尝试使用Azure Functions自动将Excel文件保存为CSV格式的Blob,以便可以在Logic Apps或Azure Data Factory中使用。我希望使用ExcelDataReader C#库,但我可以将NuGet包下载到我的Function中,但是之后被卡住了。
当前似乎卡住了,因为File.Open命令在本地路径中查找文件,并且出现以下错误:
使用(可变流= File.Open(filePath,FileMode.Open,FileAccess.Read))
文件名,目录名或卷标语法不正确:'D:\ Program Files(x86)\ SiteExtensions \ Functions \ 2.0.12507 \ 64bit ....'
关于通过Azure Functions保存XLSX的任何建议吗?
答案 0 :(得分:3)
您不必手动打开流,Azure Functions Binding可以为您完成读写操作。
例如:
[FunctionName("ConvertExcelToCSV")]
public static async Task RunAsync(
[BlobTrigger("excel-files/{blobName}")] Stream excelFileInput,
[Blob("csv-files/{blobName}", FileAccess.Write)] Stream csvFileOutput,
CancellationToken token,
ILogger log)
{
log.LogInformation($"Do your processing on the excelFileInput file here.");
//Do your processing on another steam. Maybe, MemoryStream
await memoryStream.CopyToAsync(csvFileOutput, 4096, token);
}
答案 1 :(得分:0)
如果使用Environment.CurrentDirectory
获取执行目录,它将响应您显示的目录。而且这个目录位于天蓝色的kudu中,不允许创建文件,因此您的excel文件不存在。您可以使用context.FunctionDirectory
来获取当前函数目录(例如,在Azure上运行时)
例如:
public static void Run([TimerTrigger("0 */1 * * * *")]TimerInfo myTimer, ILogger log, ExecutionContext context)
{
var excelFilePath = context.FunctionDirectory + @"\Book.xlsx";
var destinationCsvFilePath = context.FunctionDirectory + @"\test.csv";
System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
var stream = new FileStream(excelFilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
IExcelDataReader reader = null;
reader = ExcelReaderFactory.CreateOpenXmlReader(stream);
var ds = reader.AsDataSet(new ExcelDataSetConfiguration()
{
ConfigureDataTable = (tableReader) => new ExcelDataTableConfiguration()
{
UseHeaderRow = false
}
});
var csvContent = string.Empty;
int row_no = 0;
while (row_no < ds.Tables[0].Rows.Count)
{
var arr = new List<string>();
for (int i = 0; i < ds.Tables[0].Columns.Count; i++)
{
arr.Add(ds.Tables[0].Rows[row_no][i].ToString());
}
row_no++;
csvContent += string.Join(",", arr) + "\n";
}
StreamWriter csv = new StreamWriter(destinationCsvFilePath, false);
csv.Write(csvContent);
csv.Close();
log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
}
只需在此处更新您的excel: