Spara fil till responses objekt med JavaScript via C++

Aspose.Cells gör det möjligt att manipulera filer. Den här artikeln förklarar de olika sätten på vilka filer kan sparas till ett responsobjekt.

Spara fil till responsobjekt

Det är också möjligt att generera en fil dynamiskt och skicka den direkt till en klientwebbläsare. Använd en speciell överbelastad version av Save-metoden som accepterar följande parametrar:

JavaScript-responsobjekt.
Filnamn.
ContentDisposition, utdatafilens content-disposition-typ.
SaveOptions, filformatstyp

Enumerationen ContentDisposition avgör om filen som skickas till webbläsaren ger möjlighet att öppna den direkt i webbläsaren eller i ett program som är kopplat till .xls/.xlsx eller annan extension.

Uppräkningen innehåller följande fördefinierade sparalternativ:

Typ	Beskrivning
Bilaga	Skickar kalkylarket till webbläsaren och öppnas i en applikation som en bilaga associerad med .xls/.xlsx eller andra filändelser
Inline	Skickar dokumentet till webbläsaren och presenterar ett alternativ att spara kalkylarket på disken eller öppna det inne i webbläsaren

XLS-filer

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Save XLS 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, XlsSaveOptions, Utils } = 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');
            // Create a new workbook (equivalent to new AsposeCells.Workbook() in JavaScript)
            const workbook = new Workbook();

            // Simulate the JavaScript "response" which is null in this example
            let response = null;

            if (response != null) {
                // Server-side streaming scenario (not used in browser example)
                // Save in Excel2003 XLS format to response stream with options
                const options = new XlsSaveOptions();
                workbook.save(response, "output.xls", AsposeCells.ContentDisposition.Inline, options);
                response.end();
                document.getElementById('result').innerHTML = '<p style="color: green;">File written to response stream.</p>';
            } else {
                // Browser: save workbook and provide download link
                const options = new XlsSaveOptions();
                const outputData = workbook.save(SaveFormat.Excel97To2003, options);
                const blob = new Blob([outputData], { type: "application/vnd.ms-excel" });
                const downloadLink = document.getElementById('downloadLink');
                downloadLink.href = URL.createObjectURL(blob);
                downloadLink.download = 'output.xls';
                downloadLink.style.display = 'block';
                downloadLink.textContent = 'Download Excel File';
                document.getElementById('result').innerHTML = '<p style="color: green;">Workbook saved. Click the download link to get the file.</p>';
            }
        });
    </script>
</html>

XLSX-filer

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Example</h1>
        <p>Select an Excel file to load or leave empty to create a new workbook. Click "Save as XLSX" to generate and download output.xlsx.</p>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Save as XLSX</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, OoxmlSaveOptions, Utils } = 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');

            // Load workbook from selected file or create a new one
            let workbook;
            if (fileInput.files.length) {
                const file = fileInput.files[0];
                const arrayBuffer = await file.arrayBuffer();
                workbook = new Workbook(new Uint8Array(arrayBuffer));
            } else {
                workbook = new Workbook();
            }

            // Save the workbook in XLSX format and provide a download link
            const outputData = workbook.save(SaveFormat.Xlsx);
            const blob = new Blob([outputData], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'output.xlsx';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download output.xlsx';

            document.getElementById('result').innerHTML = '<p style="color: green;">Workbook generated successfully. Click the download link to save the file.</p>';
        });
    </script>
</html>

PDF-filer

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Save to PDF Example</title>
    </head>
    <body>
        <h1>Save Workbook to PDF Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Save as PDF</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, PdfSaveOptions } = 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');

            // Create or load workbook
            let workbook;
            if (fileInput.files.length) {
                const file = fileInput.files[0];
                const arrayBuffer = await file.arrayBuffer();
                workbook = new Workbook(new Uint8Array(arrayBuffer));
            } else {
                workbook = new Workbook();
            }

            // Prepare PDF save options
            const pdfOptions = new PdfSaveOptions();

            // Save workbook as PDF and provide download link
            const outputData = workbook.save(SaveFormat.Pdf, pdfOptions);
            const blob = new Blob([outputData], { type: "application/pdf" });
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'output.pdf';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download PDF File';

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

Obs

På grund av frånvaron av ett standardiserat responses objekt i JavaScript finns denna funktionalitet inte i Aspose.Cells for JavaScript via C++. Du kan hänvisa till följande kod för att spara filen till strömmen, och sedan utföra operationer på strömmen.

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells 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 result = document.getElementById('result');

            if (!fileInput.files.length) {
                result.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 selected file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Save the workbook to a memory buffer in XLSX format
            const outputData = workbook.save(SaveFormat.Xlsx);

            // Create a blob and provide a download link
            const blob = new Blob([outputData], { type: "application/octet-stream" });
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'output.xlsx';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

            result.innerHTML = '<p style="color: green;">File is ready. Click the download link to save the workbook.</p>';
        });
    </script>
</html>

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