', '/stopics/avh-on-baidu-cloud' => 'Stopics#avh', '/stopics/anolis-os' => 'Stopics#anolis', '/ailab' => 'AILab#index', '/ailab/models/[id]' => 'AILab#detail', '/ailab/models' => 'AILab#models', '/books' => 'Read#index', '/search_sitemap/aijishu.txt' => 'Index#sitemapRedirect', '/search_sitemap/aijishu.xml' => 'Index#sitemap', 'send_mail' => 'Cli\\Queue#mail', 'send_marketing_mail' => 'Cli\\Queue#marketingMail', 'send_sms' => 'Cli\\Queue#aliSms', 'ranking' => 'Cli\\Ranking#ranking', 'import_tags' => 'Cli\\Import#tags', 'import_feed' => 'Cli\\Import#feed', 'hot_questions' => 'Cli\\Hot#questions', 'hot_articles' => 'Cli\\Hot#articles', 'wechat_events' => 'Cli\\WechatEventsQueue#events', 'update_live_status' => 'Cli\\Live#updateLivesStatus', 'update_affiliate' => 'Cli\\Affiliate#update', 'generateUser' => 'Cli\\GenerateUser#run', 'generateUserSF' => 'Cli\\GenerateUserSF#run', 'resetName' => 'Cli\\GenerateUserSF#resetName', 'activity_coming' => 'Cli\\Activity#notification', ...] ).../loader.php:48
40.0002398792L8\Mvc\Server->__construct( $routes = ['@' => 'Page#notFound', '/status.html' => 'null:Page#status', '/robots.txt' => 'null:Page#robots', '/api' => ['post:/article/add' => 'init+login:Api\\Article#add', 'post:/article/edit' => 'init+login:Api\\Article#edit', 'post:/question/add' => 'init+login:Api\\Question#add', 'post:/question/edit' => 'init+login:Api\\Question#edit', 'get:/channel/newest' => 'Api\\Feed?tab=newest#contents', 'get:/channel/hottest' => 'Api\\Feed?tab=hottest#contents', 'get:/channel/recommend' => 'Api\\Feed?tab=recommend#contents', 'get:/channel/subscribed' => 'init+login:Api\\Feed?tab=subscribed#contents', 'get:/channel/[id]/tag/[tagId]' => 'Api\\Feed?tab=newest#contents', 'get:/channel/[id]' => 'Api\\Feed?tab=newest#contents', 'get:/article/newest' => 'Api\\Article?tab=newest#articles', 'get:/article/hottest' => 'Api\\Article?tab=hottest#articles', 'get:/article/recommend' => 'Api\\Article?tab=recommend#articles', 'get:/article/subscribed' => 'Api\\Article?tab=subscribed#articles', 'get:/article/channel/[id]/tag/[tagId]' => 'Api\\Article?tab=channel#articles', 'get:/article/channel/[id]' => 'Api\\Article?tab=channel#articles', 'post:/article/[id]/blog/delete' => 'init+login:Api\\Article#deleteBlog', 'post:/article/[id]/delete' => 'init+login:Api\\Article#delete', 'post:/article/[id]/bookmark' => 'init+login:Api\\Article#bookmark', 'post:/article/[id]/bookmark/cancel' => 'init+login:Api\\Article#cancelBookmark', 'post:/article/[id]/vote/up' => 'init+login:Api\\Article#voteUp', 'post:/article/[id]/vote/up/cancel' => 'init+login:Api\\Article#voteUpCancel', 'post:/article/[id]/recommend' => 'init+login:Api\\Article#recommend', 'post:/article/[id]/recommend/cancel' => 'init+login:Api\\Article#recommendCancel', 'post:/article/[id]/stick' => 'init+login:Api\\Article#stick', 'post:/article/[id]/stick/cancel' => 'init+login:Api\\Article#stickCancel', 'post:/article/[id]/hide' => 'init+login:Api\\Article#hide', 'post:/article/[id]/hide/cancel' => 'init+login:Api\\Article#hideCancel', 'post:/article/[id]/report' => 'init+login:Api\\Article#report', 'post:/article/file' => 'Api\\Storage?type=file#uploadLargeFile', 'get:/question/newest' => 'Api\\Question?tab=newest#questions', 'get:/question/hottest' => 'Api\\Question?tab=hottest#questions', 'get:/question/unanswered' => 'Api\\Question?tab=unanswered#questions', 'get:/question/channel/[id]' => 'Api\\Question?tab=channel#questions', 'post:/question/[id]/delete' => 'init+login:Api\\Question#delete', 'post:/question/[id]/bookmark' => 'init+login:Api\\Question#bookmark', 'post:/question/[id]/bookmark/cancel' => 'init+login:Api\\Question#cancelBookmark', 'post:/question/[id]/vote/up' => 'init+login:Api\\Question#voteUp', 'post:/question/[id]/vote/up/cancel' => 'init+login:Api\\Question#voteUpCancel', 'post:/question/[id]/vote/down' => 'init+login:Api\\Question#voteDown', 'post:/question/[id]/vote/down/cancel' => 'init+login:Api\\Question#voteDownCancel', 'post:/question/[id]/follow' => 'init+login:Api\\Question#follow', 'post:/question/[id]/follow/cancel' => 'init+login:Api\\Question#cancelFollow', 'post:/question/[id]/report' => 'init+login:Api\\Question#report', 'post:/question/[id]/invite' => 'init+login:Api\\Question#invite', 'post:/question/[id]/invite/cancel' => 'init+login:Api\\Question#cancelInvite', 'post:/answer/add' => 'init+login:Api\\Answer#add', 'post:/answer/edit' => 'init+login:Api\\Answer#edit', 'post:/answer/[id]/delete' => 'init+login:Api\\Answer#delete', 'post:/answer/[id]/accept' => 'init+login:Api\\Answer#accept', 'post:/answer/[id]/accept/cancel' => 'init+login:Api\\Answer#acceptCancel', 'post:/answer/[id]/vote/up' => 'init+login:Api\\Answer#voteUp', 'post:/answer/[id]/vote/up/cancel' => 'init+login:Api\\Answer#voteUpCancel', 'post:/answer/[id]/vote/down' => 'init+login:Api\\Answer#voteDown', 'post:/answer/[id]/vote/down/cancel' => 'init+login:Api\\Answer#voteDownCancel', 'post:/answer/[id]/report' => 'init+login:Api\\Answer#report', 'get:/user/[id]/timeline' => 'Api\\User#timeline', 'post:/user/avatar' => 'init+login:Api\\Storage?type=avatar#upload+userAvatar', 'post:/user/register/send' => 'Api\\Account#sendCode', 'post:/user/register' => 'Api\\Account#register', 'post:/user/login' => 'Api\\Account#login', 'post:/user/[id]/follow' => 'init+login:Api\\User#follow', 'post:/user/[id]/follow/cancel' => 'init+login:Api\\User#cancelFollow', 'get:/user/search' => 'init+login:Api\\User#search', 'get:/user/events' => 'init+login:Api\\User#events', 'post:/user/events/viewedAll' => 'init+login:Api\\User#eventsViewedAll', 'post:/user/events/[id]/view' => 'init+login:Api\\User#eventsViewed', 'post:/user/privacy/allowed' => 'init+login:Api\\User#allowedPrivacy', 'post:/user/setting/info' => 'init+login:Api\\Account#infoSetting', 'post:/user/setting/notification' => 'init+login:Api\\Account#notificationSetting', 'post:/user/setting/privacy' => 'init+login:Api\\Account#privacySetting', 'post:/user/setting/mail' => 'init+login:Api\\Account#setMail', 'post:/user/setting/mail/confirm' => 'init+login:Api\\Account#setMailConfirm', 'post:/user/setting/phone' => 'init+login:Api\\Account#setPhone', 'post:/user/setting/phone/confirm' => 'init+login:Api\\Account#setPhoneConfirm', 'post:/user/setting/password' => 'init+login:Api\\Account#setPassword', 'post:/user/password/reset' => 'Api\\Account#resetPassword', 'post:/user/password/reset/proceed' => 'Api\\Account#resetPasswordProceed', 'post:/user/password/reset/confirm' => 'Api\\Account#resetPasswordConfirm', 'post:/user/[id]/report' => 'init+login:Api\\Comment#report', 'get:/blog/[id]/articles' => 'Api\\Article?tab=blog#articles', 'get:/blog/[id]/contents' => 'Api\\Blog#blog+contents', 'post:/blog/[id]/avatar' => 'init+login:Api\\Storage?type=avatar#upload+blogAvatar', 'post:/blog/add' => 'init+login:Api\\Blog#add', 'post:/blog/[id]/edit' => 'init+login:Api\\Blog#edit', 'post:/blog/[id]/follow' => 'init+login:Api\\Blog#follow', 'post:/blog/[id]/follow/cancel' => 'init+login:Api\\Blog#cancelFollow', 'post:/blog/[id]/author/invite' => 'init+login:Api\\BlogAuthor#invite', 'post:/blog/[id]/author/confirm' => 'init+login:Api\\BlogAuthor#confirm', 'post:/blog/[id]/author/refuse' => 'init+login:Api\\BlogAuthor#refuse', 'post:/blog/[id]/author/delete' => 'init+login:Api\\BlogAuthor#delete', 'post:/blog/[id]/author/change' => 'init+login:Api\\BlogAuthor#change', 'get:/comment/list/[id]' => 'Api\\Comment#comments', 'post:/comment/add' => 'init+login:Api\\Comment#add', 'post:/comment/edit' => 'init+login:Api\\Comment#edit', 'post:/comment/[id]/delete' => 'init+login:Api\\Comment#delete', 'post:/comment/[id]/vote/up' => 'init+login:Api\\Comment#voteUp', 'post:/comment/[id]/vote/up/cancel' => 'init+login:Api\\Comment#voteUpCancel', 'post:/comment/[id]/report' => 'init+login:Api\\Comment#report', 'post:/tag/add' => 'init+login:Api\\Tag#add', 'post:/tag/edit' => 'init+login:Api\\Tag#edit', 'get:/tag/default' => 'Api\\Tag#defaultTags', 'post:/tag/[id]/follow' => 'init+login:Api\\Tag#follow', 'post:/tag/[id]/follow/cancel' => 'init+login:Api\\Tag#cancelFollow', 'get:/reason/[model]/[method]' => 'init+login:Api\\Reason#getReasons', 'post:/storage/image' => 'init+login:Api\\Storage?type=image#upload+image', 'get:/storage/signature/upyun' => 'init+login:Api\\Storage?type=file#getUpyunSignature', 'get:/storage/signature' => 'init+login:Api\\Storage?type=file#getAliyunSignature', 'post:/storage/signature/qiniu' => 'init+login:Api\\Storage?type=file#getQiniuSignature', 'get:/wechat/events' => 'Api\\Wechat#events', 'post:/wechat/events' => 'Api\\Wechat#events', 'get:/wechat/menu' => 'Api\\Wechat#menu', 'get:/wechat/qrcode' => 'Api\\Wechat#qrcode', 'get:/wechat/checkLogin' => 'Api\\Wechat#checkLogin', 'post:/l/add' => 'init+login:Api\\Live#add', 'post:/l/[id]/edit' => 'init+login:Api\\Live#edit', 'post:/l/[id]/delete' => 'init+login:Api\\Live#delete', 'post:/l/[id]/finish' => 'init+login:Api\\Live#finish', 'post:/l/[id]/continue' => 'init+login:Api\\Live#continue', 'post:/l/[id]/setPlayback' => 'init+login:Api\\Live#setPlayback', 'post:/l/[id]/setPlayback/cancel' => 'init+login:Api\\Live#cancelPlayback', 'post:/l/sign' => 'init+login:Api\\Live#sign', 'post:/l/[id]/stick' => 'init+login:Api\\Live#stick', 'post:/l/[id]/stick/cancel' => 'init+login:Api\\Live#stickCancel', 'post:/l/[id]/hide' => 'init+login:Api\\Live#hide', 'post:/l/[id]/hide/cancel' => 'init+login:Api\\Live#hideCancel', 'get:/l/[id]/learntime' => 'init+login:Api\\Live#learntime', 'get:/polyv/[vid]/token' => 'init+login:Api\\Live#polyvToken', ...], '/' => 'Index?tab=newest#block+index', '/newest' => 'Index?tab=newest#block+index', '/hottest' => 'Index?tab=hottest#block+index', '/subscribed' => 'init+login:Index?tab=subscribed#block+index', '/channel/[slug]/tag/[tag]' => 'Index?tab=channel#block+index', '/channel/[slug]' => 'Index?tab=channel#block+index', '/channel/[slug]/articles' => 'Article?tab=channel#block+index', '/channel/[slug]/questions' => 'Question?tab=channel#block+index', '/search' => 'Index#search', '/a/[id]' => 'Article#detail', '/a/[id]/downloads' => 'init+login:Article#downloadRecord', '/a/[id]/exportDownloads' => 'init+login:Article#exportDownloadRecord', '/a/[id]/edit' => 'init+login:Article#write', '/write' => 'init+login:Article#write', '/blogs/channel/[slug]' => 'Blog#index', '/blogs' => 'Blog#index', '/blog/[slug]' => 'Blog#blog+detail', '/blog/[slug]/setting' => 'init+login:Blog#blog+setting', '/questions' => 'Question?tab=newest#block+index', '/questions/newest' => 'Question?tab=newest#block+index', '/questions/hottest' => 'Question?tab=hottest#block+index', '/questions/unanswered' => 'Question?tab=unanswered#block+index', '/questions/channel/[slug]/tag/[tag]' => 'Question?tab=channel#block+index', '/questions/channel/[slug]' => 'Question?tab=channel#block+index', '/q/[id]' => 'Question#detail', '/q/[id]/edit' => 'init+login:Question#write', '/ask' => 'init+login:Question#write', '/q/[id]/answer/[aid]' => 'init+login:Question#detail', '/q/[id]/answer/[aid]/edit' => 'init+login:Question#answerEdit', '/events' => 'Activity?tab=newest#cities+index', '/events/newest' => 'Activity?tab=newest#cities+index', '/events/mine' => 'Activity?tab=mine#cities+index', '/events/signed' => 'Activity?tab=signed#cities+index', '/events/city/[city]' => 'Activity#cities+index', '/events/write' => 'init+login:Activity#write', '/e/[id]/edit' => 'init+login:Activity#write', '/e/[id]/join' => 'init+login:Activity#join', '/e/[id]/members' => 'init+login:Activity#members', '/e/[id]/members-hook' => 'init+login:Activity#membersHook', '/e/[id]/exportMembers' => 'init+login:Activity#exportMembers', '/e/[id]/exportMembersHook' => 'init+login:Activity#exportMembersHook', '/e/[id]' => 'Activity#detail', '/t/[slug]' => 'Tag#tag+block+index', '/t/[slug]/questions' => 'Tag#tag+block+questions', '/t/[slug]/articles' => 'Tag#tag+block+articles', '/u/[slug]' => 'User#user+index', '/u/[slug]/questions' => 'User#user+questions', '/u/[slug]/answers' => 'User#user+answers', '/u/[slug]/articles' => 'User#user+articles', '/u/[slug]/articles/trash' => 'User#user+trashedArticles', '/u/[slug]/[type]/following' => 'User#user+following', '/u/[slug]/fans' => 'User#user+fans', '/u/[slug]/bookmarks' => 'User#user+bookmarks', '/u/[slug]/ranks' => 'User#user+ranks', '/user/events' => 'init+login:User#events', '/user/captcha' => 'User#captcha', '/login' => 'Account#login', '/register' => 'Account#login', '/user/password' => 'Account#password', '/user/settings' => 'init+login:Account#settings', '/user/security' => 'init+login:Account#security', '/logout' => 'init+login:Account#logout', '/user/oauth/[type]?code' => 'OAuth#config+oAuth2Token', '/user/oauth/[type]' => 'OAuth#config+redirect', '/user/binding/[id]/[type]/cancel' => 'init+login:Account#bindingCancel', '/user/[id]/change' => 'init+login:Account#change', '/user/change/cancel' => 'init+login:Account#cancelChange', '/user/mail/unsubscribe' => 'User#unsubscribeMail', '/about' => 'Page#about', '/privacy' => 'Page#privacy', '/tos' => 'Page#tos', '/rules' => 'Page#rules', '/help' => 'Page#help', '/links' => 'Page#links', '/referer' => 'Page#referer', '/MP_verify_qFSAa4qd4Ri3EJOr.txt' => 'Page?title=qFSAa4qd4Ri3EJOr#text', '/ByteDanceVerify.html' => 'Page?title=Zd3BnU%2BycRCDS4Z3WT3X#html', '/sogousiteverification.txt' => 'Page?title=CHuGWalK2x#text', '/img/[id]' => 'Storage#image', '/file/[id]' => 'init+login:Storage#file', '/lives' => 'Live#index', '/lives/mine' => 'init+login:Live?tab=mine#index', '/lives/add' => 'init+login:Live#write', '/l/[id]/edit' => 'init+login:Live#write', '/l/[id]/members' => 'init+login:Live#members', '/l/[id]/exportMembers' => 'init+login:Live#exportMembers', '/l/[id]/learns' => 'init+login:Live#learns', '/l/[id]/exportLearns' => 'init+login:Live#exportLearns', '/l/[id]/cover' => 'Live#cover', '/l/[id]' => 'Live#detail', '/l/[id]/join' => 'Live#join', '/weblive/[id]' => 'Live#weblive', '/download' => 'File#block+index', '/download/apply' => 'init+login:File#apply', '/drafts' => 'init+login:Draft#index', '/topics' => 'Explore#index', '/topic/[id]' => 'Explore#detail', '/link' => 'Link#redirect', '/stopics/zhouyinpu' => 'Stopics#zhouyinpu', '/stopics/xingchencpu' => 'Stopics#xingchencpu', '/stopics/aliyun-yitian' => 'Stopics#yitian', '/stopics/avh-on-baidu-cloud' => 'Stopics#avh', '/stopics/anolis-os' => 'Stopics#anolis', '/ailab' => 'AILab#index', '/ailab/models/[id]' => 'AILab#detail', '/ailab/models' => 'AILab#models', '/books' => 'Read#index', '/search_sitemap/aijishu.txt' => 'Index#sitemapRedirect', '/search_sitemap/aijishu.xml' => 'Index#sitemap', 'send_mail' => 'Cli\\Queue#mail', 'send_marketing_mail' => 'Cli\\Queue#marketingMail', 'send_sms' => 'Cli\\Queue#aliSms', 'ranking' => 'Cli\\Ranking#ranking', 'import_tags' => 'Cli\\Import#tags', 'import_feed' => 'Cli\\Import#feed', 'hot_questions' => 'Cli\\Hot#questions', 'hot_articles' => 'Cli\\Hot#articles', 'wechat_events' => 'Cli\\WechatEventsQueue#events', 'update_live_status' => 'Cli\\Live#updateLivesStatus', 'update_affiliate' => 'Cli\\Affiliate#update', 'generateUser' => 'Cli\\GenerateUser#run', 'generateUserSF' => 'Cli\\GenerateUserSF#run', 'resetName' => 'Cli\\GenerateUserSF#resetName', 'activity_coming' => 'Cli\\Activity#notification', ...] ).../App.php:71
50.0003399840L8\Mvc\Server::serve( $controller = 'Article#detail', $request = class L8\Mvc\Request { private $_ip = '216.73.216.241'; private $_acceptLangs = FALSE; private $_baseUrl = ''; private $_pathInfo = '/a/1060000000098755'; private $_method = NULL; private $_requestUri = '/a/1060000000098755'; private $_requestRoot = NULL; private $_referer = NULL; private $_isSecure = NULL; private $_isMobile = NULL; private $_jsonParams = []; private $_params = ['id' => '1060000000098755']; private $_isCli = FALSE; private $_route = '/a/[id]' }, $response = class L8\Mvc\Response { private $_httpCode = [100 => 'Continue', 101 => 'Switching Protocols', 200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content', 300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 307 => 'Temporary Redirect', 400 => 'Bad Request', 401 => 'Unauthorized', 402 => 'Payment Required', 403 => 'Forbidden', 404 => 'Not Found', 405 => 'Method Not Allowed', 406 => 'Not Acceptable', 407 => 'Proxy Authentication Required', 408 => 'Request Timeout', 409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Request Entity Too Large', 414 => 'Request-URI Too Long', 415 => 'Unsupported Media Type', 416 => 'Requested Range Not Satisfiable', 417 => 'Expectation Failed', 500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Timeout', 505 => 'HTTP Version Not Supported']; private $_cookies = [0 => [...]]; private $_statusCode = 200; private $_charset = 'UTF-8'; private $_contentType = 'text/html'; private $_headers = []; private $_result = class Ent\Result\Twig { private $_data = [...]; private $_template = 'article/detail.twig'; private ${L8\Mvc\Result\AbstractResult}_event = class L8\Mvc\Controller\ControllerEvent { ... } } }, $respond = ??? ).../Server.php:47
60.01371184256L8\Mvc\Response->respond( ).../Server.php:183
70.01371184488Ent\Result\Twig->render( ).../Response.php:149
80.01441226368Twig\Environment->display( $name = 'article/detail.twig', $context = ['article' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $statusText = [...] }, 'title' => '五分钟学Java:如何学习Java面试必考的JVM虚拟机', 'commentList' => class Ent\Value\Comment { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 0; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'excerpt' => '原创声明本文首发于微信公众号【程序员黄小斜】本文作者:黄小斜转载请务必在文章开头注明出处和作者。本文思维导图为什么要学习JVM虚拟机最近的你有没有参加Java面试呢?你有没有发现,Java面试中总是爱考一类问题,那就是JVM虚拟机,为什么面试官这么爱考察JVM的问题呢,这是因为,所有的Java程序本质上都是运行在JVM...', 'relations' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 6; private ${L8\Mvc\Value\AbstractValue}_length = 6; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE; private $statusText = [...] }, 'EntKeywords' => 'Java', 'allowDownload' => FALSE, 'downloadLimitType' => 'task', 'pageName' => 'detail', 'wechatQrcode' => 'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=gQEh8DwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAycllVQkFMREhjdkMxZXR5dk5IY3cAAgSdVfhqAwQAjScA', 'signPackage' => ['appId' => 'wxd2f93f15c9e73adc', 'nonceStr' => 'pqw2Jz8lZPLJnzLG', 'timestamp' => 1794668333, 'url' => 'https://community.aijishu.com/a/1060000000098755', 'signature' => 'e8f7d235f15ed66fd94d3727602f6204823fbb62', 'rawString' => 'jsapi_ticket=LIKLckvwlJT9cWIhEQTwfOR0M1-ny5w7fa1RhaCvcWYfhA82l1TJPHq0oB76a75PNjlPWAif-XBgc2DmutdtPQ&noncestr=pqw2Jz8lZPLJnzLG&timestamp=1794668333&url=https://community.aijishu.com/a/1060000000098755'], 'CSRFToken' => 'dc43b167a911ef88bb52b8d88197244e', 'links' => class Ent\Value\Link { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 22; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'wxLogin' => 'https://open.weixin.qq.com/connect/qrconnect?appid=wx28bb22f416bf4d6b&redirect_uri=https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat&scope=snsapi_login&self_redirect=false&login_type=jssdk&style=dark&https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css', 'wxLoginParams' => ['id' => 'wx-login-qrcode', 'appid' => 'wx28bb22f416bf4d6b', 'scope' => 'snsapi_login', 'redirect_uri' => 'https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat', 'state' => '', 'style' => 'dark', 'href' => 'https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css']] ).../Twig.php:58
90.01461235352Twig\TemplateWrapper->display( $context = ['article' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $statusText = [...] }, 'title' => '五分钟学Java:如何学习Java面试必考的JVM虚拟机', 'commentList' => class Ent\Value\Comment { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 0; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'excerpt' => '原创声明本文首发于微信公众号【程序员黄小斜】本文作者:黄小斜转载请务必在文章开头注明出处和作者。本文思维导图为什么要学习JVM虚拟机最近的你有没有参加Java面试呢?你有没有发现,Java面试中总是爱考一类问题,那就是JVM虚拟机,为什么面试官这么爱考察JVM的问题呢,这是因为,所有的Java程序本质上都是运行在JVM...', 'relations' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 6; private ${L8\Mvc\Value\AbstractValue}_length = 6; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE; private $statusText = [...] }, 'EntKeywords' => 'Java', 'allowDownload' => FALSE, 'downloadLimitType' => 'task', 'pageName' => 'detail', 'wechatQrcode' => 'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=gQEh8DwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAycllVQkFMREhjdkMxZXR5dk5IY3cAAgSdVfhqAwQAjScA', 'signPackage' => ['appId' => 'wxd2f93f15c9e73adc', 'nonceStr' => 'pqw2Jz8lZPLJnzLG', 'timestamp' => 1794668333, 'url' => 'https://community.aijishu.com/a/1060000000098755', 'signature' => 'e8f7d235f15ed66fd94d3727602f6204823fbb62', 'rawString' => 'jsapi_ticket=LIKLckvwlJT9cWIhEQTwfOR0M1-ny5w7fa1RhaCvcWYfhA82l1TJPHq0oB76a75PNjlPWAif-XBgc2DmutdtPQ&noncestr=pqw2Jz8lZPLJnzLG&timestamp=1794668333&url=https://community.aijishu.com/a/1060000000098755'], 'CSRFToken' => 'dc43b167a911ef88bb52b8d88197244e', 'links' => class Ent\Value\Link { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 22; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'wxLogin' => 'https://open.weixin.qq.com/connect/qrconnect?appid=wx28bb22f416bf4d6b&redirect_uri=https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat&scope=snsapi_login&self_redirect=false&login_type=jssdk&style=dark&https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css', 'wxLoginParams' => ['id' => 'wx-login-qrcode', 'appid' => 'wx28bb22f416bf4d6b', 'scope' => 'snsapi_login', 'redirect_uri' => 'https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat', 'state' => '', 'style' => 'dark', 'href' => 'https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css']] ).../Environment.php:291
100.01461235352Twig\Template->display( $context = ['article' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $statusText = [...] }, 'title' => '五分钟学Java:如何学习Java面试必考的JVM虚拟机', 'commentList' => class Ent\Value\Comment { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 0; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'excerpt' => '原创声明本文首发于微信公众号【程序员黄小斜】本文作者:黄小斜转载请务必在文章开头注明出处和作者。本文思维导图为什么要学习JVM虚拟机最近的你有没有参加Java面试呢?你有没有发现,Java面试中总是爱考一类问题,那就是JVM虚拟机,为什么面试官这么爱考察JVM的问题呢,这是因为,所有的Java程序本质上都是运行在JVM...', 'relations' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 6; private ${L8\Mvc\Value\AbstractValue}_length = 6; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE; private $statusText = [...] }, 'EntKeywords' => 'Java', 'allowDownload' => FALSE, 'downloadLimitType' => 'task', 'pageName' => 'detail', 'wechatQrcode' => 'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=gQEh8DwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAycllVQkFMREhjdkMxZXR5dk5IY3cAAgSdVfhqAwQAjScA', 'signPackage' => ['appId' => 'wxd2f93f15c9e73adc', 'nonceStr' => 'pqw2Jz8lZPLJnzLG', 'timestamp' => 1794668333, 'url' => 'https://community.aijishu.com/a/1060000000098755', 'signature' => 'e8f7d235f15ed66fd94d3727602f6204823fbb62', 'rawString' => 'jsapi_ticket=LIKLckvwlJT9cWIhEQTwfOR0M1-ny5w7fa1RhaCvcWYfhA82l1TJPHq0oB76a75PNjlPWAif-XBgc2DmutdtPQ&noncestr=pqw2Jz8lZPLJnzLG&timestamp=1794668333&url=https://community.aijishu.com/a/1060000000098755'], 'CSRFToken' => 'dc43b167a911ef88bb52b8d88197244e', 'links' => class Ent\Value\Link { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 22; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'wxLogin' => 'https://open.weixin.qq.com/connect/qrconnect?appid=wx28bb22f416bf4d6b&redirect_uri=https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat&scope=snsapi_login&self_redirect=false&login_type=jssdk&style=dark&https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css', 'wxLoginParams' => ['id' => 'wx-login-qrcode', 'appid' => 'wx28bb22f416bf4d6b', 'scope' => 'snsapi_login', 'redirect_uri' => 'https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat', 'state' => '', 'style' => 'dark', 'href' => 'https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css']], $blocks = [] ).../TemplateWrapper.php:47
110.01461235352Twig\Template->displayWithErrorHandling( $context = ['article' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $statusText = [...] }, 'title' => '五分钟学Java:如何学习Java面试必考的JVM虚拟机', 'commentList' => class Ent\Value\Comment { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 0; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'excerpt' => '原创声明本文首发于微信公众号【程序员黄小斜】本文作者:黄小斜转载请务必在文章开头注明出处和作者。本文思维导图为什么要学习JVM虚拟机最近的你有没有参加Java面试呢?你有没有发现,Java面试中总是爱考一类问题,那就是JVM虚拟机,为什么面试官这么爱考察JVM的问题呢,这是因为,所有的Java程序本质上都是运行在JVM...', 'relations' => class Ent\Value\Article { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 6; private ${L8\Mvc\Value\AbstractValue}_length = 6; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE; private $statusText = [...] }, 'EntKeywords' => 'Java', 'allowDownload' => FALSE, 'downloadLimitType' => 'task', 'pageName' => 'detail', 'wechatQrcode' => 'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=gQEh8DwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAycllVQkFMREhjdkMxZXR5dk5IY3cAAgSdVfhqAwQAjScA', 'signPackage' => ['appId' => 'wxd2f93f15c9e73adc', 'nonceStr' => 'pqw2Jz8lZPLJnzLG', 'timestamp' => 1794668333, 'url' => 'https://community.aijishu.com/a/1060000000098755', 'signature' => 'e8f7d235f15ed66fd94d3727602f6204823fbb62', 'rawString' => 'jsapi_ticket=LIKLckvwlJT9cWIhEQTwfOR0M1-ny5w7fa1RhaCvcWYfhA82l1TJPHq0oB76a75PNjlPWAif-XBgc2DmutdtPQ&noncestr=pqw2Jz8lZPLJnzLG&timestamp=1794668333&url=https://community.aijishu.com/a/1060000000098755'], 'CSRFToken' => 'dc43b167a911ef88bb52b8d88197244e', 'links' => class Ent\Value\Link { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 22; private ${L8\Mvc\Value\AbstractValue}_multi = TRUE }, 'wxLogin' => 'https://open.weixin.qq.com/connect/qrconnect?appid=wx28bb22f416bf4d6b&redirect_uri=https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat&scope=snsapi_login&self_redirect=false&login_type=jssdk&style=dark&https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css', 'wxLoginParams' => ['id' => 'wx-login-qrcode', 'appid' => 'wx28bb22f416bf4d6b', 'scope' => 'snsapi_login', 'redirect_uri' => 'https%3A%2F%2Fcommunity.aijishu.com%2Fuser%2Foauth%2Fwechat', 'state' => '', 'style' => 'dark', 'href' => 'https://cdn-assets.aijishu.com/v-29880a42/public/wx-qrcode.css']], $blocks = ['main' => [0 => class __TwigTemplate_4e1c94b12692330a0be02a0a30ed84d76a3eb1de7ec5852532698a907f6a2fbc { ... }, 1 => 'block_main'], 'footer' => [0 => class __TwigTemplate_4e1c94b12692330a0be02a0a30ed84d76a3eb1de7ec5852532698a907f6a2fbc { ... }, 1 => 'block_footer']] ).../Template.php:369
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190.01961478408__TwigTemplate_f886f99fcc833337a140021267c2ff818541876872dbdc8ce9d3901c7a7f353d->macro_blogBlock( $__blog__ = class Ent\Value\Blog { private ${L8\Mvc\Value\AbstractValue}_originalData = ['id' => '1070000000092225', 'user_id' => '1030000000005197', 'status' => 'available', 'name' => '五分钟学编程', 'slug' => 'wufenzhongxuebia', 'avatar' => NULL, 'description' => NULL, 'created' => '1582210597', 'modified' => '1582210597', 'tags' => '', 'contents' => '2']; private ${L8\Mvc\Value\AbstractValue}_data = [0 => [...]]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $_avatarPrefix = 'https://cdn-avatar.aijishu.com'; private $statusText = ['available' => '正常', 'deleted' => '删除', 'unpublished' => '未发布', 'hidden' => '已隐藏', 'refuse' => '已拒绝', 'invitation' => '邀请中', 'blocked' => '已禁止', 'unactivated' => ' 未激活'] } ).../CoreExtension.php:1141
200.01981580520twig_get_attribute( $env = class Twig\Environment { private $charset = 'UTF-8'; private $loader = class Twig\Loader\FilesystemLoader { protected $paths = [...]; protected $cache = [...]; protected $errorCache = [...]; private $rootPath = '/Data/webapps/aijishu/portal/' }; private $debug = FALSE; private $autoReload = FALSE; private $cache = class Twig\Cache\FilesystemCache { private $directory = '/tmp/template/'; private $options = 0 }; private $lexer = NULL; private $parser = NULL; private $compiler = NULL; private $globals = []; private $resolvedGlobals = []; private $loadedTemplates = ['__TwigTemplate_4e1c94b12692330a0be02a0a30ed84d76a3eb1de7ec5852532698a907f6a2fbc' => class __TwigTemplate_4e1c94b12692330a0be02a0a30ed84d76a3eb1de7ec5852532698a907f6a2fbc { ... }, '__TwigTemplate_f886f99fcc833337a140021267c2ff818541876872dbdc8ce9d3901c7a7f353d' => class __TwigTemplate_f886f99fcc833337a140021267c2ff818541876872dbdc8ce9d3901c7a7f353d { ... }, '__TwigTemplate_734d14ec28470defff3c4c29d599878cd0e3e81ebb74cc8775eed266b9c666e9' => class __TwigTemplate_734d14ec28470defff3c4c29d599878cd0e3e81ebb74cc8775eed266b9c666e9 { ... }]; private $strictVariables = FALSE; private $templateClassPrefix = '__TwigTemplate_'; private $originalCache = '/tmp/template'; private $extensionSet = class Twig\ExtensionSet { private $extensions = [...]; private $initialized = TRUE; private $runtimeInitialized = TRUE; private $staging = class Twig\Extension\StagingExtension { ... }; private $parsers = [...]; private $visitors = [...]; private $filters = [...]; private $tests = [...]; private $functions = [...]; private $unaryOperators = [...]; private $binaryOperators = [...]; private $globals = NULL; private $functionCallbacks = [...]; private $filterCallbacks = [...]; private $lastModified = 0 }; private $runtimeLoaders = []; private $runtimes = []; private $optionsHash = '["Twig\\\\Extension\\\\CoreExtension","Twig\\\\Extension\\\\EscaperExtension","Twig\\\\Extension\\\\OptimizerExtension"]:7:4:3.0.4-DEV:0:0' }, $source = class Twig\Source { private $code = ''; private $name = 'common/macro.twig'; private $path = '/Data/webapps/aijishu/template/common/macro.twig' }, $object = class Ent\Value\Blog { private ${L8\Mvc\Value\AbstractValue}_originalData = ['id' => '1070000000092225', 'user_id' => '1030000000005197', 'status' => 'available', 'name' => '五分钟学编程', 'slug' => 'wufenzhongxuebia', 'avatar' => NULL, 'description' => NULL, 'created' => '1582210597', 'modified' => '1582210597', 'tags' => '', 'contents' => '2']; private ${L8\Mvc\Value\AbstractValue}_data = [0 => [...]]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $_avatarPrefix = 'https://cdn-avatar.aijishu.com'; private $statusText = ['available' => '正常', 'deleted' => '删除', 'unpublished' => '未发布', 'hidden' => '已隐藏', 'refuse' => '已拒绝', 'invitation' => '邀请中', 'blocked' => '已禁止', 'unactivated' => ' 未激活'] }, $item = 'descriptionExcerpt', $arguments = [], $type = 'any', $isDefinedTest = FALSE, $ignoreStrictCheck = FALSE, $sandboxed = FALSE, $lineno = 241 ).../b208b717415210f8600cef834f225c901089bf3c5f28b14b371785604cf45ca1.php:750
210.01991580848L8\Mvc\Value\AbstractValue->__get( $name = 'descriptionExcerpt' ).../CoreExtension.php:1451
220.01991581328call_user_func_array:{/Data/webapps/aijishu/lib/L8/Mvc/Value/AbstractValue.php:198}( $function_name = [0 => class Ent\Value\Blog { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $_avatarPrefix = 'https://cdn-avatar.aijishu.com'; private $statusText = [...] }, 1 => 'getDescriptionExcerpt'], $parameters = [] ).../AbstractValue.php:198
230.01991581416Ent\Value\Blog->getDescriptionExcerpt( $limit = ??? ).../AbstractValue.php:198
240.01991581424L8\Mvc\Value\AbstractValue->__get( $name = 'descriptionText' ).../DescriptionTrait.php:25
250.01991581904call_user_func_array:{/Data/webapps/aijishu/lib/L8/Mvc/Value/AbstractValue.php:198}( $function_name = [0 => class Ent\Value\Blog { private ${L8\Mvc\Value\AbstractValue}_originalData = [...]; private ${L8\Mvc\Value\AbstractValue}_data = [...]; private ${L8\Mvc\Value\AbstractValue}_pos = 0; private ${L8\Mvc\Value\AbstractValue}_length = 1; private ${L8\Mvc\Value\AbstractValue}_multi = FALSE; private $_avatarPrefix = 'https://cdn-avatar.aijishu.com'; private $statusText = [...] }, 1 => 'getDescriptionText'], $parameters = [] ).../AbstractValue.php:198
260.01991581992Ent\Value\Blog->getDescriptionText( ).../AbstractValue.php:198
270.01991582000Util::markdown( $text = NULL ).../DescriptionTrait.php:14
280.01991584504HyperDown\Parser->makeHtml( $text = NULL ).../Util.php:76
290.01991592672HyperDown\Parser->initText( $text = NULL ).../Parser.php:159