如何使用 Power Automate 中的文件内容在 excel 中添加完整图像

Question

我有一个 Microsoft 表单，可以让用户回答一些问题并上传图片。所有响应都将保存到 excel table 中，并带有自动流程。这些答案将保存为字符串，URL 指向 OneDrive，图片将保存到 excel table。

好的，很多人都问过如何使用 URL 将图片插入 excel 的问题，但到目前为止还没有解决方案。 Microsoft 的标准答案似乎不起作用——只要 URL 指向 OneDrive / SharePoint 就会出现获取错误（请参阅此 link）

我从另一个方面问同样的问题。我可以在 power automatic flow 中获取文件内容。当我下载文件内容并检查它时，它具有这样的数据结构（出于安全原因，这不是完整的文件内容）：

{"statusCode":200,"headers":{"Pragma":"no-cache","x-ms-request-id":"0f368276-7f62-4daa-82a7-98f5fda","Timing-Allow-Origin":"*","x-ms-apihub-cached-response":"false","Accept-Ranges":"bytes","Cache-Control":"no-cache","Date":"Mon, 11 Oct 2021 09:21:21 GMT","ETag":""{D2E67548-99EE-4BA3-BAB3},4"","Location":"https://flow-apim-msmanaged-na-centralus-01.azure-apim.net/apim/onedriveforbusiness/a47f3c2699aa4df70f3614572a9/datasets/default/files/01YEFL272IOXTNF.../content?inferContentType=true","X-AspNet-Version":"4.0.30319","X-Powered-By":"ASP.NET","Content-Length":"137453","Content-Disposition":"attachment; filename="16337833927412488499783584031011.jpg"","Content-Type":"image/jpeg","Expires":"-1"},"body":{"$content-type":"image/jpeg","$content":"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...==}}

据我所知，“body”之后的字符串：{“$content-type”：“image/jpeg”，“$content”:，从 /9j/4UVORX 开始直到 ...= = 是该图像的 base64 字符串，逻辑上可以传递给 OfficeScript 并调用 worksheet.AddImage API 将完整图片作为图像直接插入 excel 工作表。

如果我将文件内容从 power automatic flow 传递给 OfficeScript，有人知道如何使用 OfficeScript 提取 base64 字符串吗？

===插件===

经过一番研究，我设法使用 json 函数从文件内容中提取了正确的字符串：

json(outputs('Get_file_content')?['body']?['$content'])

但是提示错误：Action 'Compose' failed...

哎呀...运行没脑子...

Answer 1

这个流程对我有用：

Parse JSON动作中的Content表达式是这样的：

first(json(outputs('Get_response_details')?['body/r926aef8d3cf24b569e10513f3d540e0a']))

获取表单上传文件的信息。根据您的表单，实际表达式可能会有所不同。您只需将正确的表单回复字段插入 first(json( ))：

Parse JSON动作中使用的Schema是：

{
    "type": "object",
    "properties": {
        "name": {
            "type": "string"
        },
        "link": {
            "type": "string"
        },
        "id": {
            "type": "string"
        },
        "type": {},
        "size": {
            "type": "integer"
        },
        "referenceId": {
            "type": "string"
        },
        "driveId": {
            "type": "string"
        },
        "status": {
            "type": "integer"
        },
        "uploadSessionUrl": {}
    }
}

而用于传递到 Run script 操作的 base64ImageString 表达式是：

base64(outputs('Get_file_content')?['body'])

最后，如果您对我在这里使用的脚本感兴趣：

function main(workbook: ExcelScript.Workbook, sheetName: string, address: string, base64ImageString: string) {
  let sheet = workbook.getWorksheet(sheetName);
  let range = sheet.getRange(address);
  let image = sheet.addImage(base64ImageString);
  image.setTop(range.getTop());
  image.setLeft(range.getLeft());
}

如何使用 Power Automate 中的文件内容在 excel 中添加完整图像

How to add a full image in excel using filecontent in power automate

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