screenshot

工作流概述

这是一个包含10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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{
  "id": "105",
  "name": "screenshot",
  "nodes": [
    {
      "name": "On clicking 'execute'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        440,
        580
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "name": "Create Web + Email Item",
      "type": "n8n-nodes-base.functionItem",
      "position": [
        630,
        580
      ],
      "parameters": {
        "functionCode": "item.website = \"https://uproc.io\";
item.email = \"miquel@uproc.io\";

return item;"
      },
      "typeVersion": 1
    },
    {
      "name": "Send Email",
      "type": "n8n-nodes-base.awsSes",
      "position": [
        1660,
        600
      ],
      "parameters": {
        "body": "=Hi,
<br><br>
These are your screenshots:<br>
<table border=\"0\">
<tr>
<th>Simple screenshot</th><th>Fullpage screenshot</th>
<tr>
<td style=\"vertical-align: top; text-align: center\"><img src=\"{{$node[\"Generate Screenshot\"].json[\"message\"][\"result\"]}}\" width=\"320\"></td>
<td style=\"vertical-align: top; text-align: center\"><img src=\"{{$node[\"Generate FullPage\"].json[\"message\"][\"result\"]}}\" width=\"320\"></td>
</tr>
</table>
<br><br>
Thank you!",
        "subject": "Your screenshots!",
        "fromEmail": "miquel@uproc.io",
        "isBodyHtml": true,
        "toAddresses": [
          "={{$node[\"Create Web + Email Item\"].json[\"email\"]}}"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "aws": "ses"
      },
      "typeVersion": 1
    },
    {
      "name": "Generate FullPage",
      "type": "n8n-nodes-base.uproc",
      "position": [
        850,
        510
      ],
      "parameters": {
        "url": "={{$node[\"Create Web + Email Item\"].json[\"website\"]}}",
        "tool": "getUrlScreenshot",
        "group": "image",
        "width": "640",
        "fullpage": "yes",
        "additionalOptions": {}
      },
      "credentials": {
        "uprocApi": "miquel-uproc"
      },
      "typeVersion": 1
    },
    {
      "name": "Generate Screenshot",
      "type": "n8n-nodes-base.uproc",
      "position": [
        840,
        680
      ],
      "parameters": {
        "url": "={{$node[\"Create Web + Email Item\"].json[\"website\"]}}",
        "tool": "getUrlScreenshot",
        "group": "image",
        "width": "640",
        "fullpage": "no",
        "additionalOptions": {}
      },
      "credentials": {
        "uprocApi": "miquel-uproc"
      },
      "typeVersion": 1
    },
    {
      "name": "Get File",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1050,
        510
      ],
      "parameters": {
        "url": "={{$node[\"Generate FullPage\"].json[\"message\"][\"result\"]}}",
        "options": {},
        "responseFormat": "file",
        "allowUnauthorizedCerts": true
      },
      "typeVersion": 1
    },
    {
      "name": "Get File1",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1050,
        680
      ],
      "parameters": {
        "url": "={{$node[\"Generate Screenshot\"].json[\"message\"][\"result\"]}}",
        "options": {},
        "responseFormat": "file",
        "allowUnauthorizedCerts": true
      },
      "typeVersion": 1
    },
    {
      "name": "Merge",
      "type": "n8n-nodes-base.merge",
      "position": [
        1460,
        600
      ],
      "parameters": {
        "mode": "passThrough"
      },
      "typeVersion": 1
    },
    {
      "name": "Upload Screenshot",
      "type": "n8n-nodes-base.dropbox",
      "position": [
        1270,
        680
      ],
      "parameters": {
        "path": "/screenshots/sample.png",
        "binaryData": true
      },
      "credentials": {
        "dropboxApi": "dropbox-miquel"
      },
      "typeVersion": 1
    },
    {
      "name": "Upload fullpage",
      "type": "n8n-nodes-base.dropbox",
      "position": [
        1270,
        510
      ],
      "parameters": {
        "path": "/screenshots/sample_fullpage.png",
        "binaryData": true
      },
      "credentials": {
        "dropboxApi": "dropbox-miquel"
      },
      "typeVersion": 1
    }
  ],
  "active": false,
  "settings": {},
  "connections": {
    "Merge": {
      "main": [
        [
          {
            "node": "Send Email",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get File": {
      "main": [
        [
          {
            "node": "Upload fullpage",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get File1": {
      "main": [
        [
          {
            "node": "Upload Screenshot",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Upload fullpage": {
      "main": [
        [
          {
            "node": "Merge",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Generate FullPage": {
      "main": [
        [
          {
            "node": "Get File",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Upload Screenshot": {
      "main": [
        [
          {
            "node": "Merge",
            "type": "main",
            "index": 1
          }
        ]
      ]
    },
    "Generate Screenshot": {
      "main": [
        [
          {
            "node": "Get File1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "On clicking 'execute'": {
      "main": [
        [
          {
            "node": "Create Web + Email Item",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Create Web + Email Item": {
      "main": [
        [
          {
            "node": "Generate FullPage",
            "type": "main",
            "index": 0
          },
          {
            "node": "Generate Screenshot",
            "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
  • Functionitem
  • Awsses
  • Uproc
  • Httprequest

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