使用JavaScript通过C++将Excel转换为CSV、TSV和Txt

将工作簿保存为文本或CSV格式

有时，你想将带有多个工作表的工作簿转换或保存为文本格式。对于文本格式（例如TXT、TabDelim、CSV等），默认情况下，Microsoft Excel 和 Aspose.Cells 只会保存活动工作表的内容。

以下代码示例说明如何将整个工作簿保存为文本格式。加载源工作簿，它可以是任何Microsoft Excel或OpenOffice电子表格文件（如XLS、XLSX、XLSM、XLSB、ODS等），包含任意数量的工作表。

执行代码后，将会将工作簿中所有工作表的数据转换为TXT格式。

您可以修改相同的示例以将文件保存为CSV。默认情况下，TxtSaveOptions.separator是一个逗号，因此在保存为CSV格式时不要指定分隔符。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Txt Save Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Txt Save 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, TxtSaveOptions, 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');
            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 by opening the uploaded Excel file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Text save options. You can use any type of separator
            const opts = new TxtSaveOptions();
            opts.separator = '\t';
            opts.exportAllSheets = true;

            // Save entire workbook data into file (as text)
            const outputData = workbook.save(SaveFormat.Txt, opts);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'out.txt';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Text File';

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

使用自定义分隔符保存文本文件

文本文件包含无格式的电子表格数据。该文件是一种纯文本文件，可以在其数据之间具有一些自定义分隔符。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Export Workbook to TXT/CSV 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, TxtSaveOptions, 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();

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

            // Instantiate Text File's Save Options
            const options = new TxtSaveOptions();

            // Specify the separator
            options.separator = ";";

            // Optionally specify CSV save format if required by the API
            options.saveFormat = SaveFormat.CSV;

            // Save the workbook to CSV/TXT using the options
            const outputData = wb.save(SaveFormat.CSV, options);
            const blob = new Blob([outputData], { type: 'text/csv' });
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'output.csv';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download CSV File';

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

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