将文件上传到 Azure 文件存储

Question

我有一个带有 SAS 令牌的 URL，用于上传文件。我有一个先前定义的内容类型的 Base64 字符串，需要上传。

import { FileUploadStreamOptions, ShareFileClient } from "@azure/storage-file-share";
import { Readable } from "readable-stream";

async submitData(context: ComponentFramework.Context<IInputs>, fileName: string, ext: string, base64: string, contentType: string, classification: string, upload: any) : Promise<boolean> {
   const buffer = Buffer.from(base64, 'base64');

   let client = new ShareFileClient(upload.url);
   let readable = Readable.from(buffer);

   const options = {
       fileHttpHeaders: { 
          fileContentType: contentType,
       },
   };

   await client.uploadStream(readable, buffer.length, 4 * 1024 * 1024, 5, options);
   console.log("Upload successful");
   
   // more logic
   return true;
}

我的代码有两个问题：

1. 未等待

   await client.uploadStream(readable, buffer.length, 4 * 1024 * 1024, 5, options);

   ，该方法已转义。

2. 上传的文件已损坏。下载后，内容返回为：

{"$content-type":"application/pdf","$content":"AAAAAAAAAAAAAA...AAAAA"}

1. 我尝试过不等待电话，这似乎在大多数情况下都有效，尽管确实应该等待。

2. 我尝试向流中添加编码，但这似乎也不起作用。

Answer 1

我有一个带有 SAS 令牌的 URL，用于上传文件。我有一个先前定义的内容类型的 Base64 字符串，需要上传。

您可以使用以下代码将pdf文件上传到Azure文件共享中。

代码：

// upload.ts
import { ShareFileClient, FileUploadStreamOptions } from "@azure/storage-file-share";
import { Readable } from "stream"; 

async function submitData(fileName: string, base64: string, contentType: string, uploadUrl: string): Promise<boolean> {
    try {
        const buffer = Buffer.from(base64, 'base64');
        const client = new ShareFileClient(uploadUrl);
        const readable = Readable.from(buffer);
        
        const options: FileUploadStreamOptions = {
            fileHttpHeaders: { 
                fileContentType: contentType,
            },
        };
        await client.uploadStream(readable, buffer.length, 4 * 1024 * 1024, 5, options);
        console.log("Upload successful");
        
        return true;
    } catch (error) {
        console.error("Upload failed:", error);
        return false;
    }
}

const main = async () => {
    const fileName = "example.pdf"; // Set the file name
    const contentType = "application/pdf"; // Set the content type

    const uploadUrl = "https://<storage account name>.file.core.windows.net/<share name>/<filename>?sv=2022-11-02&ss=bfqt&srt=sco&sp=rwdlacupiytfx&se=2024-10-22T16:45:20Z&st=2024-10-22T08:45:20Z&spr=https&sig=redacted"; 

    const base64 = "6xxxxx"
    const result = await submitData(fileName, base64, contentType, uploadUrl);
    console.log(`Upload result: ${result}`);
};

main().catch(console.error);

上面用

submitData

函数进行的解释是将 base64 字符串转换为

buffer

，创建

ShareFileClient

，并使用

uploadStream

方法上传文件。如果上传成功返回

true

，否则返回

false

。

输出：

Upload successful
Upload result: true

上面的代码成功上传了文件，当我上传后从门户点击

Download

时，它打开没有任何问题。