In deze korte tutorial wordt uitgelegd hoe u PDF kunt samenvoegen met C# REST API. U leert alle PDF’s samenvoegen met de C# REST Interface met behulp van de SDK. Het legt alle stappen uit die nodig zijn om de applicatie te ontwikkelen voor het combineren van meerdere PDF-bestanden.
Voorwaarde
Downloaden Aspose.PDF Cloud SDK for Dotnet
Stel een C#-project in met de bovenstaande SDK
Stappen om PDF te combineren met C# Low Code API
- Stel de API-sleutel en SID in voor het initialiseren van het klasseobject PdfApi
- Maak het MergeDocuments-object en geef de lijst met PDF-bestanden op die u wilt samenvoegen
- Upload alle bron-PDF-bestanden met behulp van de methode UploadFile() in de klasse PdfApi
- Roep de methode PutMergeDocuments() aan om alle PDF-bestanden samen te voegen tot één enkel doel-PDF-bestand
- Download en bewaar het uitgevoerde PDF-bestand met de inhoud van alle samengevoegde PDF-bestanden
Deze stappen geven een samenvatting van hoe u PDF online kunt samenvoegen met C# REST API. Gebruik het klasseobject MergeDocuments om de lijst met PDF-bestanden te maken die u wilt samenvoegen, en upload al deze PDF-bestanden naar de cloud met behulp van de methode PdfApi.UploadFile() en roep de methode PutMergeDocuments() aan om de PDF-bestanden online samen te voegen. De API-aanroep retourneert de status OK, waarna u de DownloadFile-methode kunt aanroepen om het uitgevoerde PDF-bestand op te halen.
Code om PDF-bestanden te combineren met op C# .NET gebaseerde API
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| using System; | |
| using System.IO; | |
| using Aspose.Pdf.Cloud.Sdk.Api; | |
| using Aspose.Pdf.Cloud.Sdk.Model; | |
| using System.Collections.Generic; | |
| namespace Aspose.PDF.Cloud.Examples.Kb | |
| { | |
| public class PdfTasks | |
| { | |
| public static void SplitPDFFiles() | |
| { | |
| PdfApi pdfApi = new PdfApi("API KEY", "API SID"); | |
| String fileName = "sample.pdf"; | |
| String format = "pdf"; | |
| int from = 1; | |
| int to = 2; | |
| String storage = ""; | |
| String folder = ""; | |
| try | |
| { | |
| // Upload source file to aspose cloud storage | |
| pdfApi.UploadFile(fileName, new MemoryStream( System.IO.File.ReadAllBytes(fileName))); | |
| // Invoke Aspose.PDF Cloud SDK API to split pdf files | |
| SplitResultResponse apiResponse = pdfApi.PostSplitDocument(fileName, format, from, to, storage, folder); | |
| if (apiResponse.Status.Equals("OK")) | |
| { | |
| // Download created pdf file | |
| foreach(var item in apiResponse.Result.Documents) | |
| { | |
| Stream storageRes = pdfApi.DownloadFile(item.Href); | |
| storageRes.Position = 0; | |
| using (FileStream fileStream = new FileStream(item.Href, FileMode.Create, FileAccess.Write)) | |
| { | |
| storageRes.CopyTo(fileStream); | |
| } | |
| } | |
| Console.WriteLine("Split PDF Files, Done!"); | |
| Console.ReadKey(); | |
| } | |
| } | |
| catch (Exception ex) | |
| { | |
| System.Diagnostics.Debug.WriteLine("error:" + ex.Message + "\n" + ex.StackTrace); | |
| } | |
| } | |
| public static void MergePDFFiles() | |
| { | |
| PdfApi pdfApi = new PdfApi("API KEY", "API SID");// For merging PDF files | |
| String fileName = "sample-merged.pdf"; | |
| String storage = ""; | |
| String folder = ""; | |
| MergeDocuments body = new MergeDocuments(new List<string> { "sample.pdf", "input.pdf" }); | |
| try | |
| { | |
| // Load the input Word file | |
| pdfApi.UploadFile("sample.pdf", new MemoryStream(System.IO.File.ReadAllBytes("sample.pdf"))); | |
| pdfApi.UploadFile("input.pdf", new MemoryStream(System.IO.File.ReadAllBytes("input.pdf"))); | |
| // Merge the PDF files | |
| DocumentResponse apiResponse = pdfApi.PutMergeDocuments(fileName, body); | |
| if (apiResponse != null && apiResponse.Status.Equals("OK")) | |
| { | |
| // Download created pdf file | |
| Stream storageRes = pdfApi.DownloadFile(fileName); | |
| // Save response stream to a file | |
| storageRes.Position = 0; | |
| using (FileStream fileStream = new FileStream(fileName, FileMode.Create, FileAccess.Write)) | |
| { | |
| storageRes.CopyTo(fileStream); | |
| } | |
| Console.WriteLine("Merge Multiple PDF Files, Done!"); | |
| Console.ReadKey(); | |
| } | |
| } | |
| catch (Exception ex) | |
| { | |
| System.Diagnostics.Debug.WriteLine("error:" + ex.Message + "\n" + ex.StackTrace); | |
| } | |
| } | |
| public static void CreatePDF() | |
| { | |
| try | |
| { | |
| PdfApi pdfApi = new PdfApi("2086fd1a0db8175482a26f53c230483e", "fd43bbdc-4e3d-4a75-8847-2138b3ad167e"); | |
| DocumentResponse response = pdfApi.PutCreateDocument("newPdfFile"); | |
| if (response != null && response.Status.Equals("OK")) | |
| { | |
| Paragraph para = PrepareParagraph("This is first text for new PDF"); | |
| pdfApi.PutAddText("newPdfFile", 1, para); | |
| var stream = pdfApi.DownloadFile("newPdfFile", null, null); | |
| using (var fileStream = File.Create("output.pdf")) | |
| { | |
| stream.Seek(0, SeekOrigin.Begin); | |
| stream.CopyTo(fileStream); | |
| } | |
| } | |
| } | |
| catch (Exception ex) | |
| { | |
| System.Diagnostics.Debug.WriteLine("error:" + ex.Message + "\n" + ex.StackTrace); | |
| Console.WriteLine("error:" + ex.Message + "\n" + ex.StackTrace); | |
| } | |
| } | |
| private static Paragraph PrepareParagraph(string text) | |
| { | |
| List<TextLine> textLines = new List<TextLine>(); | |
| Segment segment = new Segment(Value: text); | |
| List<Segment> segments = new List<Segment>(); | |
| segments.Add(segment); | |
| TextLine textLine = new TextLine(Segments: segments); | |
| textLines.Add(textLine); | |
| Rectangle rectangle = new Rectangle(50.0, 800, 300.0, 850); | |
| Paragraph paragraph = new Paragraph(Lines: textLines, Rectangle: rectangle); | |
| return paragraph; | |
| } | |
| //THIS CODE IS CREATINg INVALID PDF FILE | |
| public static void CreatePDFFromXML() | |
| { | |
| // For complete examples and data files, please go to https://github.com/aspose-pdf/Aspose.Pdf-for-Cloud | |
| PdfApi pdfApi = new PdfApi("2086fd1a0db8175482a26f53c230483e", "fd43bbdc-4e3d-4a75-8847-2138b3ad167e"); | |
| String fileName = "input_out.pdf"; | |
| String templateFile = "sample.xsl"; | |
| String dataFile = "sample.xml"; | |
| //String templateType = "xml"; | |
| String storageRef = "my_xml"; | |
| //String folder = ""; | |
| try | |
| { | |
| // Upload source file to aspose cloud storage | |
| byte[] templateFileBytes = System.IO.File.ReadAllBytes(templateFile); | |
| MemoryStream templateFileStream = new MemoryStream(templateFileBytes); | |
| byte[] dataFileBytes = System.IO.File.ReadAllBytes(dataFile); | |
| MemoryStream dataFileStream = new MemoryStream(dataFileBytes); | |
| pdfApi.UploadFile(templateFile, templateFileStream); | |
| pdfApi.UploadFile(dataFile, dataFileStream); | |
| // Invoke Aspose.PDF Cloud SDK API to create Pdf from XML | |
| //DocumentResponse apiResponse = pdfApi.PutCreateDocument(fileName, templateFile, dataFile); | |
| AsposeResponse apiResponse = pdfApi.PutXmlInStorageToPdf(fileName, dataFile, xslFilePath: templateFile, storage: "my_xml"); | |
| if (apiResponse != null && apiResponse.Status.Equals("OK")) | |
| { | |
| // Download created pdf file | |
| Stream storageRes = pdfApi.DownloadFile(fileName); | |
| // Save response stream to a file | |
| //storageRes.CopyTo(new FileStream("Sample_out.pdf", FileMode.Create, FileAccess.Write)); | |
| storageRes.Position = 0; | |
| SaveStreamToFile(storageRes, fileName); | |
| //Console.WriteLine("Create PDF from XML, Done!"); | |
| //Console.ReadKey(); | |
| } | |
| } | |
| catch (Exception ex) | |
| { | |
| System.Diagnostics.Debug.WriteLine("error:" + ex.Message + "\n" + ex.StackTrace); | |
| } | |
| } | |
| private static void SaveStreamToFile(Stream sourceStream, string filePath) | |
| { | |
| // Ensure the directory exists | |
| //string directoryPath = Path.GetDirectoryName(filePath); | |
| //if (!Directory.Exists(directoryPath)) | |
| //{ | |
| // Directory.CreateDirectory(directoryPath); | |
| //} | |
| // Create a FileStream to write the stream to the file | |
| using (FileStream fileStream = new FileStream(filePath, FileMode.Create, FileAccess.Write)) | |
| { | |
| sourceStream.CopyTo(fileStream); | |
| } | |
| } | |
| } | |
| } |
Deze code heeft ons geleerd hoe we PDF-bestanden kunnen samenvoegen met de C# REST-interface. Gebruik in de methode UploadFile() dezelfde namen als in de lijst met PDF-bestanden in het MergeDocuments-object. Wanneer u het resulterende PDF-bestand downloadt, stelt u de parameter Positie in op nul, anders kunt u het bestand niet op de schijf opslaan.
In dit artikel wordt uitgelegd hoe u PDF-documenten online kunt samenvoegen met de op C# .NET gebaseerde API. Raadpleeg het volgende artikel om een leeg PDF-bestand te maken: Maak een PDF-document met NET REST API.
