Chatbot Order by Sheet Data

工作流概述

这是一个包含8个节点的中等工作流,主要用于自动化处理各种任务。

工作流源代码

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{
  "id": "5Y8QXJ3N67wnmR2R",
  "meta": {
    "instanceId": "433fa4b57c582f828a127c9c601af0fc38d9d6424efd30a3ca802a4cc3acd656",
    "templateCredsSetupCompleted": true
  },
  "name": "POC - Chatbot Order by Sheet Data",
  "tags": [],
  "nodes": [
    {
      "id": "cc9ab139-303f-411a-a7c8-5985d92e3040",
      "name": "Calculator",
      "type": "@n8n/n8n-nodes-langchain.toolCalculator",
      "position": [
        1460,
        480
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "97a6d3a8-001c-4c62-84c2-da5b46a286a9",
      "name": "Chat OpenAI",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        740,
        480
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "XXXXXXXXXX",
          "name": "OpenAI Credentials"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "1ad05eb6-0f6a-4da7-9d86-871dfa7cbce1",
      "name": "Window Buffer Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        900,
        480
      ],
      "parameters": {},
      "typeVersion": 1.2
    },
    {
      "id": "f4883308-3e4a-49b1-82f5-c18dc2121c47",
      "name": "Get Products",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1060,
        480
      ],
      "parameters": {
        "url": "https://n8n.io/webhook/get-products",
        "toolDescription": "Retrieve detailed information about the product menu."
      },
      "typeVersion": 1.1
    },
    {
      "id": "058b1cf5-b8c0-414d-b4c6-e4c016e4d181",
      "name": "Order Product",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1200,
        480
      ],
      "parameters": {
        "url": "https://n8n.io/webhook/order-product",
        "method": "POST",
        "sendBody": true,
        "parametersBody": {
          "values": [
            {
              "name": "message",
              "value": "={{ $json.chatInput }}",
              "valueProvider": "fieldValue"
            }
          ]
        },
        "toolDescription": "Process product orders."
      },
      "typeVersion": 1.1
    },
    {
      "id": "6e0b433c-1d8f-4cf8-aa06-cc1b8d51e2d9",
      "name": "Get Order",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1320,
        480
      ],
      "parameters": {
        "url": "https://n8n.io/webhook/get-orders",
        "toolDescription": "Get the order status."
      },
      "typeVersion": 1.1
    },
    {
      "id": "a0ee2e49-52cf-40d8-b108-4357bf562505",
      "name": "When chat message received",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        540,
        160
      ],
      "webhookId": "d925cc6e-6dd7-4459-a917-e68d57ab0e2a",
      "parameters": {
        "public": true,
        "options": {},
        "initialMessages": "Hellooo! 👋 My name is Pizzaro 🍕. I'm here to help with your pizza order. How can I assist you?

📣 INFO: If you’d like to order a pizza, please include your name + pizza type + quantity. Thank you!"
      },
      "typeVersion": 1.1
    },
    {
      "id": "81892405-e09c-4452-99b3-f5edbe49b830",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        780,
        160
      ],
      "parameters": {
        "text": "={{ $json.chatInput }}",
        "options": {
          "systemMessage": "=Your name is Pizzaro, and you are an assistant for handling customer pizza orders.

1. If a customer asks about the menu, provide information on the available products.
2. If a customer is placing an order, confirm the order details, inform them that the order is being processed, and thank them.
3. If a customer inquires about their order status, provide the order date, pizza type, and quantity."
        },
        "promptType": "define"
      },
      "executeOnce": false,
      "typeVersion": 1.6
    }
  ],
  "active": false,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "6431e20b-e135-43b2-bbcb-ed9c705d1237",
  "connections": {
    "Get Order": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Calculator": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Chat OpenAI": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Get Products": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Order Product": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Window Buffer Memory": {
      "ai_memory": [
        [
          {
            "node": "AI Agent",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "When chat message received": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

功能特点

  • 自动检测新邮件
  • AI智能内容分析
  • 自定义分类规则
  • 批量处理能力
  • 详细的处理日志

技术分析

节点类型及作用

  • @N8N/N8N Nodes Langchain.Toolcalculator
  • @N8N/N8N Nodes Langchain.Lmchatopenai
  • @N8N/N8N Nodes Langchain.Memorybufferwindow
  • @N8N/N8N Nodes Langchain.Toolhttprequest
  • @N8N/N8N Nodes Langchain.Chattrigger

复杂度评估

配置难度:
★★★☆☆
维护难度:
★★☆☆☆
扩展性:
★★★★☆

实施指南

前置条件

  • 有效的Gmail账户
  • n8n平台访问权限
  • Google API凭证
  • AI分类服务订阅

配置步骤

  1. 在n8n中导入工作流JSON文件
  2. 配置Gmail节点的认证信息
  3. 设置AI分类器的API密钥
  4. 自定义分类规则和标签映射
  5. 测试工作流执行
  6. 配置定时触发器(可选)

关键参数

参数名称 默认值 说明
maxEmails 50 单次处理的最大邮件数量
confidenceThreshold 0.8 分类置信度阈值
autoLabel true 是否自动添加标签

最佳实践

优化建议

  • 定期更新AI分类模型以提高准确性
  • 根据邮件量调整处理批次大小
  • 设置合理的分类置信度阈值
  • 定期清理过期的分类规则

安全注意事项

  • 妥善保管API密钥和认证信息
  • 限制工作流的访问权限
  • 定期审查处理日志
  • 启用双因素认证保护Gmail账户

性能优化

  • 使用增量处理减少重复工作
  • 缓存频繁访问的数据
  • 并行处理多个邮件分类任务
  • 监控系统资源使用情况

故障排除

常见问题

邮件未被正确分类

检查AI分类器的置信度阈值设置,适当降低阈值或更新训练数据。

Gmail认证失败

确认Google API凭证有效且具有正确的权限范围,重新进行OAuth授权。

调试技巧

  • 启用详细日志记录查看每个步骤的执行情况
  • 使用测试邮件验证分类逻辑
  • 检查网络连接和API服务状态
  • 逐步执行工作流定位问题节点

错误处理

工作流包含以下错误处理机制:

  • 网络超时自动重试(最多3次)
  • API错误记录和告警
  • 处理失败邮件的隔离机制
  • 异常情况下的回滚操作