Capture Website Screenshots with Bright Data Web Unlocker and Save to Disk

工作流概述

这是一个包含6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

下载
{
  "id": "1U5Jf4NMQEw9LtxY",
  "meta": {
    "instanceId": "885b4fb4a6a9c2cb5621429a7b972df0d05bb724c20ac7dac7171b62f1c7ef40"
  },
  "name": "Capture Website Screenshots with Bright Data Web Unlocker and Save to Disk",
  "tags": [
    {
      "id": "Kujft2FOjmOVQAmJ",
      "name": "Engineering",
      "createdAt": "2025-04-09T01:31:00.558Z",
      "updatedAt": "2025-04-09T01:31:00.558Z"
    }
  ],
  "nodes": [
    {
      "id": "d61cb066-1d5f-47d5-a4dd-4534f3d3c6d8",
      "name": "When clicking ‘Test workflow’",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -520,
        -160
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "eb99305b-0375-4cdd-8682-637d281598a0",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -540,
        -500
      ],
      "parameters": {
        "width": 360,
        "height": 260,
        "content": "## Note

The \"**Set URL, Filename and Bright Data Zone**\" node must be updated with the appropriate url, file name and **Bright Data Proxies & Infrastructure** zone.

The \"**Write a file to disk**\" node has the location to download the website screenshot. Please make sure to set the path"
      },
      "typeVersion": 1
    },
    {
      "id": "205f64e9-5b31-4c76-912a-307eccde159e",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -160,
        -240
      ],
      "parameters": {
        "color": 4,
        "width": 260,
        "height": 280,
        "content": "## Website Screenshot"
      },
      "typeVersion": 1
    },
    {
      "id": "e7705941-2ae8-4c38-93cb-2cb865314872",
      "name": "Write a file to disk",
      "type": "n8n-nodes-base.readWriteFile",
      "position": [
        140,
        -160
      ],
      "parameters": {
        "options": {},
        "fileName": "={{ \"c:\\\"+ $json.filename }}",
        "operation": "write",
        "dataPropertyName": "={{ $json.filename }}"
      },
      "typeVersion": 1
    },
    {
      "id": "167ff255-da5b-43c1-a22f-e00c4cc166d8",
      "name": "Capture a screenshot",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -80,
        -160
      ],
      "parameters": {
        "url": "https://api.brightdata.com/request",
        "method": "POST",
        "options": {
          "response": {
            "response": {
              "responseFormat": "file",
              "outputPropertyName": "={{ $json.filename }}"
            }
          },
          "allowUnauthorizedCerts": true
        },
        "sendBody": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "bodyParameters": {
          "parameters": [
            {
              "name": "zone",
              "value": "={{ $json.zone }}"
            },
            {
              "name": "url",
              "value": "={{ $json.url }}"
            },
            {
              "name": "format",
              "value": "raw"
            },
            {
              "name": "data_format",
              "value": "screenshot"
            }
          ]
        },
        "genericAuthType": "httpHeaderAuth",
        "headerParameters": {
          "parameters": [
            {}
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "kdbqXuxIR8qIxF7y",
          "name": "Header Auth account"
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "1c5c3d72-f20d-4d06-a6f2-461d043c4a01",
      "name": "Set URL, Filename and Bright Data Zone",
      "type": "n8n-nodes-base.set",
      "position": [
        -300,
        -160
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "c9de0c3e-609a-4e87-b6ab-b4312be026a9",
              "name": "url",
              "type": "string",
              "value": "https://dev.to/"
            },
            {
              "id": "408ed65a-0d66-4f98-b2eb-0d5e066e3250",
              "name": "filename",
              "type": "string",
              "value": "devto.png"
            },
            {
              "id": "ee10fcb0-a610-4987-8a4e-dfab077aee0e",
              "name": "zone",
              "type": "string",
              "value": "web_unlocker1"
            }
          ]
        }
      },
      "typeVersion": 3.4
    }
  ],
  "active": false,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "d3ae63f2-efcf-478b-aadf-8a3fac2af02a",
  "connections": {
    "Capture a screenshot": {
      "main": [
        [
          {
            "node": "Write a file to disk",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When clicking ‘Test workflow’": {
      "main": [
        [
          {
            "node": "Set URL, Filename and Bright Data Zone",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Set URL, Filename and Bright Data Zone": {
      "main": [
        [
          {
            "node": "Capture a 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
  • Stickynote
  • Readwritefile
  • Httprequest
  • Set

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