使用JavaScript通过C++读取支持多编码的CSV文件

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Aspose.Cells 提供了 TxtLoadOptions.isMultiEncoded() 属性,你需要将其设置为 true,以正确加载多编码的CSV文件。

以下截图显示了一个包含两行的示例CSV文件。第一行是ANSI编码,第二行是Unicode编码

输入文件
todo:image_alt_text

以下截图显示了未将 TxtLoadOptions.isMultiEncoded() 属性设置为 true 的情况下,从上述CSV文件转换的XLSX文件。可以看到,Unicode文本没有正确转换。

输出文件1:未对多种编码进行处理
todo:image_alt_text

以下截图显示了在将上述 CSV 文件转换为 XLSX 文件后,将 TxtLoadOptions.isMultiEncoded() 属性设置为 true。可以看到,Unicode 文本现在被正确转换。

输出文件2:IsMultiEncoded设置为true
todo:image_alt_text

以下是将上述 CSV 文件正确转换为 XLSX 格式的示例代码。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells - Convert Multi-Encoded CSV to XLSX</h1>
        <input type="file" id="fileInput" accept=".csv" />
        <button id="runExample">Convert to 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, TxtLoadOptions, 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 a CSV file.</p>';
                return;
            }

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

            // Create TxtLoadOptions and set isMultiEncoded property
            const options = new TxtLoadOptions();
            options.isMultiEncoded = true;

            // Load the CSV into a Workbook using the options
            const workbook = new Workbook(new Uint8Array(arrayBuffer), options);

            // Save the workbook to XLSX format and provide a download link
            const outputData = workbook.save(SaveFormat.Xlsx);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            const outName = file.name.replace(/(\.[^/.]+)$/, '$1.out.xlsx');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = outName;
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Converted Excel File';

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

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