https://deploy-preview-3203--dubbo.netlify.app/zh-cn/overview/mannual/java-sdk/reference-manual/faq/Recent content in 错误码 FAQ on Apache DubboHugozh-cnhttps://deploy-preview-3203--dubbo.netlify.app/zh-cn/overview/mannual/java-sdk/reference-manual/faq/intro/Mon, 01 Jan 0001 00:00:00 +0000https://deploy-preview-3203--dubbo.netlify.app/zh-cn/overview/mannual/java-sdk/reference-manual/faq/intro/<h3 id="背景">背景</h3> <p>Dubbo 内部依赖的 Logger 抽象层提供了日志输出能力，但是大部分的异常日志都没有附带排查说明，导致用户看到异常后无法进行处理。</p> <p>为了解决这个问题，自 Dubbo 3.1 版本开始，引入了错误码机制。其将官方文档中的错误码 FAQ 与日志框架连接起来。在日志抽象输出异常的同时附带输出对应的官网文档链接，引导用户进行自主排查。</p> <h3 id="错误码格式">错误码格式</h3> <p><code>[Cat]-[X]</code></p> <blockquote> <p>两个空格均为数字。其中第一个数字为类别，第二个数字为具体错误码。</p> </blockquote> <h3 id="提示显示的格式">提示显示的格式</h3> <div class="highlight"><pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-fallback" data-lang="fallback"><span style="display:flex;"><span>This may be caused by ..., go to https://dubbo.apache.org/faq/[Cat]/[X] to find instructions. </span></span></code></pre></div><blockquote> <p>另外在这句话后可以指定补充的信息（即 extendedInformation）。</p> </blockquote> <h3 id="显示的实例">显示的实例</h3> <div class="highlight"><pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-fallback" data-lang="fallback"><span style="display:flex;"><span>[31/07/22 02:43:07:796 CST] main WARN support.AbortPolicyWithReport: [DUBBO] Thread pool is EXHAUSTED! Thread Name: Test, Pool Size: 0 (active: 0, core: 1, max: 1, largest: 0), Task: 0 (completed: 0), Executor status:(isShutdown:false, isTerminated:false, isTerminating:false), in dubbo://10.20.130.230:20880!, dubbo version: , current host: 10.20.130.230, error code: 0-1. This may be caused by too much client requesting provider, go to https://dubbo.apache.org/faq/0/1 to find instructions. </span></span></code></pre></div><blockquote> <p>用户只需点击链接即可根据错误码查找到原因。</p>