HTML con JavaScript tramite C++

Conversione di un Workbook Excel in HTML

L’API Aspose.Cells supporta l’esportazione di fogli di calcolo in formato HTML. Per questo scopo, Aspose.Cells utilizza la classe HtmlSaveOptions per fornire la flessibilità di controllare vari aspetti dell’HTML di output.

L’esempio di codice di seguito mostra come salvare un workbook come file HTML usando JavaScript tramite C++:

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells - Convert Excel to HTML</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Convert to HTML</button>
        <a id="downloadLink" style="display: none;">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat } = AsposeCells;

        AsposeCells.onReady({
            license: "/lic/aspose.cells.enc",
            fontPath: "/fonts/",
            fontList: [
                "arial.ttf",
                "NotoSansSC-Regular.ttf"
            ]
        }).then(() => {
            console.log("Aspose.Cells initialized");
        });

        document.getElementById('runExample').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            if (!fileInput.files.length) {
                document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
                return;
            }

            const file = fileInput.files[0];
            const arrayBuffer = await file.arrayBuffer();

            // Instantiating a Workbook object from the uploaded file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Saving the workbook to HTML format
            const outputData = workbook.save(SaveFormat.Html);
            const blob = new Blob([outputData], { type: 'text/html' });
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'out.html';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download HTML File';

            document.getElementById('result').innerHTML = '<p style="color: green;">Conversion completed! Click the download link to get the HTML file.</p>';
        });
    </script>
</html>

Conversione della cartella di lavoro Excel in file MHTML

MHTML combina HTML normale con risorse esterne (ovvero contenuti collegati come immagini, animazioni, audio, ecc.) in un unico file. Sono usati per email con estensione .mht. Aspose.Cells supporta la lettura e la scrittura di file MHTML.

L’esempio di codice di seguito mostra come salvare un workbook come file MHTML usando JavaScript tramite C++:

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example - Save as MHT</title>
    </head>
    <body>
        <h1>Save Excel as MHT Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Run Example</button>
        <a id="downloadLink" style="display: none;">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat } = AsposeCells;

        AsposeCells.onReady({
            license: "/lic/aspose.cells.enc",
            fontPath: "/fonts/",
            fontList: [
                "arial.ttf",
                "NotoSansSC-Regular.ttf"
            ]
        }).then(() => {
            console.log("Aspose.Cells initialized");
        });

        document.getElementById('runExample').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            const resultDiv = document.getElementById('result');
            if (!fileInput.files.length) {
                resultDiv.innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
                return;
            }

            const file = fileInput.files[0];
            const arrayBuffer = await file.arrayBuffer();

            // Load your source workbook from the uploaded file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Save file to MHT format
            const outputData = workbook.save(SaveFormat.MHtml);
            const blob = new Blob([outputData], { type: 'application/octet-stream' });
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'out.mht';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download MHT File';

            resultDiv.innerHTML = '<p style="color: green;">File converted to MHT successfully! Click the download link to get the result.</p>';
        });
    </script>
</html>

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