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d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/releases" rel="noopener noreferrer" target="_blank" aria-label="Release Notes"><!--[--><!--]--><span>Release Notes</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 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class="header-anchor" href="#arthas-阿尔萨斯-能为你做什么" aria-hidden="true">#</a> Arthas（阿尔萨斯）能为你做什么？</h3><p><code>Arthas</code> 是 Alibaba 开源的 Java 诊断工具，深受开发者喜爱。</p><p>当你遇到以下类似问题而束手无策时，<code>Arthas</code>可以帮助你解决：</p><ol start="0"><li>这个类从哪个 jar 包加载的？为什么会报各种类相关的 Exception？</li><li>我改的代码为什么没有执行到？难道是我没 commit？分支搞错了？</li><li>遇到问题无法在线上 debug，难道只能通过加日志再重新发布吗？</li><li>线上遇到某个用户的数据处理有问题，但线上同样无法 debug，线下无法重现！</li><li>是否有一个全局视角来查看系统的运行状况？</li><li>有什么办法可以监控到 JVM 的实时运行状态？</li><li>怎么快速定位应用的热点，生成火焰图？</li><li>怎样直接从 JVM 内查找某个类的实例？</li></ol><p><code>Arthas</code> 支持 JDK 6+，支持 Linux/Mac/Windows，采用命令行交互模式，同时提供丰富的 <code>Tab</code> 自动补全功能，进一步方便进行问题的定位和诊断。</p><p><strong>如果您在使用 Arthas，请让我们知道，您的使用对我们非常重要：<a href="https://github.com/alibaba/arthas/issues/111" target="_blank" rel="noopener noreferrer">查看<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" 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