LINE Assistant with Google Calendar and Gmail Integration
工作流概述
这是一个包含14个节点的复杂工作流，主要用于自动化处理各种任务。
工作流源代码
{
"id": "Z5OgwYfK4reCTv9y",
"meta": {
"instanceId": "c59c4acfed171bdc864e7c432be610946898c3ee271693e0303565c953d88c1d"
},
"name": "LINE Assistant with Google Calendar and Gmail Integration",
"tags": [],
"nodes": [
{
"id": "9e1e1c11-f406-47de-8f65-9669cf078d3d",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
-1140,
120
],
"parameters": {
"text": "={{ $json.body.events[0].message.text }}",
"options": {
"systemMessage": "=You are a helpful assistant.
Here is the current date {{ $now }}"
},
"promptType": "define"
},
"typeVersion": 1.7
},
{
"id": "fa722820-8804-47da-bb21-02c0d2b5d665",
"name": "Window Buffer Memory",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
-1020,
580
],
"parameters": {
"sessionKey": "={{ $json.body.events[0].source.userId }}",
"sessionIdType": "customKey"
},
"typeVersion": 1.3
},
{
"id": "5149b91a-5934-4037-a444-dfdb93d0cd16",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-1180,
580
],
"parameters": {
"options": {}
},
"typeVersion": 1
},
{
"id": "211a120d-d65f-4708-adc2-66dc8f4a40d6",
"name": "Wikipedia",
"type": "@n8n/n8n-nodes-langchain.toolWikipedia",
"position": [
-360,
380
],
"parameters": {},
"typeVersion": 1
},
{
"id": "0e03137d-0300-47a4-bbd8-03c87c93d6e2",
"name": "OpenAI",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
-780,
120
],
"parameters": {
"modelId": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini",
"cachedResultName": "GPT-4O-MINI"
},
"options": {},
"messages": {
"values": [
{
"role": "system",
"content": "Your task is to extract and condense the answer into an easily readable format. Don't provide a link or details such as \"ดูเพิ่มเติม\" or \"ดูรายละเอียดได้ที่นี่.\""
},
{
"content": "={{ $json.output }}"
}
]
}
},
"typeVersion": 1.7
},
{
"id": "8c6e96bc-aa9d-44d1-b7ce-6bb85b175cf1",
"name": "Switch Between Text and Others",
"type": "n8n-nodes-base.switch",
"position": [
-1820,
640
],
"parameters": {
"rules": {
"values": [
{
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $('Line Receiving').item.json.body.events[0].message.type }}",
"rightValue": "text"
}
]
}
}
]
},
"options": {
"fallbackOutput": "extra"
}
},
"typeVersion": 3.2
},
{
"id": "721a5e5e-3a9a-435e-9302-03ca7cf64fb7",
"name": "Line Receiving",
"type": "n8n-nodes-base.webhook",
"position": [
-2320,
560
],
"webhookId": "********-****-****-****-************",
"parameters": {
"path": "linechatbotagent",
"options": {},
"httpMethod": "POST"
},
"typeVersion": 2
},
{
"id": "2b47f8f1-a501-4204-9221-c838edfceae7",
"name": "Error Handling from AI Response",
"type": "n8n-nodes-base.switch",
"position": [
-220,
100
],
"parameters": {
"rules": {
"values": [
{
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.message.content }}",
"rightValue": "={{ $json.output }}"
}
]
}
}
]
},
"options": {
"fallbackOutput": "extra"
}
},
"typeVersion": 3.2
},
{
"id": "99218c08-5ec7-44b9-a795-e98f1ec4aab3",
"name": "Text Cleansing",
"type": "n8n-nodes-base.set",
"position": [
0,
0
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "********-****-****-****-************",
"name": "message.content",
"type": "string",
"value": "={{ $json.message.content.replaceAll(\"\n\",\"\\n\").replaceAll(\"\n\",\"\").removeMarkdown().removeTags().replaceAll('\"',\"\") }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "39476f44-9dc7-4c72-a857-9e79f85ccd72",
"name": "Line Answering (Error Case)",
"type": "n8n-nodes-base.httpRequest",
"position": [
760,
680
],
"parameters": {
"url": "https://api.line.me/v2/bot/message/reply",
"method": "POST",
"options": {},
"jsonBody": "={
\"replyToken\": \"{{ $('Line Receiving').item.json.body.events[0].replyToken }}\",
\"messages\": [
{
\"type\": \"text\",
\"text\": \"กรุณาส่งอย่างอื่นเถอะนะเตงอัว\"
}
]}",
"sendBody": true,
"jsonHeaders": "{
\"Authorization\": \"Bearer ****************************************\",
\"Content-Type\": \"application/json\"
}",
"sendHeaders": true,
"specifyBody": "json",
"specifyHeaders": "json"
},
"typeVersion": 4.2
},
{
"id": "a7f8837d-c21b-457d-ad8b-b0b69e3c1ba7",
"name": "Line Answering (Ordinary Case)",
"type": "n8n-nodes-base.httpRequest",
"position": [
600,
120
],
"parameters": {
"url": "https://api.line.me/v2/bot/message/reply",
"method": "POST",
"options": {},
"jsonBody": "={
\"replyToken\": \"{{ $('Line Receiving').item.json.body.events[0].replyToken }}\",
\"messages\": [
{
\"type\": \"text\",
\"text\": \"{{ $json.message.content }}\"
}
]}",
"sendBody": true,
"jsonHeaders": "{
\"Authorization\": \"Bearer ****************************************\",
\"Content-Type\": \"application/json\"
}",
"sendHeaders": true,
"specifyBody": "json",
"specifyHeaders": "json"
},
"typeVersion": 4.2
},
{
"id": "3280f331-0130-41c2-a581-14feccf76514",
"name": "Google Calendar Create",
"type": "n8n-nodes-base.googleCalendarTool",
"position": [
-640,
400
],
"parameters": {
"end": "= {{ $fromAI(\"createenddate\",\"end date and time to create event\") }}",
"start": "= {{ $fromAI(\"createstartdate\",\"start date and time to create event\") }}",
"calendar": {
"__rl": true,
"mode": "list",
"value": "***********@gmail.com",
"cachedResultName": "***********@gmail.com"
},
"additionalFields": {
"summary": "={{ $fromAI(\"event_name\",\"Name of an Event\") }}"
}
},
"credentials": {
"googleCalendarOAuth2Api": {
"id": "0PzHsuCKdTBU5E2Q",
"name": "Google Calendar account"
}
},
"typeVersion": 1.2
},
{
"id": "7701895f-9781-41b9-aa80-8440e4e9cbd3",
"name": "Google Calendar Read",
"type": "n8n-nodes-base.googleCalendarTool",
"position": [
-880,
580
],
"parameters": {
"limit": 5,
"options": {
"timeMax": "={{ $fromAI(\"enddate\",\"end date user mentioned about\") }}",
"timeMin": "={{ $fromAI(\"startdate\",\"start date user mentioned about\") }}"
},
"calendar": {
"__rl": true,
"mode": "list",
"value": "***********@gmail.com",
"cachedResultName": "***********@gmail.com"
},
"operation": "getAll"
},
"credentials": {
"googleCalendarOAuth2Api": {
"id": "0PzHsuCKdTBU5E2Q",
"name": "Google Calendar account"
}
},
"typeVersion": 1.2
},
{
"id": "881daa7f-cf9a-4d1f-8235-55d206925ac0",
"name": "Gmail Read",
"type": "n8n-nodes-base.gmailTool",
"position": [
-700,
560
],
"webhookId": "********-****-****-****-************",
"parameters": {
"limit": 5,
"filters": {
"receivedAfter": "={{ $fromAI(\"receiveddate\",\"the date email received\") }}"
},
"operation": "getAll"
},
"credentials": {
"gmailOAuth2": {
"id": "cZmU8EQya5OtXVgQ",
"name": "Gmail account"
}
},
"typeVersion": 2.1
}
],
"active": false,
"pinData": {
"Line Receiving": [
{
"json": {
"body": {
"events": [
{
"mode": "active",
"type": "message",
"source": {
"type": "user",
"userId": "****************************************"
},
"message": {
"id": "539986086979174564",
"text": "",
"type": "text",
"quoteToken": "****************************************"
},
"timestamp": 1734688093030,
"replyToken": "********************************",
"webhookEventId": "01JFHQFD2KQE4BA5VVW32YDBZV",
"deliveryContext": {
"isRedelivery": false
}
}
],
"destination": "****************************************"
},
"query": {},
"params": {},
"headers": {
"host": "n8n-9pul.onrender.com",
"cf-ray": "****************",
"rndr-id": "****************",
"cdn-loop": "cloudflare; loops=1; subreqs=1",
"cf-ew-via": "15",
"cf-worker": "onrender.com",
"cf-visitor": "{\"scheme\":\"https\"}",
"user-agent": "LineBotWebhook/2.0",
"cf-ipcountry": "JP",
"content-type": "application/json; charset=utf-8",
"content-length": "619",
"true-client-ip": "***.***.***.**",
"accept-encoding": "gzip, br",
"x-forwarded-for": "***.***.***.***, ***.***.***.**",
"x-request-start": "1734688093431195",
"cf-connecting-ip": "***.***.***.**",
"render-proxy-ttl": "4",
"x-line-signature": "****************************************",
"x-forwarded-proto": "https"
},
"webhookUrl": "https://n8n-9pul.onrender.com/webhook/linechatbotagent",
"executionMode": "production"
}
}
]
},
"settings": {
"executionOrder": "v1"
},
"versionId": "14065639-6706-4161-9380-4f4dde6eb501",
"connections": {
"OpenAI": {
"main": [
[
{
"node": "Error Handling from AI Response",
"type": "main",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "OpenAI",
"type": "main",
"index": 0
}
]
]
},
"Wikipedia": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Gmail Read": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Line Receiving": {
"main": [
[
{
"node": "Switch Between Text and Others",
"type": "main",
"index": 0
}
]
]
},
"Text Cleansing": {
"main": [
[
{
"node": "Line Answering (Ordinary Case)",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Google Calendar Read": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Window Buffer Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"Google Calendar Create": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Switch Between Text and Others": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
],
[
{
"node": "Line Answering (Error Case)",
"type": "main",
"index": 0
}
]
]
},
"Error Handling from AI Response": {
"main": [
[
{
"node": "Text Cleansing",
"type": "main",
"index": 0
}
],
[
{
"node": "Line Answering (Error Case)",
"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.Agent
- @N8N/N8N Nodes Langchain.Memorybufferwindow
- @N8N/N8N Nodes Langchain.Lmchatopenai
- @N8N/N8N Nodes Langchain.Toolwikipedia
- @N8N/N8N Nodes Langchain.Openai
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
- 在n8n中导入工作流JSON文件
- 配置Gmail节点的认证信息
- 设置AI分类器的API密钥
- 自定义分类规则和标签映射
- 测试工作流执行
- 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