使用代码节点模式恢复工作流节点间丢失的二进制数据

• •可能需要目标 API 的认证凭证

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    "creator": "Lucas Peyrin",
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      "name": "重新访问前一节点的二进制数据",
      "type": "n8n-nodes-base.code",
      "notes": "© 2025 Lucas Peyrin",
      "creator": "Lucas Peyrin",
      "position": [
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        "jsCode": "// IMPORTANT: Change this to the name of the node you want to get binary files from.\nconst previousNodeName = 'Get n8n Logo (Binary)';\n\n// This will hold all the items we process.\nconst allItems = [];\n\n// Loop over every item that is coming into this Code node.\nfor (const item of $input.all()) {\n\n  // For the current item in the loop, find its corresponding item from the previous node.\n  // The '.item' accessor automatically links the current item to its parent from the specified node.\n  const previousNodeItem = $(previousNodeName).item;\n\n  // Check if the corresponding item from the previous node actually has binary data.\n  if (previousNodeItem && previousNodeItem.binary) {\n\n    // Ensure the current item has a 'binary' object to add files to.\n    // This also prevents overwriting any binary data the current item might already have.\n    item.binary = item.binary || {};\n\n    // Now, loop over ALL keys (each key represents a file) in the binary object.\n    for (const inputPropertyName in previousNodeItem.binary) {\n      \n      // Get the specific binary file's data (which includes the base64 data and fileName).\n      const binary = previousNodeItem.binary[inputPropertyName];\n\n      // Decode the base64 data into a Buffer.\n      const myBuffer = Buffer.from(binary.data, 'base64');\n\n      // Use the n8n helper to prepare the binary data correctly for the next node\n      // and attach it to the current item's binary object using its original property name.\n      item.binary[inputPropertyName] = await this.helpers.prepareBinaryData(myBuffer, binary.fileName);\n    }\n  }\n\n  // Add the processed item (with its new binary data) to our results array.\n  allItems.push(item);\n}\n\n// Return all the processed items.\nreturn allItems;"
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              "id": "66ff2460-78b7-4231-b6ef-108acb51cd23",
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      "notes": "© 2025 Lucas Peyrin",
      "creator": "Lucas Peyrin",
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        "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/5/53/N8n-logo-new.svg/2560px-N8n-logo-new.svg.png",
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        "content": "## 重新访问二进制数据"
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      "notes": "© 2025 Lucas Peyrin",
      "creator": "Lucas Peyrin",
      "position": [
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      "parameters": {
        "color": "7",
        "width": 256,
        "height": 192,
        "content": "此节点从 URL 获取二进制图像（n8n 徽标）。"
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      "notes": "© 2025 Lucas Peyrin",
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      "position": [
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      "parameters": {
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        "width": 352,
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        "content": "⚠️ **重要概念！**"
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      "notes": "© 2025 Lucas Peyrin",
      "creator": "Lucas Peyrin",
      "position": [
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      "parameters": {
        "color": "6",
        "width": 400,
        "height": 464,
        "content": "### 魔法在此发生！"
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            "node": "Get n8n Logo (Binary)",
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    "Remove Binary Data": {
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            "node": "Re-Access Binary Data from Previous Node",
            "type": "main",
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      "main": [
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            "node": "Remove Binary Data",
            "type": "main",
            "index": 0
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