| <!doctype html> |
| <html lang="zh-CN" data-theme="light"> |
| <head> |
| <meta charset="utf-8" /> |
| <meta name="viewport" content="width=device-width,initial-scale=1" /> |
| <meta name="generator" content="VuePress 2.0.0-rc.26" /> |
| <meta name="theme" content="VuePress Theme Hope 2.0.0-rc.99" /> |
| <style> |
| :root { |
| --vp-c-bg: #fff; |
| } |
| |
| [data-theme="dark"] { |
| --vp-c-bg: #1b1b1f; |
| } |
| |
| html, |
| body { |
| background: var(--vp-c-bg); |
| } |
| </style> |
| <script> |
| const userMode = localStorage.getItem("vuepress-theme-hope-scheme"); |
| const systemDarkMode = |
| window.matchMedia && |
| window.matchMedia("(prefers-color-scheme: dark)").matches; |
| |
| if (userMode === "dark" || (userMode !== "light" && systemDarkMode)) { |
| document.documentElement.setAttribute("data-theme", "dark"); |
| } |
| </script> |
| <script type="application/ld+json">{"@context":"https://schema.org","@type":"Article","headline":"数据订阅API","image":[""],"dateModified":"2025-04-22T04:18:37.000Z","author":[]}</script><meta property="og:url" content="https://iotdb.apache.org/zh/UserGuide/V1.3.x/API/Programming-Data-Subscription.html"><meta property="og:site_name" content="IoTDB Website"><meta property="og:title" content="数据订阅API"><meta property="og:description" content="数据订阅API IoTDB 提供了强大的数据订阅功能，允许用户通过订阅 API 实时获取 IoTDB 新增的数据。详细的功能定义及介绍： 1 核心步骤 创建Topic：创建一个Topic，Topic中包含希望订阅的测点。 订阅Topic：在 consumer 订阅 topic 前，topic 必须已经被创建，否则订阅会失败。同一个 consumer g..."><meta property="og:type" content="article"><meta property="og:locale" content="zh-CN"><meta property="og:locale:alternate" content="en-US"><meta property="og:updated_time" content="2025-04-22T04:18:37.000Z"><meta property="article:modified_time" content="2025-04-22T04:18:37.000Z"><link rel="alternate" hreflang="en-us" href="https://iotdb.apache.org/UserGuide/V1.3.x/API/Programming-Data-Subscription.html"><script async src="https://widget.kapa.ai/kapa-widget.bundle.js" data-website-id="2d37bfdd-8d98-40ba-9223-9d4f81bfb327" data-project-name="Apache IoTDB" data-project-color="#FFFFFF" data-button-z-index="1999" data-button-padding="4px" data-button-border-radius="4px" data-button-image-height="24px" data-button-image-width="20px" data-button-text-color="#9E2878" data-project-logo="https://iotdb.apache.org/img/logo.svg" data-button-position-right="16px" data-button-position-bottom="8px" data-button-height="56px" data-button-width="48px" data-button-text="Ask" data-modal-override-open-selector="#custom-ask-ai-button" data-modal-image-width="150px" data-modal-title="AI Docs" data-modal-title-color="#9E2878" data-deep-thinking-button-active-bg-color="#F6F7F8" data-deep-thinking-button-active-text-color="#9E2878" data-deep-thinking-button-active-hover-text-color="#9E2878" data-modal-disclaimer="这是一个针对 Apache IoTDB 的定制化大型语言模型，能够访问所有[文档](iotdb.apache.org/docs/)、[GitHub 公开问题、PR 和自述文件](github.com/apache/iotdb)。 |
| |
| 如果您遇到 <Error in verifying browser for feedback submission. Captcha token could not be obtained.> 请确保您能够顺畅访问 Google 服务。" data-user-analytics-fingerprint-enabled="true" data-consent-required="true" data-consent-screen-disclaimer="点击<I agree, let's chat>即表示您同意按照 kapa.ai 的[隐私政策](https://www.kapa.ai/content/privacy-policy)使用 AI 助手。本服务使用 reCAPTCHA，您需要同意 Google 的[隐私政策](https://policies.google.com/privacy)和[服务条款](https://policies.google.com/terms)。继续操作即表示您明确同意 kapa.ai 和 Google 的隐私政策。" data-language="zh"></script><link rel="icon" href="/favicon.ico"><meta name="Description" content="Apache IoTDB: Time Series Database for IoT"><meta name="Keywords" content="TSDB, time series, time series database, IoTDB, IoT database, IoT data management, 时序数据库, 时间序列管理, IoTDB, 物联网数据库, 实时数据库, 物联网数据管理, 物联网数据"><meta name="baidu-site-verification" content="wfKETzB3OT"><meta name="google-site-verification" content="mZWAoRY0yj_HAr-s47zHCGHzx5Ju-RVm5wDbPnwQYFo"><script type="text/javascript">var _paq = window._paq = window._paq || []; |
| /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ |
| _paq.push(["setDoNotTrack", true]); |
| _paq.push(["disableCookies"]); |
| _paq.push(['trackPageView']); |
| _paq.push(['enableLinkTracking']); |
| (function() { |
| var u="https://analytics.apache.org/"; |
| _paq.push(['setTrackerUrl', u+'matomo.php']); |
| _paq.push(['setSiteId', '56']); |
| var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0]; |
| g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s); |
| })(); |
| </script><title>数据订阅API | IoTDB Website</title><meta name="description" content="数据订阅API IoTDB 提供了强大的数据订阅功能，允许用户通过订阅 API 实时获取 IoTDB 新增的数据。详细的功能定义及介绍： 1 核心步骤 创建Topic：创建一个Topic，Topic中包含希望订阅的测点。 订阅Topic：在 consumer 订阅 topic 前，topic 必须已经被创建，否则订阅会失败。同一个 consumer g..."> |
| <link rel="preload" href="/assets/style-JraSdRX4.css" as="style"><link rel="stylesheet" href="/assets/style-JraSdRX4.css"> |
| <link rel="modulepreload" href="/assets/app-pmkzp6TS.js"><link rel="modulepreload" href="/assets/Programming-Data-Subscription.html-WriiqUHw.js"> |
| |
| </head> |
| <body> |
| <div id="app"><!--[--><!--[--><!--[--><span tabindex="-1"></span><a href="#main-content" class="vp-skip-link sr-only">跳至主要內容</a><!--]--><!--[--><div class="theme-container external-link-icon has-toc" vp-container><!--[--><header id="navbar" class="vp-navbar" vp-navbar><div class="vp-navbar-start"><button type="button" class="vp-toggle-sidebar-button" title="Toggle Sidebar"><span class="icon"></span></button><!--[--><a class="route-link vp-brand" href="/zh/" aria-label="带我回家"><img class="vp-nav-logo" src="/logo.png" alt><!----><!----></a><!--]--></div><div class="vp-navbar-center"><!--[--><!--]--></div><div class="vp-navbar-end"><!--[--><!--[--><div id="docsearch-container" style="display:none;"></div><div class="docsearch-placeholder"><button type="button" aria-label="搜索文档" aria-keyshortcuts="Control+k" class="DocSearch DocSearch-Button"><span class="DocSearch-Button-Container"><svg width="20" height="20" viewBox="0 0 24 24" aria-hidden="true" class="DocSearch-Search-Icon"><circle cx="11" cy="11" r="8" stroke="currentColor" fill="none" stroke-width="1.4"></circle><path d="m21 21-4.3-4.3" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">搜索文档</span></span><span class="DocSearch-Button-Keys"><kbd class="DocSearch-Button-Key DocSearch-Button-Key--ctrl">Ctrl</kbd><kbd class="DocSearch-Button-Key">K</kbd></span></button></div><!--]--><div><button id="custom-ask-ai-button"> ✨ Ask AI </button></div><nav class="vp-nav-links"><div class="vp-nav-item hide-in-mobile"><div class="vp-dropdown-wrapper"><button type="button" class="vp-dropdown-title" aria-label="文档"><!--[--><!---->文档<!--]--><span class="arrow"></span><ul class="vp-dropdown"><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/UserGuide/latest/QuickStart/QuickStart_apache.html" aria-label="v2.0.x"><!---->v2.0.x<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/UserGuide/V1.3.x/QuickStart/QuickStart_apache.html" aria-label="v1.3.x"><!---->v1.3.x<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/UserGuide/V1.2.x/QuickStart/QuickStart.html" aria-label="v1.2.x"><!---->v1.2.x<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/UserGuide/V0.13.x/QuickStart/QuickStart.html" aria-label="v0.13.x"><!---->v0.13.x<!----></a></li></ul></button></div></div><div class="vp-nav-item hide-in-mobile"><a class="auto-link external-link" href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=177051872" aria-label="系统设计" rel="noopener noreferrer" target="_blank"><!---->系统设计<!----></a></div><div class="vp-nav-item hide-in-mobile"><a class="route-link auto-link" href="/zh/Download/" aria-label="下载"><!---->下载<!----></a></div><div class="vp-nav-item hide-in-mobile"><div class="vp-dropdown-wrapper"><button type="button" class="vp-dropdown-title" aria-label="社区"><!--[--><!---->社区<!--]--><span class="arrow"></span><ul class="vp-dropdown"><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/Community/About.html" aria-label="关于社区"><!---->关于社区<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/Community/Development-Guide.html" aria-label="贡献指南"><!---->贡献指南<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/Community/Community-Partners.html" aria-label="社区伙伴"><!---->社区伙伴<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/Community/Feedback.html" aria-label="交流与反馈"><!---->交流与反馈<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/Community/Events-and-Reports.html" aria-label="活动与报告"><!---->活动与报告<!----></a></li><li class="vp-dropdown-item"><a class="route-link auto-link" href="/zh/Community/Committers.html" aria-label="Committers"><!---->Committers<!----></a></li></ul></button></div></div><div class="vp-nav-item hide-in-mobile"><div class="vp-dropdown-wrapper"><button type="button" class="vp-dropdown-title" aria-label="ASF"><!--[--><!---->ASF<!--]--><span class="arrow"></span><ul class="vp-dropdown"><li class="vp-dropdown-item"><a class="auto-link external-link" href="https://www.apache.org/" aria-label="基金会" rel="noopener noreferrer" target="_blank"><!---->基金会<!----></a></li><li class="vp-dropdown-item"><a class="auto-link external-link" href="https://www.apache.org/licenses/" aria-label="许可证" rel="noopener noreferrer" target="_blank"><!---->许可证<!----></a></li><li class="vp-dropdown-item"><a class="auto-link external-link" href="https://www.apache.org/security/" aria-label="安全" rel="noopener noreferrer" target="_blank"><!---->安全<!----></a></li><li class="vp-dropdown-item"><a class="auto-link external-link" href="https://www.apache.org/foundation/sponsorship.html" aria-label="赞助" rel="noopener noreferrer" target="_blank"><!---->赞助<!----></a></li><li class="vp-dropdown-item"><a class="auto-link external-link" href="https://www.apache.org/foundation/thanks.html" aria-label="致谢" rel="noopener noreferrer" target="_blank"><!---->致谢<!----></a></li><li class="vp-dropdown-item"><a class="auto-link external-link" href="https://www.apache.org/events/current-event" aria-label="活动" rel="noopener noreferrer" target="_blank"><!---->活动<!----></a></li><li class="vp-dropdown-item"><a class="auto-link external-link" href="https://privacy.apache.org/policies/privacy-policy-public.html" aria-label="隐私" rel="noopener noreferrer" target="_blank"><!---->隐私<!----></a></li></ul></button></div></div></nav><div class="vp-nav-item"><div class="vp-dropdown-wrapper"><button type="button" class="vp-dropdown-title" aria-label="选择语言"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon i18n-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="i18n icon" name="i18n" style="width:1rem;height:1rem;vertical-align:middle;"><path d="M379.392 460.8 494.08 575.488l-42.496 102.4L307.2 532.48 138.24 701.44l-71.68-72.704L234.496 460.8l-45.056-45.056c-27.136-27.136-51.2-66.56-66.56-108.544h112.64c7.68 14.336 16.896 27.136 26.112 35.84l45.568 46.08 45.056-45.056C382.976 312.32 409.6 247.808 409.6 204.8H0V102.4h256V0h102.4v102.4h256v102.4H512c0 70.144-37.888 161.28-87.04 210.944L378.88 460.8zM576 870.4 512 1024H409.6l256-614.4H768l256 614.4H921.6l-64-153.6H576zM618.496 768h196.608L716.8 532.48 618.496 768z"></path></svg><!--]--><span class="arrow"></span><ul class="vp-dropdown"><li class="vp-dropdown-item"><a class="route-link auto-link" href="/UserGuide/V1.3.x/API/Programming-Data-Subscription.html" aria-label="English"><!---->English<!----></a></li><li class="vp-dropdown-item"><a class="route-link route-link-active auto-link" href="/zh/UserGuide/V1.3.x/API/Programming-Data-Subscription.html" aria-label="简体中文"><!---->简体中文<!----></a></li></ul></button></div></div><div class="vp-nav-item hide-in-mobile"><button type="button" class="vp-color-mode-switch" id="color-mode-switch"><svg xmlns="http://www.w3.org/2000/svg" class="icon auto-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="auto icon" name="auto" style="display:none;"><path d="M512 992C246.92 992 32 777.08 32 512S246.92 32 512 32s480 214.92 480 480-214.92 480-480 480zm0-840c-198.78 0-360 161.22-360 360 0 198.84 161.22 360 360 360s360-161.16 360-360c0-198.78-161.22-360-360-360zm0 660V212c165.72 0 300 134.34 300 300 0 165.72-134.28 300-300 300z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" class="icon dark-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="dark icon" name="dark" style="display:none;"><path d="M524.8 938.667h-4.267a439.893 439.893 0 0 1-313.173-134.4 446.293 446.293 0 0 1-11.093-597.334A432.213 432.213 0 0 1 366.933 90.027a42.667 42.667 0 0 1 45.227 9.386 42.667 42.667 0 0 1 10.24 42.667 358.4 358.4 0 0 0 82.773 375.893 361.387 361.387 0 0 0 376.747 82.774 42.667 42.667 0 0 1 54.187 55.04 433.493 433.493 0 0 1-99.84 154.88 438.613 438.613 0 0 1-311.467 128z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" class="icon light-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="light icon" name="light" style="display:block;"><path d="M952 552h-80a40 40 0 0 1 0-80h80a40 40 0 0 1 0 80zM801.88 280.08a41 41 0 0 1-57.96-57.96l57.96-58a41.04 41.04 0 0 1 58 58l-58 57.96zM512 752a240 240 0 1 1 0-480 240 240 0 0 1 0 480zm0-560a40 40 0 0 1-40-40V72a40 40 0 0 1 80 0v80a40 40 0 0 1-40 40zm-289.88 88.08-58-57.96a41.04 41.04 0 0 1 58-58l57.96 58a41 41 0 0 1-57.96 57.96zM192 512a40 40 0 0 1-40 40H72a40 40 0 0 1 0-80h80a40 40 0 0 1 40 40zm30.12 231.92a41 41 0 0 1 57.96 57.96l-57.96 58a41.04 41.04 0 0 1-58-58l58-57.96zM512 832a40 40 0 0 1 40 40v80a40 40 0 0 1-80 0v-80a40 40 0 0 1 40-40zm289.88-88.08 58 57.96a41.04 41.04 0 0 1-58 58l-57.96-58a41 41 0 0 1 57.96-57.96z"></path></svg></button></div><div class="vp-nav-item vp-action"><a class="vp-action-link" href="https://github.com/apache/iotdb" target="_blank" rel="noopener noreferrer" aria-label="GitHub"><svg xmlns="http://www.w3.org/2000/svg" class="icon github-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="github icon" name="github" style="width:1.25rem;height:1.25rem;vertical-align:middle;"><path d="M511.957 21.333C241.024 21.333 21.333 240.981 21.333 512c0 216.832 140.544 400.725 335.574 465.664 24.49 4.395 32.256-10.07 32.256-23.083 0-11.69.256-44.245 0-85.205-136.448 29.61-164.736-64.64-164.736-64.64-22.315-56.704-54.4-71.765-54.4-71.765-44.587-30.464 3.285-29.824 3.285-29.824 49.195 3.413 75.179 50.517 75.179 50.517 43.776 75.008 114.816 53.333 142.762 40.79 4.523-31.66 17.152-53.377 31.19-65.537-108.971-12.458-223.488-54.485-223.488-242.602 0-53.547 19.114-97.323 50.517-131.67-5.035-12.33-21.93-62.293 4.779-129.834 0 0 41.258-13.184 134.912 50.346a469.803 469.803 0 0 1 122.88-16.554c41.642.213 83.626 5.632 122.88 16.554 93.653-63.488 134.784-50.346 134.784-50.346 26.752 67.541 9.898 117.504 4.864 129.834 31.402 34.347 50.474 78.123 50.474 131.67 0 188.586-114.73 230.016-224.042 242.09 17.578 15.232 33.578 44.672 33.578 90.454v135.85c0 13.142 7.936 27.606 32.854 22.87C862.25 912.597 1002.667 728.747 1002.667 512c0-271.019-219.648-490.667-490.71-490.667z"></path></svg></a></div><!--]--><button type="button" class="vp-toggle-navbar-button" aria-label="Toggle Navbar" aria-expanded="false" aria-controls="nav-screen"><span><span class="vp-top"></span><span class="vp-middle"></span><span class="vp-bottom"></span></span></button></div></header><!----><!--]--><!----><div class="toggle-sidebar-wrapper"><span class="arrow start"></span></div><aside id="sidebar" class="vp-sidebar" vp-sidebar><!--[--><p class="vp-sidebar-header iotdb-sidebar-header"><span class="vp-sidebar-title">IoTDB用户手册 (V1.3.x)</span></p><!----><!--]--><ul class="vp-sidebar-links"><li><section class="vp-sidebar-group"><p class="vp-sidebar-header"><!----><span class="vp-sidebar-title">IoTDB用户手册 (V1.3.x)</span><!----></p><ul class="vp-sidebar-links"></ul></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">关于IoTDB</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">预备知识</span><span class="vp-arrow end"></span></button><!----></section></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/QuickStart/QuickStart_apache.html" aria-label="快速上手"><!---->快速上手<!----></a></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">安装部署</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">基础功能</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">高级功能</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">AI 能力</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">工具体系</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable active" type="button"><!----><span class="vp-sidebar-title">应用编程接口</span><span class="vp-arrow down"></span></button><ul class="vp-sidebar-links"><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable active" type="button"><!----><span class="vp-sidebar-title">Java原生接口</span><span class="vp-arrow down"></span></button><ul class="vp-sidebar-links"><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-Java-Native-API.html" aria-label="Java原生API"><!---->Java原生API<!----></a></li><li><a class="route-link route-link-active auto-link vp-sidebar-link active" href="/zh/UserGuide/V1.3.x/API/Programming-Data-Subscription.html" aria-label="数据订阅API"><!---->数据订阅API<!----></a></li></ul></section></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-Python-Native-API.html" aria-label="Python原生接口"><!---->Python原生接口<!----></a></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-Cpp-Native-API.html" aria-label="C++原生接口"><!---->C++原生接口<!----></a></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-Go-Native-API.html" aria-label="Go原生接口"><!---->Go原生接口<!----></a></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-CSharp-Native-API.html" aria-label="C#原生接口"><!---->C#原生接口<!----></a></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-NodeJS-Native-API.html" aria-label="Node.js原生接口"><!---->Node.js原生接口<!----></a></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-Rust-Native-API.html" aria-label="Rust原生接口"><!---->Rust原生接口<!----></a></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-JDBC.html" aria-label="JDBC"><!---->JDBC<!----></a></li><li><a class="route-link auto-link vp-sidebar-link" href="/zh/UserGuide/V1.3.x/API/Programming-MQTT.html" aria-label="MQTT协议"><!---->MQTT协议<!----></a></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">REST API</span><span class="vp-arrow end"></span></button><!----></section></li></ul></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">生态集成</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">SQL手册</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">技术内幕</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">附录</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-header clickable" type="button"><!----><span class="vp-sidebar-title">FAQ</span><span class="vp-arrow end"></span></button><!----></section></li></ul><!----></aside><!--[--><main id="main-content" class="vp-page"><!--[--><!----><!----><nav class="vp-breadcrumb disable"></nav><div class="vp-page-title"><h1><!---->数据订阅API</h1><div class="page-info"><!----><!----><span class="page-date-info" aria-label="写作日期📅" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon" name="calendar"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 0c0-18.753-14.72-33.473-33.473-33.473s-33.52 14.72-33.52 33.473v33.473h66.993v-33.473zm468.81 33.52H716.4v100.465c0 18.753-14.72 33.473-33.472 33.473a33.145 33.145 0 01-33.473-33.473V143.657H381.53v100.465c0 18.753-14.72 33.473-33.473 33.473a33.145 33.145 0 01-33.473-33.473V143.657H180.6A134.314 134.314 0 0046.66 277.595v535.756A134.314 134.314 0 00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 33.473z"></path></svg><span data-allow-mismatch="text">2025/1/21</span><meta property="datePublished" content="2025-01-21T05:16:03.000Z"></span><!----><span class="page-reading-time-info" aria-label="阅读时间⌛" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon" name="timer"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>大约 6 分钟</span><meta property="timeRequired" content="PT6M"></span><!----><!----></div><hr></div><!----><div class="" vp-content><!----><div id="markdown-content"><h1 id="数据订阅api" tabindex="-1"><a class="header-anchor" href="#数据订阅api"><span>数据订阅API</span></a></h1><p>IoTDB 提供了强大的数据订阅功能，允许用户通过订阅 API 实时获取 IoTDB 新增的数据。详细的功能定义及介绍：<a class="route-link" href="/zh/UserGuide/V1.3.x/User-Manual/Data-subscription.html">数据订阅</a></p><h2 id="_1-核心步骤" tabindex="-1"><a class="header-anchor" href="#_1-核心步骤"><span>1 核心步骤</span></a></h2><ol><li>创建Topic：创建一个Topic，Topic中包含希望订阅的测点。</li><li>订阅Topic：在 consumer 订阅 topic 前，topic 必须已经被创建，否则订阅会失败。同一个 consumer group 下的 consumers 会均分数据。</li><li>消费数据：只有显式订阅了某个 topic，才会收到对应 topic 的数据。</li><li>取消订阅： consumer close 时会退出对应的 consumer group，同时取消现存的所有订阅。</li></ol><h2 id="_2-详细步骤" tabindex="-1"><a class="header-anchor" href="#_2-详细步骤"><span>2 详细步骤</span></a></h2><p>本章节用于说明开发的核心流程，并未演示所有的参数和接口，如需了解全部功能及参数请参见: <a class="route-link" href="/zh/UserGuide/V1.3.x/API/Programming-Java-Native-API.html#_3-%E5%85%A8%E9%87%8F%E6%8E%A5%E5%8F%A3%E8%AF%B4%E6%98%8E">全量接口说明</a></p><h3 id="_2-1-创建maven项目" tabindex="-1"><a class="header-anchor" href="#_2-1-创建maven项目"><span>2.1 创建maven项目</span></a></h3><p>创建一个maven项目，并导入以下依赖（JDK >= 1.8, Maven >= 3.6）</p><div class="language-xml line-numbers-mode" data-highlighter="shiki" data-ext="xml" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-xml"><span class="line"><span style="color:#ABB2BF;"><</span><span style="color:#E06C75;">dependencies</span><span style="color:#ABB2BF;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;"> <</span><span style="color:#E06C75;">dependency</span><span style="color:#ABB2BF;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;"> <</span><span style="color:#E06C75;">groupId</span><span style="color:#ABB2BF;">>org.apache.iotdb</</span><span style="color:#E06C75;">groupId</span><span style="color:#ABB2BF;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;"> <</span><span style="color:#E06C75;">artifactId</span><span style="color:#ABB2BF;">>iotdb-session</</span><span style="color:#E06C75;">artifactId</span><span style="color:#ABB2BF;">></span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> <!-- 版本号与数据库版本号相同 --></span></span> |
| <span class="line"><span style="color:#ABB2BF;"> <</span><span style="color:#E06C75;">version</span><span style="color:#ABB2BF;">>${project.version}</</span><span style="color:#E06C75;">version</span><span style="color:#ABB2BF;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;"> </</span><span style="color:#E06C75;">dependency</span><span style="color:#ABB2BF;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;"></</span><span style="color:#E06C75;">dependencies</span><span style="color:#ABB2BF;">></span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_2-2-代码案例" tabindex="-1"><a class="header-anchor" href="#_2-2-代码案例"><span>2.2 代码案例</span></a></h3><h4 id="_2-2-1-topic操作" tabindex="-1"><a class="header-anchor" href="#_2-2-1-topic操作"><span>2.2.1 Topic操作</span></a></h4><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-java"><span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.util.Optional</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.util.Properties</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.util.Set</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.rpc.IoTDBConnectionException</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.rpc.StatementExecutionException</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.rpc.subscription.config.TopicConstant</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.SubscriptionSession</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.model.Topic</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">public</span><span style="color:#C678DD;"> class</span><span style="color:#E5C07B;"> DataConsumerExample</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#C678DD;"> static</span><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> main</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#ABB2BF;">[] </span><span style="color:#E06C75;font-style:italic;">args</span><span style="color:#ABB2BF;">)</span><span style="color:#C678DD;"> throws</span><span style="color:#E5C07B;"> IoTDBConnectionException</span><span style="color:#ABB2BF;">,</span><span style="color:#E5C07B;"> StatementExecutionException</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#C678DD;"> try</span><span style="color:#ABB2BF;"> (</span><span style="color:#E5C07B;">SubscriptionSession</span><span style="color:#E06C75;"> session</span><span style="color:#56B6C2;"> =</span><span style="color:#C678DD;"> new</span><span style="color:#61AFEF;"> SubscriptionSession</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"127.0.0.1"</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">6667</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">67108864</span><span style="color:#ABB2BF;">)) {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 1. open session</span></span> |
| <span class="line"><span style="color:#E5C07B;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">open</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 2. create a topic of all data</span></span> |
| <span class="line"><span style="color:#E5C07B;"> Properties</span><span style="color:#E06C75;"> sessionConfig</span><span style="color:#56B6C2;"> =</span><span style="color:#C678DD;"> new</span><span style="color:#61AFEF;"> Properties</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E5C07B;"> sessionConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">TopicConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">PATH_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root.**"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#E5C07B;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">createTopic</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"allData"</span><span style="color:#ABB2BF;">, sessionConfig);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 3. show all topics</span></span> |
| <span class="line"><span style="color:#E5C07B;"> Set</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">Topic</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;">topics</span><span style="color:#56B6C2;"> =</span><span style="color:#E5C07B;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">getTopics</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E5C07B;"> System</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">out</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">println</span><span style="color:#ABB2BF;">(topics);</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 4. show a specific topic</span></span> |
| <span class="line"><span style="color:#E5C07B;"> Optional</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">Topic</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;">allData</span><span style="color:#56B6C2;"> =</span><span style="color:#E5C07B;"> session</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">getTopic</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"allData"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> System</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">out</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">println</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">allData</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">get</span><span style="color:#ABB2BF;">());</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="_2-2-2-数据消费" tabindex="-1"><a class="header-anchor" href="#_2-2-2-数据消费"><span>2.2.2 数据消费</span></a></h4><h5 id="场景-1-订阅iotdb中新增的实时数据-大屏或组态展示的场景" tabindex="-1"><a class="header-anchor" href="#场景-1-订阅iotdb中新增的实时数据-大屏或组态展示的场景"><span>场景-1: 订阅IoTDB中新增的实时数据（大屏或组态展示的场景）</span></a></h5><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-java"><span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.io.IOException</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.util.List</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.util.Properties</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.rpc.subscription.config.ConsumerConstant</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.rpc.subscription.config.TopicConstant</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.consumer.SubscriptionPullConsumer</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.payload.SubscriptionMessage</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.payload.SubscriptionMessageType</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.payload.SubscriptionSessionDataSet</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.tsfile.read.common.RowRecord</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">public</span><span style="color:#C678DD;"> class</span><span style="color:#E5C07B;"> DataConsumerExample</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#C678DD;"> static</span><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> main</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#ABB2BF;">[] </span><span style="color:#E06C75;font-style:italic;">args</span><span style="color:#ABB2BF;">)</span><span style="color:#C678DD;"> throws</span><span style="color:#E5C07B;"> IOException</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 5. create a pull consumer, the subscription is automatically cancelled when the logic in the try resources is completed</span></span> |
| <span class="line"><span style="color:#E5C07B;"> Properties</span><span style="color:#E06C75;"> consumerConfig</span><span style="color:#56B6C2;"> =</span><span style="color:#C678DD;"> new</span><span style="color:#61AFEF;"> Properties</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">CONSUMER_ID_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"c1"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">CONSUMER_GROUP_ID_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"cg1"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">USERNAME_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">PASSWORD_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> try</span><span style="color:#ABB2BF;"> (</span><span style="color:#E5C07B;">SubscriptionPullConsumer</span><span style="color:#E06C75;"> pullConsumer</span><span style="color:#56B6C2;"> =</span><span style="color:#C678DD;"> new</span><span style="color:#61AFEF;"> SubscriptionPullConsumer</span><span style="color:#ABB2BF;">(consumerConfig)) {</span></span> |
| <span class="line"><span style="color:#E5C07B;"> pullConsumer</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">open</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E5C07B;"> pullConsumer</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">subscribe</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"topic_all"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> while</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">true</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#E5C07B;"> List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">SubscriptionMessage</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;">messages</span><span style="color:#56B6C2;"> =</span><span style="color:#E5C07B;"> pullConsumer</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">poll</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">10000</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> for</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">final</span><span style="color:#E5C07B;"> SubscriptionMessage</span><span style="color:#E06C75;"> message</span><span style="color:#C678DD;"> :</span><span style="color:#ABB2BF;"> messages) {</span></span> |
| <span class="line"><span style="color:#C678DD;"> final</span><span style="color:#C678DD;"> short</span><span style="color:#E06C75;"> messageType</span><span style="color:#56B6C2;"> =</span><span style="color:#E5C07B;"> message</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">getMessageType</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#C678DD;"> if</span><span style="color:#ABB2BF;"> (</span><span style="color:#E5C07B;">SubscriptionMessageType</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">isValidatedMessageType</span><span style="color:#ABB2BF;">(messageType)) {</span></span> |
| <span class="line"><span style="color:#C678DD;"> for</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">final</span><span style="color:#E5C07B;"> SubscriptionSessionDataSet</span><span style="color:#E06C75;"> dataSet</span><span style="color:#C678DD;"> :</span><span style="color:#E5C07B;"> message</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">getSessionDataSetsHandler</span><span style="color:#ABB2BF;">()) {</span></span> |
| <span class="line"><span style="color:#C678DD;"> while</span><span style="color:#ABB2BF;"> (</span><span style="color:#E5C07B;">dataSet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">hasNext</span><span style="color:#ABB2BF;">()) {</span></span> |
| <span class="line"><span style="color:#C678DD;"> final</span><span style="color:#E5C07B;"> RowRecord</span><span style="color:#E06C75;"> record</span><span style="color:#56B6C2;"> =</span><span style="color:#E5C07B;"> dataSet</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">next</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E5C07B;"> System</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">out</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">println</span><span style="color:#ABB2BF;">(record);</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h5 id="场景-2-订阅新增的-tsfile-定期数据备份的场景" tabindex="-1"><a class="header-anchor" href="#场景-2-订阅新增的-tsfile-定期数据备份的场景"><span>场景-2:订阅新增的 TsFile（定期数据备份的场景）</span></a></h5><p>前提：需要被消费的topic的格式为TsfileHandler类型，举例：<code>create topic topic_all_tsfile with ('path'='root.**','format'='TsFileHandler')</code></p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-java"><span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.io.IOException</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.util.List</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> java.util.Properties</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.rpc.subscription.config.ConsumerConstant</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.rpc.subscription.config.TopicConstant</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.consumer.SubscriptionPullConsumer</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">import</span><span style="color:#E5C07B;"> org.apache.iotdb.session.subscription.payload.SubscriptionMessage</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">public</span><span style="color:#C678DD;"> class</span><span style="color:#E5C07B;"> DataConsumerExample</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#C678DD;"> static</span><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> main</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#ABB2BF;">[] </span><span style="color:#E06C75;font-style:italic;">args</span><span style="color:#ABB2BF;">)</span><span style="color:#C678DD;"> throws</span><span style="color:#E5C07B;"> IOException</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // 1. create a pull consumer, the subscription is automatically cancelled when the logic in the try resources is completed</span></span> |
| <span class="line"><span style="color:#E5C07B;"> Properties</span><span style="color:#E06C75;"> consumerConfig</span><span style="color:#56B6C2;"> =</span><span style="color:#C678DD;"> new</span><span style="color:#61AFEF;"> Properties</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">CONSUMER_ID_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"c1"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">CONSUMER_GROUP_ID_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"cg1"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">USERNAME_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">PASSWORD_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"root"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> consumerConfig</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">put</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ConsumerConstant</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">FILE_SAVE_DIR_KEY</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"/Users/iotdb/Downloads"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> try</span><span style="color:#ABB2BF;"> (</span><span style="color:#E5C07B;">SubscriptionPullConsumer</span><span style="color:#E06C75;"> pullConsumer</span><span style="color:#56B6C2;"> =</span><span style="color:#C678DD;"> new</span><span style="color:#61AFEF;"> SubscriptionPullConsumer</span><span style="color:#ABB2BF;">(consumerConfig)) {</span></span> |
| <span class="line"><span style="color:#E5C07B;"> pullConsumer</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">open</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E5C07B;"> pullConsumer</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">subscribe</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"topic_all_tsfile"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> while</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">true</span><span style="color:#ABB2BF;">) {</span></span> |
| <span class="line"><span style="color:#E5C07B;"> List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">SubscriptionMessage</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;">messages</span><span style="color:#56B6C2;"> =</span><span style="color:#E5C07B;"> pullConsumer</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">poll</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">10000</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> for</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">final</span><span style="color:#E5C07B;"> SubscriptionMessage</span><span style="color:#E06C75;"> message</span><span style="color:#C678DD;"> :</span><span style="color:#ABB2BF;"> messages) {</span></span> |
| <span class="line"><span style="color:#E5C07B;"> message</span><span style="color:#ABB2BF;">.</span><span style="color:#61AFEF;">getTsFileHandler</span><span style="color:#ABB2BF;">().</span><span style="color:#61AFEF;">copyFile</span><span style="color:#ABB2BF;">(</span><span style="color:#98C379;">"/Users/iotdb/Downloads/1.tsfile"</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="_2-全量接口说明" tabindex="-1"><a class="header-anchor" href="#_2-全量接口说明"><span>2 全量接口说明</span></a></h2><h3 id="_2-1-参数列表" tabindex="-1"><a class="header-anchor" href="#_2-1-参数列表"><span>2.1 参数列表</span></a></h3><p>可通过Properties参数对象设置消费者相关参数，具体参数如下。</p><h4 id="_2-1-1-subscriptionconsumer" tabindex="-1"><a class="header-anchor" href="#_2-1-1-subscriptionconsumer"><span>2.1.1 SubscriptionConsumer</span></a></h4><table><thead><tr><th style="text-align:left;">参数</th><th style="text-align:left;">是否必填（默认值）</th><th style="text-align:left;">参数含义</th></tr></thead><tbody><tr><td style="text-align:left;">host</td><td style="text-align:left;">optional: 127.0.0.1</td><td style="text-align:left;"><code>String</code>: IoTDB 中某 DataNode 的 RPC host</td></tr><tr><td style="text-align:left;">port</td><td style="text-align:left;">optional: 6667</td><td style="text-align:left;"><code>Integer</code>: IoTDB 中某 DataNode 的 RPC port</td></tr><tr><td style="text-align:left;">node-urls</td><td style="text-align:left;">optional: 127.0.0.1:6667</td><td style="text-align:left;"><code>List<String></code>: IoTDB 中所有 DataNode 的 RPC 地址，可以是多个；host:port 和 node-urls 选填一个即可。当 host:port 和 node-urls 都填写了，则取 host:port 和 node-urls 的<strong>并集</strong>构成新的 node-urls 应用</td></tr><tr><td style="text-align:left;">username</td><td style="text-align:left;">optional: root</td><td style="text-align:left;"><code>String</code>: IoTDB 中 DataNode 的用户名</td></tr><tr><td style="text-align:left;">password</td><td style="text-align:left;">optional: root</td><td style="text-align:left;"><code>String</code>: IoTDB 中 DataNode 的密码</td></tr><tr><td style="text-align:left;">groupId</td><td style="text-align:left;">optional</td><td style="text-align:left;"><code>String</code>: consumer group id，若未指定则随机分配（新的 consumer group），保证不同的 consumer group 对应的 consumer group id 均不相同</td></tr><tr><td style="text-align:left;">consumerId</td><td style="text-align:left;">optional</td><td style="text-align:left;"><code>String</code>: consumer client id，若未指定则随机分配，保证同一个 consumer group 中每一个 consumer client id 均不相同</td></tr><tr><td style="text-align:left;">heartbeatIntervalMs</td><td style="text-align:left;">optional: 30000 (min: 1000)</td><td style="text-align:left;"><code>Long</code>: consumer 向 IoTDB DataNode 定期发送心跳请求的间隔</td></tr><tr><td style="text-align:left;">endpointsSyncIntervalMs</td><td style="text-align:left;">optional: 120000 (min: 5000)</td><td style="text-align:left;"><code>Long</code>: consumer 探测 IoTDB 集群节点扩缩容情况调整订阅连接的间隔</td></tr><tr><td style="text-align:left;">fileSaveDir</td><td style="text-align:left;">optional: Paths.get(System.getProperty("user.dir"), "iotdb-subscription").toString()</td><td style="text-align:left;"><code>String</code>: consumer 订阅出的 TsFile 文件临时存放的目录路径</td></tr><tr><td style="text-align:left;">fileSaveFsync</td><td style="text-align:left;">optional: false</td><td style="text-align:left;"><code>Boolean</code>: consumer 订阅 TsFile 的过程中是否主动调用 fsync</td></tr></tbody></table><p><code>SubscriptionPushConsumer</code> 中的特殊配置：</p><table><thead><tr><th style="text-align:left;">参数</th><th style="text-align:left;">是否必填（默认值）</th><th style="text-align:left;">参数含义</th></tr></thead><tbody><tr><td style="text-align:left;">ackStrategy</td><td style="text-align:left;">optional: <code>ACKStrategy.AFTER_CONSUME</code></td><td style="text-align:left;">消费进度的确认机制包含以下选项：<code>ACKStrategy.BEFORE_CONSUME</code>（当 consumer 收到数据时立刻提交消费进度，<code>onReceive</code> 前）<code>ACKStrategy.AFTER_CONSUME</code>（当 consumer 消费完数据再去提交消费进度，<code>onReceive</code> 后）</td></tr><tr><td style="text-align:left;">consumeListener</td><td style="text-align:left;">optional</td><td style="text-align:left;">消费数据的回调函数，需实现 <code>ConsumeListener</code> 接口，定义消费 <code>SessionDataSetsHandler</code> 和 <code>TsFileHandler</code> 形式数据的处理逻辑</td></tr><tr><td style="text-align:left;">autoPollIntervalMs</td><td style="text-align:left;">optional: 5000 (min: 500)</td><td style="text-align:left;">Long: consumer 自动拉取数据的时间间隔，单位为<strong>毫秒</strong></td></tr><tr><td style="text-align:left;">autoPollTimeoutMs</td><td style="text-align:left;">optional: 10000 (min: 1000)</td><td style="text-align:left;">Long: consumer 每次拉取数据的超时时间，单位为<strong>毫秒</strong></td></tr></tbody></table><p><code>SubscriptionPullConsumer</code> 中的特殊配置：</p><table><thead><tr><th style="text-align:left;">参数</th><th style="text-align:left;">是否必填（默认值）</th><th style="text-align:left;">参数含义</th></tr></thead><tbody><tr><td style="text-align:left;">autoCommit</td><td style="text-align:left;">optional: true</td><td style="text-align:left;">Boolean: 是否自动提交消费进度如果此参数设置为 false，则需要调用 <code>commit</code> 方法来手动提交消费进度</td></tr><tr><td style="text-align:left;">autoCommitInterval</td><td style="text-align:left;">optional: 5000 (min: 500)</td><td style="text-align:left;">Long: 自动提交消费进度的时间间隔，单位为<strong>毫秒</strong>仅当 autoCommit 参数为 true 的时候才会生效</td></tr></tbody></table><h3 id="函数列表" tabindex="-1"><a class="header-anchor" href="#函数列表"><span>函数列表</span></a></h3><h4 id="数据订阅" tabindex="-1"><a class="header-anchor" href="#数据订阅"><span>数据订阅</span></a></h4><h5 id="subscriptionpullconsumer" tabindex="-1"><a class="header-anchor" href="#subscriptionpullconsumer"><span>SubscriptionPullConsumer</span></a></h5><table><thead><tr><th><strong>函数名</strong></th><th><strong>说明</strong></th><th><strong>参数</strong></th></tr></thead><tbody><tr><td><code>open()</code></td><td>打开消费者连接，启动消息消费。如果 <code>autoCommit</code> 启用，会启动自动提交工作器。</td><td>无</td></tr><tr><td><code>close()</code></td><td>关闭消费者连接。如果 <code>autoCommit</code> 启用，会在关闭前提交所有未提交的消息。</td><td>无</td></tr><tr><td><code>poll(final Duration timeout)</code></td><td>拉取消息，指定超时时间。</td><td><code>timeout</code> : 拉取的超时时间。</td></tr><tr><td><code>poll(final long timeoutMs)</code></td><td>拉取消息，指定超时时间（毫秒）。</td><td><code>timeoutMs</code> : 超时时间，单位为毫秒。</td></tr><tr><td><code>poll(final Set<String> topicNames, final Duration timeout)</code></td><td>拉取指定主题的消息，指定超时时间。</td><td><code>topicNames</code> : 要拉取的主题集合。<code>timeout</code>: 超时时间。</td></tr><tr><td><code>poll(final Set<String> topicNames, final long timeoutMs)</code></td><td>拉取指定主题的消息，指定超时时间（毫秒）。</td><td><code>topicNames</code> : 要拉取的主题集合。<code>timeoutMs</code>: 超时时间，单位为毫秒。</td></tr><tr><td><code>commitSync(final SubscriptionMessage message)</code></td><td>同步提交单条消息。</td><td><code>message</code> : 需要提交的消息对象。</td></tr><tr><td><code>commitSync(final Iterable<SubscriptionMessage> messages)</code></td><td>同步提交多条消息。</td><td><code>messages</code> : 需要提交的消息集合。</td></tr><tr><td><code>commitAsync(final SubscriptionMessage message)</code></td><td>异步提交单条消息。</td><td><code>message</code> : 需要提交的消息对象。</td></tr><tr><td><code>commitAsync(final Iterable<SubscriptionMessage> messages)</code></td><td>异步提交多条消息。</td><td><code>messages</code> : 需要提交的消息集合。</td></tr><tr><td><code>commitAsync(final SubscriptionMessage message, final AsyncCommitCallback callback)</code></td><td>异步提交单条消息并指定回调函数。</td><td><code>message</code> : 需要提交的消息对象。<code>callback</code> : 异步提交完成后的回调函数。</td></tr><tr><td><code>commitAsync(final Iterable<SubscriptionMessage> messages, final AsyncCommitCallback callback)</code></td><td>异步提交多条消息并指定回调函数。</td><td><code>messages</code> : 需要提交的消息集合。<code>callback</code> : 异步提交完成后的回调函数。</td></tr></tbody></table><h5 id="subscriptionpushconsumer" tabindex="-1"><a class="header-anchor" href="#subscriptionpushconsumer"><span>SubscriptionPushConsumer</span></a></h5><table><thead><tr><th><strong>函数名</strong></th><th><strong>说明</strong></th><th><strong>参数</strong></th></tr></thead><tbody><tr><td><code>open()</code></td><td>打开消费者连接，启动消息消费，提交自动轮询工作器。</td><td>无</td></tr><tr><td><code>close()</code></td><td>关闭消费者连接，停止消息消费。</td><td>无</td></tr><tr><td><code>toString()</code></td><td>返回消费者对象的核心配置信息。</td><td>无</td></tr><tr><td><code>coreReportMessage()</code></td><td>获取消费者核心配置的键值对表示形式。</td><td>无</td></tr><tr><td><code>allReportMessage()</code></td><td>获取消费者所有配置的键值对表示形式。</td><td>无</td></tr><tr><td><code>buildPushConsumer()</code></td><td>通过 <code>Builder</code> 构建 <code>SubscriptionPushConsumer</code> 实例。</td><td>无</td></tr><tr><td><code>ackStrategy(final AckStrategy ackStrategy)</code></td><td>配置消费者的消息确认策略。</td><td><code>ackStrategy</code>: 指定的消息确认策略。</td></tr><tr><td><code>consumeListener(final ConsumeListener consumeListener)</code></td><td>配置消费者的消息消费逻辑。</td><td><code>consumeListener</code>: 消费者接收消息时的处理逻辑。</td></tr><tr><td><code>autoPollIntervalMs(final long autoPollIntervalMs)</code></td><td>配置自动轮询的时间间隔。</td><td><code>autoPollIntervalMs</code> : 自动轮询的间隔时间，单位为毫秒。</td></tr><tr><td><code>autoPollTimeoutMs(final long autoPollTimeoutMs)</code></td><td>配置自动轮询的超时时间。</td><td><code>autoPollTimeoutMs</code>: 自动轮询的超时时间，单位为毫秒。</td></tr></tbody></table></div><!----><!----><!----></div><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a class="auto-link external-link vp-meta-label" href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/V1.3.x/API/Programming-Data-Subscription.md" aria-label="发现错误？在 GitHub 上编辑此页" rel="noopener noreferrer" target="_blank"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon" name="edit"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">最近更新: </span><time class="vp-meta-info" datetime="2025-04-22T04:18:37.000Z" data-allow-mismatch>2025/4/22 04:18</time></div><!----></div></footer><nav class="vp-page-nav"><a class="route-link auto-link prev" href="/zh/UserGuide/V1.3.x/API/Programming-Java-Native-API.html" aria-label="Java原生API"><div class="hint"><span class="arrow start"></span>上一页</div><div class="link"><!---->Java原生API</div></a><!----></nav><!----><!----><!--]--></main><!--]--><footer class="site-footer"><span id="doc-version" style="display:none;">V1.3.x</span><p class="copyright-text">版权所有 © 2026 Apache软件基金会。 |
| Apache IoTDB，IoTDB，Apache，Apache 羽毛标志和 Apache IoTDB 项目标志是 Apache 软件基金会在所有国家的注册商标或商标</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>有问题吗？</strong> 在 QQ、微信或 Slack 上联系我们。 <a href="https://github.com/apache/iotdb/issues/1995">立即加入社区</a></p></footer></div><!--]--><!--]--><!--[--><!----><!--]--><!--]--></div> |
| <script type="module" src="/assets/app-pmkzp6TS.js" defer></script> |
| </body> |
| </html> |
