Extracción de cartas del gobierno tailandés con Mistral OCR
Avanzado
Este es unDocument Extraction, AI Summarizationflujo de automatización del dominio deautomatización que contiene 29 nodos.Utiliza principalmente nodos como If, Set, Merge, Webhook, MistralAi. Extraer datos de cartas gubernamentales tailandesas y almacenar en Google Sheets con Mistral OCR
Requisitos previos
- •Punto final de HTTP Webhook (n8n generará automáticamente)
- •Credenciales de API de Google Drive
- •Pueden requerirse credenciales de autenticación para la API de destino
- •Credenciales de API de Google Sheets
- •Clave de API de OpenAI
Nodos utilizados (29)
Vista previa del flujo de trabajo
Visualización de las conexiones entre nodos, con soporte para zoom y panorámica
Exportar flujo de trabajo
Copie la siguiente configuración JSON en n8n para importar y usar este flujo de trabajo
{
"id": "IwCDobE0PCV4O35E",
"meta": {
"instanceId": "2c12b0b552404dc07af67cd5f092afd21d18c808d4fdabdb04cb4b064195b6fb",
"templateCredsSetupCompleted": true
},
"name": "ThaiLetterWtihMistralOCR_ENG",
"tags": [],
"nodes": [
{
"id": "beb2e565-ce98-4068-9a78-b4a26b85bd80",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-3888,
-32
],
"parameters": {
"width": 261,
"height": 608,
"content": "## LINE Bot Letter OCR Workflow\n\n**Features:**\n- Receive files from LINE and Google Drive\n- OCR using Mistral Document AI\n- Extract invoice information using OpenAI's Information Extractor\n- Automatically log data into Google Sheets\n\n\n**Required Environment Variables:**\n- LINE_CHANNEL_ACCESS_TOKEN\n- GDRIVE_INVOICE_FOLDER_ID \n- MISTRAL_API_KEY\n- GSHEET_ID\n\n\n**Required Credentials:**\n- googleDriveOAuth2Api\n- googleSheetsOAuth2Api"
},
"typeVersion": 1
},
{
"id": "30426fbd-4053-415d-b3b5-fc3dff0b1b82",
"name": "LINE Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
-3568,
176
],
"webhookId": "bf82240d-06be-4f2a-94b0-85d76943a314",
"parameters": {
"path": "webhook-linebot-test",
"options": {},
"httpMethod": "POST"
},
"typeVersion": 2
},
{
"id": "9a8dbc27-67e0-44db-aa45-677ada852e1b",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-3616,
-32
],
"parameters": {
"color": 4,
"width": 200,
"height": 341,
"content": "### LINE Webhook\n\n**Receive data from LINE:**\n- Accepts POST request from LINE Messaging API\n- Extracts `messageId` for downloading file\n\n**Path:** `/line-invoice`\n**Method:** `POST`"
},
"typeVersion": 1
},
{
"id": "2a996f22-ad7f-4c4e-ae64-7e098e2dccda",
"name": "Obtener archivo Line",
"type": "n8n-nodes-base.httpRequest",
"position": [
-3296,
176
],
"parameters": {
"url": "=https://api-data.line.me/v2/bot/message/{{ $json.body.events[0].message.id }}/content",
"options": {
"response": {
"response": {
"responseFormat": "file"
}
}
},
"sendHeaders": true,
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"headerParameters": {
"parameters": [
{}
]
}
},
"credentials": {
"httpHeaderAuth": {
"id": "byY3kI23lMe4ewnM",
"name": "Header Auth account - Maid"
}
},
"typeVersion": 4.2
},
{
"id": "bead3404-66a3-4d15-98d3-ec1cf2eda7a7",
"name": "Establecer datos Line",
"type": "n8n-nodes-base.set",
"position": [
-3072,
176
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "42960a6d-c039-42f7-9658-22e56159b931",
"name": "source",
"type": "string",
"value": "line"
},
{
"id": "a17844e1-5328-42e6-b67f-d3c6886e1d95",
"name": " fileName",
"type": "string",
"value": "={{ $json.body.events[0].message.fileName }}"
},
{
"id": "983bf680-ee70-4c70-8aa9-811cd5b81a04",
"name": "fileId",
"type": "string",
"value": "={{ $('LINE Webhook').item.json.body.events[0].message.id }}"
}
]
},
"includeOtherFields": true
},
"typeVersion": 3.4,
"alwaysOutputData": false
},
{
"id": "399b0815-e925-46de-bc80-9befdbe48739",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-3408,
-32
],
"parameters": {
"color": 4,
"width": 567,
"height": 341,
"content": "### Download File from LINE\n\n**Process:**\n1. Check if message type is \"image\"\n2. Use `messageId` to download the file\n3. Set metadata fields: source, fileName, fileId\n4. Store `fileBinary` for OCR\n\n**LINE API:** \n`https://api-data.line.me/v2/bot/message/{messageId}/content`\n"
},
"typeVersion": 1
},
{
"id": "a066a27e-e10c-4bd4-8663-b9614682e991",
"name": "Disparador Google Drive",
"type": "n8n-nodes-base.googleDriveTrigger",
"position": [
-3344,
336
],
"parameters": {
"event": "fileCreated",
"options": {},
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
},
"triggerOn": "specificFolder",
"folderToWatch": {
"__rl": true,
"mode": "id",
"value": "1hRyZcu2RZsRMvLjl2GKNALzxhgRl8ZKI"
}
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "QVrgALkld7whKIgB",
"name": "Google Drive account - Peakwave"
}
},
"typeVersion": 1
},
{
"id": "f278bb26-dc66-4d55-a2c5-0065775f471b",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-3616,
320
],
"parameters": {
"color": 5,
"width": 776,
"height": 257,
"content": "\n### Google Drive Trigger\n\n**Monitor for new files:**\n- Watch a specific folder in Google Drive\n- Trigger the workflow when a new file is added\n- Supports PDF, JPG, JPEG formats\n\n**Folder ID:** `$env.GDRIVE_INVOICE_FOLDER_ID` \n**Event:** `fileCreated"
},
"typeVersion": 1
},
{
"id": "b85acdcb-66bb-4707-98ca-e91af2a614d2",
"name": "Descargar archivo (Drive)",
"type": "n8n-nodes-base.googleDrive",
"position": [
-3136,
336
],
"parameters": {
"fileId": "={{ $json.id }}",
"options": {},
"operation": "download"
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "QVrgALkld7whKIgB",
"name": "Google Drive account - Peakwave"
}
},
"typeVersion": 3
},
{
"id": "dac53614-da13-4147-992a-f0db91e7bc89",
"name": "Fusionar fuentes de datos",
"type": "n8n-nodes-base.merge",
"position": [
-2768,
256
],
"parameters": {
"mode": "combine",
"options": {},
"combinationMode": "mergeByPosition"
},
"typeVersion": 2.1,
"alwaysOutputData": true
},
{
"id": "fcecfcb9-deb2-489b-a36e-e71c779f0d29",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2832,
-32
],
"parameters": {
"width": 231,
"height": 609,
"content": "### Merge Data Sources\n\n**Combine data from both sources:**\n- LINE: source = \"line\", fileName, fileId, fileBinary\n- Drive: source = \"drive\", fileName, fileId, fileBinary\n\n**Output:** Unified data object for downstream processing \n**Mode:** `combineAll`\n"
},
"typeVersion": 1
},
{
"id": "2b36574f-9c6b-46da-8902-9efbc07667b3",
"name": "Verificar tipo de archivo",
"type": "n8n-nodes-base.if",
"position": [
-2528,
176
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 1,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "or",
"conditions": [
{
"id": "condition1",
"operator": {
"type": "string",
"operation": "regex",
"singleValue": true
},
"leftValue": "={{ $binary.data.mimeType }}",
"rightValue": "^image/(jpg|jpeg|png)$"
}
]
}
},
"typeVersion": 2
},
{
"id": "f5c236db-a54d-4c15-bf40-e9166a552cfc",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2592,
-32
],
"parameters": {
"width": 231,
"height": 341,
"content": "### File Type Check\n\n**Determine file type:**\n- JPG, JPEG → OCR Image Processing\n- PDF → OCR Document Processing\n\n**Regex Pattern:** `.*\\.(jpg|jpeg|png)$`\n\n**True:** Continue to OCR via Mistral \n**False:** Fallback to extract info from filename"
},
"typeVersion": 1
},
{
"id": "c6948c15-9278-4c2b-9d6e-c832e43b75c8",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2352,
-32
],
"parameters": {
"width": 279,
"height": 341,
"content": "### Mistral OCR Image\n\n**OCR using AI:**\n\n**Steps:**\n1. Encode image file to Base64\n2. Send to Mistral OCR node\n3. Receive parsed text from the image"
},
"typeVersion": 1
},
{
"id": "1bfcad59-b68e-47ee-8796-71ee066cf8fa",
"name": "Sticky Note7",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2592,
320
],
"parameters": {
"width": 519,
"height": 261,
"content": "### Mistral OCR Document\n\n**OCR using AI:**\n\n**Steps:**\n1. Encode PDF file to Base64\n2. Send to Mistral OCR node\n3. Receive parsed text from the document"
},
"typeVersion": 1
},
{
"id": "1700e1d6-b00a-4872-96b7-5f46f50cce94",
"name": "Sticky Note8",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2064,
-32
],
"parameters": {
"width": 343,
"height": 341,
"content": "### AI Validation Agent\n\n**Extract and validate data using AI:**\n\n**Validation fields:**\n- book_id\n- subject\n- to\n- ..."
},
"typeVersion": 1
},
{
"id": "d1974977-c464-4b6f-8ad2-d3000b9ccde6",
"name": "Escribir en hoja Google",
"type": "n8n-nodes-base.googleSheets",
"position": [
-1520,
160
],
"parameters": {
"columns": {
"value": {
"to": "={{ $json.output.to }}",
"date": "={{ $json.output.date }}",
"attach": "={{ $json.output.attach }}",
"detail": "={{ $json.output.detail }}",
"book_id": "={{ $json.output.book_id }}",
"subject": "={{ $json.output.subject }}",
"signed_by": "={{ $json.output.signed_by }}",
"download_url": "={{ $json.output.download_url }}",
"contact_email": "={{ $json.output.contact_email }}",
"contact_phone": "={{ $json.output.contact_phone }}",
"signed_by_position": "={{ $json.output.signed_by_position }}"
},
"schema": [
{
"id": "book_id",
"type": "string",
"display": true,
"required": false,
"displayName": "book_id",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "date",
"type": "string",
"display": true,
"required": false,
"displayName": "date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "subject",
"type": "string",
"display": true,
"required": false,
"displayName": "subject",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "to",
"type": "string",
"display": true,
"required": false,
"displayName": "to",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "attach",
"type": "string",
"display": true,
"required": false,
"displayName": "attach",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "detail",
"type": "string",
"display": true,
"required": false,
"displayName": "detail",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "signed_by",
"type": "string",
"display": true,
"required": false,
"displayName": "signed_by",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "signed_by_position",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "signed_by_position",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "contact_phone",
"type": "string",
"display": true,
"required": false,
"displayName": "contact_phone",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "contact_email",
"type": "string",
"display": true,
"required": false,
"displayName": "contact_email",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "download_url",
"type": "string",
"display": true,
"required": false,
"displayName": "download_url",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "append",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1asLDGXnPA4K55RfLDGRkgQzOpnKezDoVibWgnGaGUJ0/edit#gid=0",
"cachedResultName": "Sheet1"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "1asLDGXnPA4K55RfLDGRkgQzOpnKezDoVibWgnGaGUJ0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1asLDGXnPA4K55RfLDGRkgQzOpnKezDoVibWgnGaGUJ0/edit?usp=drivesdk",
"cachedResultName": "n8n_ThaiLetterWithMistralAI"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"id": "0RVWjnYzlWor2bMu",
"name": "Google Sheets account"
}
},
"typeVersion": 4.4
},
{
"id": "05d85bdd-c642-4a45-a2c9-ffcda27c4906",
"name": "Sticky Note9",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1712,
-32
],
"parameters": {
"color": 2,
"width": 391,
"height": 341,
"content": "### Google Sheets Output\n\n**Append structured data to Google Sheets:**\n\n**Columns:**\n- book_id\n- subject\n- to\n...\n\n**Sheet:** `data` \n**Operation:** `append`\n"
},
"typeVersion": 1
},
{
"id": "c51e40ff-0aab-4c99-84e9-dbaa7ecb01bb",
"name": "Responder a LINE",
"type": "n8n-nodes-base.httpRequest",
"position": [
-1456,
336
],
"parameters": {
"url": "https://api.line.me/v2/bot/message/reply",
"method": "POST",
"options": {
"response": {
"response": {
"neverError": true
}
}
},
"jsonBody": "={\n \"replyToken\": \"{{ $('LINE Webhook').item.json.body.events[0].replyToken }}\",\n \"messages\": [\n {\n \"type\": \"text\",\n \"text\": \"✅ บันทึกใบหนังสือเรียบร้อยแล้ว!\\n\\n📋 ข้อมูล:\\n เลขที่: {{ $json.book_id }}\\n เรื่อง: {{ $json.subject }}\\n เรียน: {{ $json.to }}\\n ลงวันที่: {{ $json.date }}\\n จาก: {{ $json.signed_by_position }}\\n\\n\"\n }\n ]\n}",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application/json"
}
]
}
},
"credentials": {
"httpHeaderAuth": {
"id": "byY3kI23lMe4ewnM",
"name": "Header Auth account - Maid"
}
},
"typeVersion": 4.2
},
{
"id": "076fdad3-6c0b-4812-bdb5-8b13550da89c",
"name": "Sticky Note10",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1712,
320
],
"parameters": {
"color": 4,
"width": 391,
"height": 133,
"content": "### LINE Reply\n\n**Send reply message to LINE user:**\n- Confirm invoice has been saved\n- Include extracted details"
},
"typeVersion": 1
},
{
"id": "1a14bc7a-a7ca-468c-a053-aed3a3a71cb2",
"name": "Verificar fuente para respuesta",
"type": "n8n-nodes-base.if",
"position": [
-2016,
448
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 1,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "condition1",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $('Merge Data Sources').item.json.source }}",
"rightValue": "line"
}
]
}
},
"typeVersion": 2
},
{
"id": "54929d5d-2f74-4e71-a06b-47051baefca1",
"name": "Extractor de información",
"type": "@n8n/n8n-nodes-langchain.informationExtractor",
"position": [
-2032,
160
],
"parameters": {
"text": "={{ $json.pages[0].markdown }}",
"options": {
"systemPromptTemplate": "You are an expert extraction algorithm.\nOnly extract relevant information from the text.\nIf you do not know the value of an attribute asked to extract, you may omit the attribute's value.\nYou must format your output as raw JSON without any backticks or markdown formatting. Do not include ```json or similar wrappers.\n"
},
"attributes": {
"attributes": [
{
"name": "book_id",
"description": "book id เลขที่หนังสือ"
},
{
"name": "date",
"type": "date",
"description": "วันที่ date"
},
{
"name": "subject",
"description": "subject เรื่อง"
},
{
"name": "to",
"description": "ถึง เรียน to"
},
{
"name": "attach",
"description": "attach เอกสารแนบ หรือ อ้างถึง"
},
{
"name": "detail",
"description": "detail รายละเอียด เนื้อความ ในหนังสือ"
},
{
"name": "signed_by",
"description": "signed_by ลงนาม"
},
{
"name": "contact_phone",
"description": "contact_phone หมายเลขโทรศัพท์ติดต่อ"
},
{
"name": "contact_email",
"description": "contact_email อีเมล์สำหรับการติดต่อ"
},
{
"name": "download_url",
"description": "download_url QR code สำหรับแสกนไฟล์ที่เกี่ยวข้อง"
},
{
"name": "signed_by_position",
"description": "signed_by_position ตำแหน่งผู้ลงนาม ตำแหน่งผู้สั่งการ"
}
]
}
},
"typeVersion": 1.2
},
{
"id": "3d82e9cd-a982-4ad6-8a18-5fecdd3bbfd5",
"name": "Modelo de chat OpenAI",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-1808,
208
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini",
"cachedResultName": "gpt-4o-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"id": "28LXl50ZdQjnkMJs",
"name": "OpenAi account"
}
},
"typeVersion": 1.2
},
{
"id": "efe1b305-288b-4ea9-a35b-0cd634e2e011",
"name": "Establecer datos de Drive",
"type": "n8n-nodes-base.set",
"position": [
-2976,
336
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "42960a6d-c039-42f7-9658-22e56159b931",
"name": "source",
"type": "string",
"value": "GDrive"
},
{
"id": "a17844e1-5328-42e6-b67f-d3c6886e1d95",
"name": " fileName",
"type": "string",
"value": "=slip_{{\n $now.format('ddLLyyyyHHmm') }}.{{ $json.fileExtension }}"
},
{
"id": "983bf680-ee70-4c70-8aa9-811cd5b81a04",
"name": "fileId",
"type": "string",
"value": "={{ $json.permissions[1].id }}"
}
]
},
"includeOtherFields": true
},
"typeVersion": 3.4,
"alwaysOutputData": false
},
{
"id": "8067480c-7800-4da7-a195-8e972b01cb5e",
"name": "Mover archivo",
"type": "n8n-nodes-base.googleDrive",
"position": [
-1456,
480
],
"parameters": {
"fileId": {
"__rl": true,
"mode": "id",
"value": "={{ $('Google Drive Trigger').item.json.id }}"
},
"driveId": {
"__rl": true,
"mode": "id",
"value": "1QRfuxVMkw2K_yavR3aPMSQPBnuu7xB2m"
},
"folderId": {
"__rl": true,
"mode": "list",
"value": "root",
"cachedResultName": "/ (Root folder)"
},
"operation": "move"
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "QVrgALkld7whKIgB",
"name": "Google Drive account - Peakwave"
}
},
"typeVersion": 3
},
{
"id": "9ea5b7ae-0a37-4b57-a2ee-259b57cc05ff",
"name": "Sticky Note11",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2064,
320
],
"parameters": {
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"height": 261,
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}Preguntas frecuentes
¿Cómo usar este flujo de trabajo?
Copie el código de configuración JSON de arriba, cree un nuevo flujo de trabajo en su instancia de n8n y seleccione "Importar desde JSON", pegue la configuración y luego modifique la configuración de credenciales según sea necesario.
¿En qué escenarios es adecuado este flujo de trabajo?
Avanzado - Extracción de documentos, Resumen de IA
¿Es de pago?
Este flujo de trabajo es completamente gratuito, puede importarlo y usarlo directamente. Sin embargo, tenga en cuenta que los servicios de terceros utilizados en el flujo de trabajo (como la API de OpenAI) pueden requerir un pago por su cuenta.
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Nivel de dificultad
Avanzado
Número de nodos29
Categoría2
Tipos de nodos12
Descripción de la dificultad
Autor
Jaruphat J.
@jaruphatjProject Manager who passionate about Automation & AI and continuously explore innovative ways to improve business processes through intelligent workflow automation. Let’s connect and automate the future!
Enlaces externos
Ver en n8n.io →
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