Get Comments from Facebook Page
工作流概述
这是一个包含11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
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"name": "Get Comments from Facebook Page",
"tags": [],
"nodes": [
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"id": "a9c1f0fb-396e-4c36-92d4-ec3eeb36c644",
"name": "When clicking ‘Test workflow’",
"type": "n8n-nodes-base.manualTrigger",
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"parameters": {},
"typeVersion": 1
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{
"id": "9031abae-aaa0-4602-8fb1-29e89c73f3e8",
"name": "Split Out Comments",
"type": "n8n-nodes-base.splitOut",
"position": [
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"parameters": {
"include": "allOtherFields",
"options": {},
"fieldToSplitOut": "data"
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{
"id": "c8216862-1d39-47e6-b59e-cf1fb17f7226",
"name": "Filter Out Null Comments",
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"leftValue": "={{ $json.data }}",
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{
"id": "076c0619-21de-48df-83fa-f2ba5f8be2e2",
"name": "Select Result Field",
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"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "8065ebf7-4daf-44dc-ac2c-95cce2063166",
"name": "Post_id",
"type": "string",
"value": "={{ $json.id }}"
},
{
"id": "b0984969-2f90-4fa9-8e32-8d7c76750e83",
"name": "Post_created_time",
"type": "string",
"value": "={{ $json.created_time.toDateTime() }}"
},
{
"id": "5efb3600-9887-40d2-8350-9d3b02a49775",
"name": "Post_message",
"type": "string",
"value": "={{ $json.message }}"
},
{
"id": "f469cdbc-16ba-4018-8b9c-7933dff7c9ae",
"name": "Comment_id",
"type": "string",
"value": "={{ $json.data.id }}"
},
{
"id": "a028828c-5054-45f0-bf1e-4ff1c9884b0a",
"name": "Comment_created_time",
"type": "string",
"value": "={{ $json.data.created_time.toDateTime()}}"
},
{
"id": "c40ea11c-762c-4e3c-9eda-a152fa7ec9c9",
"name": "Comment_message",
"type": "string",
"value": "={{ $json.data.message }}"
},
{
"id": "53fcd92c-cdaf-4663-9351-90da88cb13f7",
"name": "Comment_from",
"type": "string",
"value": "={{ $json.data.from ? $json.data.from.name : \"\"}}"
}
]
},
"includeOtherFields": true
},
"typeVersion": 3.4
},
{
"id": "508cb3fa-5246-415c-97f8-c4f6575e45d5",
"name": "Split Out Posts",
"type": "n8n-nodes-base.splitOut",
"position": [
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],
"parameters": {
"options": {},
"fieldToSplitOut": "data"
},
"typeVersion": 1
},
{
"id": "ff6b3011-fd82-454e-a8f5-6b1a91221d0b",
"name": "Facebook Graph API : Get Post from Page",
"type": "n8n-nodes-base.facebookGraphApi",
"position": [
1120,
240
],
"parameters": {
"node": "={{ $json.FB_Page_Id }}/feed",
"options": {
"queryParameters": {
"parameter": [
{
"name": "limit",
"value": "={{ $json.Number_of_Latest_Posts }}"
}
]
}
},
"graphApiVersion": "v20.0"
},
"credentials": {
"facebookGraphApi": {
"id": "Q0En38jY9jxkafFz",
"name": "Facebook Graph account"
}
},
"typeVersion": 1
},
{
"id": "b8464152-d35f-44dc-9a2a-56a128b670e9",
"name": "Facebook : Get Each Post Comments",
"type": "n8n-nodes-base.facebookGraphApi",
"onError": "continueErrorOutput",
"position": [
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],
"parameters": {
"edge": "comments",
"node": "={{ $json.id }}",
"options": {
"fields": {
"field": [
{
"name": "id,from,message,created_time,comment_count"
}
]
},
"queryParameters": {
"parameter": [
{
"name": "order",
"value": "reverse_chronological"
}
]
}
},
"graphApiVersion": "v20.0"
},
"credentials": {
"facebookGraphApi": {
"id": "Q0En38jY9jxkafFz",
"name": "Facebook Graph account"
}
},
"typeVersion": 1
},
{
"id": "470bc675-fab6-45d8-afe9-05c35576c210",
"name": "Merge Post & Comments",
"type": "n8n-nodes-base.merge",
"position": [
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"parameters": {
"mode": "combine",
"options": {},
"combineBy": "combineByPosition"
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{
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"name": "Reverse Item to Match another Branch",
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"parameters": {
"jsCode": "return items.reverse();
"
},
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{
"id": "02092b77-7ae0-4fc3-8f3c-1c4428d95709",
"name": "Set PageID & Number of Latest Posts",
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"assignments": {
"assignments": [
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"id": "1d70f742-0848-44b1-8dbe-9b125dc046b3",
"name": "Number_of_Latest_Posts",
"type": "number",
"value": 10
},
{
"id": "6744bb50-c34f-429d-8364-da14c9cbaa77",
"name": "FB_Page_Id",
"type": "string",
"value": "219380258240005"
}
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}
},
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"parameters": {
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"height": 358.9292089122457,
"content": "## Set Parameter Here
Set Facebook PageID & Number of Latest Posts to be fetched here
"
},
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],
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"pinData": {},
"settings": {
"executionOrder": "v1"
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"connections": {
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"main": [
[
{
"node": "Facebook : Get Each Post Comments",
"type": "main",
"index": 0
},
{
"node": "Reverse Item to Match another Branch",
"type": "main",
"index": 0
}
]
]
},
"Split Out Comments": {
"main": [
[
{
"node": "Select Result Field",
"type": "main",
"index": 0
}
]
]
},
"Merge Post & Comments": {
"main": [
[
{
"node": "Filter Out Null Comments",
"type": "main",
"index": 0
}
]
]
},
"Filter Out Null Comments": {
"main": [
[
{
"node": "Split Out Comments",
"type": "main",
"index": 0
}
]
]
},
"Facebook : Get Each Post Comments": {
"main": [
[
{
"node": "Merge Post & Comments",
"type": "main",
"index": 0
}
]
]
},
"When clicking ‘Test workflow’": {
"main": [
[
{
"node": "Set PageID & Number of Latest Posts",
"type": "main",
"index": 0
}
]
]
},
"Set PageID & Number of Latest Posts": {
"main": [
[
{
"node": "Facebook Graph API : Get Post from Page",
"type": "main",
"index": 0
}
]
]
},
"Reverse Item to Match another Branch": {
"main": [
[
{
"node": "Merge Post & Comments",
"type": "main",
"index": 1
}
]
]
},
"Facebook Graph API : Get Post from Page": {
"main": [
[
{
"node": "Split Out Posts",
"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
- Manualtrigger
- Splitout
- Filter
- Set
- Facebookgraphapi
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