Impor dan Ekspor Data dalam JSON

Impor dan Ekspor Data dari Formulir dalam JSON

Memanipulasi bidang formulir dalam dokumen PDF dapat menjadi penting saat menangani operasi input dan output data dalam berbagai aplikasi. Pustaka Aspose.PDF menawarkan fungsionalitas yang kuat untuk mengekspor dan mengimpor bidang formulir dalam format JSON. Di bawah ini, kami menjelajahi beberapa cuplikan kode yang menunjukkan cara melakukan tugas ini menggunakan berbagai pendekatan.

Sejak 24.7, dimungkinkan untuk menambahkan Impor dan Ekspor Data dari Formulir dalam Format JSON:

Ekspor bidang formulir ke dan dari file JSON

Pendekatan ini mengekspor semua bidang formulir dari dokumen PDF yang ada ke dalam file JSON dan mengimpornya ke dokumen PDF baru.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportAllFieldsToJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // Create ExportFieldsToJsonOptions with indentation
    var options = new Aspose.Pdf.ExportFieldsToJsonOptions { WriteIndented = true };

    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Export fields to JSON
        var exportResult = document.Form.ExportToJson(outputJsonPath, options);

        // Optionally, save the document with fields to a new PDF
        document.Save(dataDir + "TextBox_out.pdf");
    }
}

Impor bidang formulir dari file JSON dan masukkan ke dokumen PDF yang dibuat

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldsFromJsonAndInsertToPdf(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
	
    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Create PDF document to import fields into
        var newDocument = new Aspose.Pdf.Document();

        // Add page
        var page = newDocument.Pages.Add();

        // Import fields from JSON
        var importResult = newDocument.Form.ImportFromJson(outputJsonPath);

        // Save PDF document
        newDocument.Save(dataDir + "TextBox_out.pdf");
    }
}

Ekspor bidang formulir ke dan dari file JSON menggunakan FileStream

Cuplikan ini mengekspor bidang ke file JSON menggunakan ‘FileStream’ untuk mengelola input dan output file.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportFieldsToJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
	
    // Create ExportFieldsToJsonOptions with indentation
    var options = new Aspose.Pdf.ExportFieldsToJsonOptions { WriteIndented = true };

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Create a FileStream to write the JSON output
        using (var fileStream = File.Create(outputJsonPath))
        {
            // Export fields to JSON using the FileStream
            var exportResult = document.Form.ExportToJson(fileStream, options);
        }
    }
}

Impor bidang formulir dari file JSON menggunakan FileStream dan masukkan ke dokumen PDF yang dibuat

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldsFromJsonToCreatedPdt(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Create PDF document to import fields into
        var newDocument = new Aspose.Pdf.Document();

        // Add page
        var page = newDocument.Pages.Add();

        // Open the JSON file for reading
        using (var fileStream = File.OpenRead(outputJsonPath))
        {
            // Import fields from JSON using the FileStream
            var importResult = newDocument.Form.ImportFromJson(fileStream);
        }

        // Save PDF document
        newDocument.Save(dataDir + "TextBox_out.pdf");
    }
}

Ekspor bidang formulir dalam format JSON menggunakan MemoryStream

Dalam beberapa skenario, Anda mungkin lebih suka bekerja dengan data dalam memori daripada dengan file di disk. Pendekatan ini menggunakan ‘MemoryStream’ untuk menangani proses ekspor dan impor sepenuhnya dalam memori.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportFieldsToJsonUsingMemoryStream(string inputPdfPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Create a MemoryStream to hold the JSON data
    using (var memoryStream = new MemoryStream())
    {
        // Open PDF document
        using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
        {
            // Export fields to JSON and write to the MemoryStream
            var exportResult = document.Form.ExportToJson(memoryStream);
        }

        // Save the MemoryStream content to a file
        File.WriteAllBytes(outputPdfPath, memoryStream.ToArray());
    }
}

Impor bidang formulir dalam format JSON menggunakan MemoryStream

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldsFromJsonUsingMemoryStream(string inputPdfPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Create PDF document to import fields into
        var newDocument = new Aspose.Pdf.Document();

        // Add page
        var page = newDocument.Pages.Add();

        // Create a MemoryStream to hold the JSON data
        using (var memoryStream = new MemoryStream())
        {
            // Export fields from the original document to the MemoryStream
            document.Form.ExportToJson(memoryStream);

            // Reset the MemoryStream position to the beginning
            memoryStream.Position = 0;

            // Import fields from the MemoryStream into the new document
            var importResult = newDocument.Form.ImportFromJson(memoryStream);
        }

        // Save PDF document
        newDocument.Save(dataDir + "TextBox_out.pdf");
    }
}

Ekspor bidang tertentu ke dan dari file JSON

Terkadang, Anda mungkin perlu mengekspor atau mengimpor hanya bidang tertentu daripada semua bidang dalam dokumen.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportFieldToJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // Create ExportFieldsToJsonOptions with indentation
    var options = new Aspose.Pdf.ExportFieldsToJsonOptions { WriteIndented = true };

    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Get the specific field (WidgetAnnotation) from the form
        if (document.Form[1] is Aspose.Pdf.Annotations.WidgetAnnotation field)
        {
            // Export the field to JSON
            var exportResult = field.ExportToJson(outputJsonPath, options);
        }
    }
}

Impor bidang tertentu ke dan dari file JSON

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldFromJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Create PDF document to import fields into
        var newDocument = new Aspose.Pdf.Document();

        // Add page
        var page = newDocument.Pages.Add();

        // Import fields from JSON
        var importResult = newDocument.Form.ImportFromJson(outputJsonPath);

        // Save PDF document
        newDocument.Save(dataDir + "TextBox_out.pdf");
    }
}

Ekspor bidang tertentu ke dan dari file JSON menggunakan FileStream

Contoh ini mirip dengan yang di atas tetapi menggunakan ‘FileStream’ untuk menangani operasi ekspor dan impor untuk bidang tertentu.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportFieldToJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // Create ExportFieldsToJsonOptions with indentation
    var options = new Aspose.Pdf.ExportFieldsToJsonOptions { WriteIndented = true };
	
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();	

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Get the specific field (WidgetAnnotation) from the form
        if (document.Form[1] is Aspose.Pdf.Annotations.WidgetAnnotation field)
        {
            // Create a FileStream to write the JSON output
            using (var fileStream = File.Create(outputJsonPath))
            {
                // Export the field to JSON using the FileStream
                var exportResult = field.ExportToJson(fileStream, options);
            }
        }
    }
}

Impor bidang tertentu ke dan dari file JSON menggunakan FileStream

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldFromJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // Create PDF document to import fields into
    using (var newDocument = new Aspose.Pdf.Document())
    {
        // Add page
        var page = newDocument.Pages.Add();

        // Open the JSON file for reading
        using (var fileStream = File.OpenRead(outputJsonPath))
        {
            // Import fields from JSON using the FileStream
            var importResult = newDocument.Form.ImportFromJson(fileStream);
        }

        // Save PDF document
        newDocument.Save(dataDir + "TextBox_out.pdf");
    }
}

Ekspor bidang tertentu dalam format JSON menggunakan MemoryStream

Cuplikan kode ini menunjukkan cara mengekspor bidang formulir tertentu dari dokumen PDF ke dalam format JSON menggunakan ‘MemoryStream’ dan kemudian mengimpornya ke dokumen PDF baru.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportFieldToJsonUsingMemoryStream(string inputPdfPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Create a MemoryStream to hold the JSON data
    using (var memoryStream = new MemoryStream())
    {
        // Open PDF document
        using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
        {
            // Get the specific field (WidgetAnnotation) from the form
            if (document.Form[1] is Aspose.Pdf.Annotations.WidgetAnnotation field)
            {
                // Export the field to JSON and write to the MemoryStream
                var exportResult = field.ExportToJson(memoryStream);
            }
        }

        // Optionally, you can save the MemoryStream content to a file
        File.WriteAllBytes(outputPdfPath, memoryStream.ToArray());
    }
}

Impor bidang tertentu dalam format JSON menggunakan MemoryStream

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldFromJsonUsingMemoryStream(string inputPdfPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Create PDF document to import fields into
        var newDocument = new Aspose.Pdf.Document();

        // Add page
        var page = newDocument.Pages.Add();

        // Create a MemoryStream to hold the JSON data
        using (var memoryStream = new MemoryStream())
        {
            // Export fields from the original document to the MemoryStream
            document.Form.ExportToJson(memoryStream);

            // Reset the MemoryStream position to the beginning
            memoryStream.Position = 0;

            // Import fields from the MemoryStream into the new document
            var importResult = newDocument.Form.ImportFromJson(memoryStream);
        }

        // Save PDF document
        newDocument.Save(dataDir + "TextBox_out.pdf");
    }
}

Ekspor nilai dari bidang tertentu ke file JSON menggunakan FileStream

Cuplikan kode ini menunjukkan cara mengekspor nilai dari bidang formulir tertentu dari dokumen PDF ke dalam file JSON menggunakan FileStream.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportFieldValueToJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
	
    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Get the specific field from the form
        if (document.Form.Fields[1] is Aspose.Pdf.Forms.Field field)
        {
            // Create a FileStream to write the JSON output
            using (var fileStream = File.Create(outputJsonPath))
            {
                // Export the field value to JSON using the FileStream
                field.ExportValueToJson(fileStream);
            }
        }
    }
}

Impor nilai ke bidang tertentu dari file JSON menggunakan FileStream

Cuplikan kode ini menunjukkan cara mengimpor nilai dari file JSON ke dalam bidang formulir tertentu dalam dokumen PDF menggunakan FileStream.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldValueFromJson(string inputPdfPath, string outputJsonPath, string outputPdfPath)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Get the specific field from the form
        if (document.Form.Fields[1] is Aspose.Pdf.Forms.Field field)
        {
            // Open the JSON file for reading
            using (var fileStream = File.OpenRead(outputJsonPath))
            {
                // Import the field value from JSON using the FileStream
                field.ImportValueFromJson(fileStream);
            }
        }

        // Save PDF document
        document.Save(dataDir + "TextBox_out.pdf");
    }
}

Impor nilai dari bidang lain ke bidang tertentu dari file JSON menggunakan FileStream

Cuplikan kode ini menunjukkan cara mengimpor nilai dari bidang lain ke bidang tertentu dari file JSON menggunakan FileStream dan Aspose.PDF.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ImportFieldValueFromJson(string inputPdfPath, string outputJsonPath, string outputPdfPath, string fullNameOfOtherFieldInJson)
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
    {
        // Get the specific field from the form
        if (document.Form.Fields[1] is Aspose.Pdf.Forms.Field field)
        {
            // Open the JSON file for reading
            using (var fileStream = File.OpenRead(outputJsonPath))
            {
                // Import the field value from JSON using the FileStream and the full name of the other field in JSON
                field.ImportValueFromJson(fileStream, fullNameOfOtherFieldInJson);
            }
        }

        // Save PDF document
        document.Save(dataDir + "TextBox_out.pdf");
    }
}

Penanganan Kesalahan

Contoh ini menunjukkan cara mengekspor bidang formulir dari PDF ke file JSON menggunakan Aspose.PDF, termasuk menangani berbagai status untuk setiap bidang selama proses ekspor.

Mari kita uraikan contoh Aspose.PDF ini langkah demi langkah:

  1. Memuat Dokumen. Kami memuat dokumen PDF bernama “Sample.pdf” dari direktori yang ditentukan.

  2. Mengatur Opsi Ekspor. Di sini, kami membuat instance dari ExportFieldsToJsonOptions dengan dua pengaturan:

    • ExportPasswordValue : Ini menyertakan bidang kata sandi dalam ekspor.
    • WriteIndented : Ini memformat output JSON agar terindetasi untuk keterbacaan.

  3. Ekspor bidang formulir ke JSON. Kami mengekspor bidang formulir dari file PDF ke file JSON yang disebut “export.json” menggunakan parameter yang ditentukan.

  4. Memproses Hasil Ekspor: Loop ini mengiterasi melalui hasil ekspor dan mencetak status setiap bidang:

    • Sukses: Menunjukkan bahwa bidang berhasil diekspor.
    • Peringatan: Mencetak pesan peringatan terkait bidang.
    • Kesalahan: Mencetak pesan kesalahan terkait bidang.
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExportFieldsToJsonWithOptions()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(Path.Combine(dataDir, "Forms", "Sample.pdf")))
    {
        // Create ExportFieldsToJsonOptions with specific settings
        var options = new Aspose.Pdf.ExportFieldsToJsonOptions
        {
            ExportPasswordValue = true,
            WriteIndented = true,
        };

        var exportResults = document.Form.ExportToJson(File.OpenWrite("export.json"), options);

        foreach (var result in exportResults)
        {
            Console.Write($"{result.FieldFullName} ");
            switch (result.FieldSerializationStatus)
            {
                case Aspose.Pdf.FieldSerializationStatus.Success:
                    Console.WriteLine("Success");
                    break;
                case Aspose.Pdf.FieldSerializationStatus.Warning:
                    foreach (var messages in result.WarningMessages)
                    {
                        Console.WriteLine(messages);
                    }
                    break;
                case Aspose.Pdf.FieldSerializationStatus.Error:
                    foreach (var messages in result.ErrorMessages)
                    {
                        Console.WriteLine(messages);
                    }
                    break;
            }
        }
    }
}
Hapus Form dari PDF di C#