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【OpenClaw 从入门到精通】第 30 篇：Canvas 实战场景

本系列定位：零基础入门，从安装配置到高级架构全覆盖。

本篇你将学到

• 四个 Canvas 实战场景
• 数据可视化、架构图、交互表单、监控看板

一、数据可视化看板

你：分析本月的销售数据，在 Canvas 中展示 OpenClaw： 🔧 read: ~/data/sales.json 🔧 canvas: render { type: "dashboard", title: "销售月报", widgets: [ { type: "gauge", label: "月度目标", value: 85, max: 100, unit: "%" }, { type: "chart", chartType: "line", title: "日销售额趋势", data: [...] }, { type: "chart", chartType: "pie", title: "品类占比", data: [...] }, { type: "table", title: "Top 5 商品", columns: [...], rows: [...] } ] }

下面是数据可视化看板的完整工作流程：

二、架构图绘制

你：画一个微服务架构图 OpenClaw： 🔧 canvas: render { type: "diagram", title: "微服务架构", nodes: [ { id: "gateway", label: "API Gateway", x: 400, y: 50 }, { id: "auth", label: "Auth Service", x: 200, y: 200 }, { id: "order", label: "Order Service", x: 400, y: 200 }, { id: "product", label: "Product Service", x: 600, y: 200 }, { id: "db", label: "PostgreSQL", x: 400, y: 350 } ], edges: [ { from: "gateway", to: "auth" }, { from: "gateway", to: "order" }, { from: "gateway", to: "product" }, { from: "order", to: "db" }, { from: "product", to: "db" } ] }

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下面是微服务架构图的节点关系与数据流向：

三、交互式监控看板

你：做一个服务器监控看板，每 30 秒更新 OpenClaw： 🔧 canvas: render { type: "dashboard", title: "服务器监控", refresh: 30, widgets: [ { type: "gauge", label: "CPU", value: "live:cpu_usage", max: 100 }, { type: "gauge", label: "Memory", value: "live:mem_usage", max: 100 }, { type: "gauge", label: "Disk", value: "live:disk_usage", max: 100 }, { type: "status", label: "PostgreSQL", value: "live:pg_status" }, { type: "status", label: "Redis", value: "live:redis_status" } ] } → 看板每 30 秒自动刷新数据

下面是监控看板的实时数据采集与刷新流程：

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四、Canvas + 通道协同

# 从 Telegram 发起 → Canvas 在 Dashboard 展示 你（Telegram）：分析项目代码质量，在 Canvas 中展示报告 Agent： 🔧 分析代码... 🔧 canvas: render { type: "report", ... } 在 Telegram 回复：📊 报告已在 Dashboard Canvas 中展示 在 Dashboard：Canvas 渲染可视化报告

下面是 Telegram 通道与 Canvas 看板的协同工作流程：

模块七总结

下篇预告

第 31 篇：Gateway 运维 — 部署、日志与健康

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