我如何使用itext7从存储在Blob存储中的pdf中提取文本？

如何解决我如何使用itext7从存储在Blob存储中的pdf中提取文本？

我正在使用itext7从pdf提取文本。这是我的代码，用于提取本地pdf文件的文本：

 var pageText = new StringBuilder();  
    using(PdfDocument pdfDocument = new PdfDocument(new PdfReader("E:\\es.pdf"))) {  
        var pageNumbers = pdfDocument.GetNumberOfPages();  
        for (int i = 1; i <= pageNumbers; i++) {  
            LocationTextExtractionStrategy strategy = new LocationTextExtractionStrategy();  
            PdfCanvasProcessor parser = new PdfCanvasProcessor(strategy);  
            parser.ProcesspageContent(pdfDocument.GetFirstPage());  
            pageText.Append(strategy.GetResultantText());  
        }  
    } 

但是，我不知道如何解析存储在azure blob存储中的pdf。

解决方法

如果您想阅读pdf格式的天蓝色斑点，请参考以下代码

 string storageAccountName = "andyprivate";
            string accountKey = "";
            var blobServiceClient = new BlobServiceClient(
                new Uri($"https://{storageAccountName}.blob.core.windows.net"),new StorageSharedKeyCredential(storageAccountName,accountKey),new BlobClientOptions());

            var containerClient = blobServiceClient.GetBlobContainerClient("test");
            var blob = containerClient.GetBlobClient("sample.pdf");
            BlobProperties properties = await blob.GetPropertiesAsync();
            var pageText = new StringBuilder();
            using (var stream = await blob.OpenReadAsync(position: 0,bufferSize: (int)properties.ContentLength))
            using (PdfDocument pdfDocument = new PdfDocument(new PdfReader(stream))) {
                var pageNumbers = pdfDocument.GetNumberOfPages();
                for (int i = 1; i <= pageNumbers; i++)
                {
                    LocationTextExtractionStrategy strategy = new LocationTextExtractionStrategy();
                    PdfCanvasProcessor parser = new PdfCanvasProcessor(strategy);
                    parser.ProcessPageContent(pdfDocument.GetPage(i));
                    pageText.Append(strategy.GetResultantText());
                    pageText.Append(Environment.NewLine);


                }

                Console.WriteLine(pageText);
            }