通过 Node.js 结合 C++ 将 CSV、TSV 和 TXT 转换为 Excel
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使用 Aspose.Cells，可以将 CSV 文件转换为 Excel、OpenOffice、PDF、JSON 等多种格式。
打开 CSV 文件
逗号分隔值（CSV）文件包含记录，其中值由逗号分隔。 数据存储为表格，其中每列由逗号字符分隔并由双引号字符引用。 如果字段值包含双引号字符，则用一对双引号字符进行转义。 您还可以使用 Microsoft Excel 将电子表格数据导出到 CSV。
const path = require("path");
const AsposeCells = require("aspose.cells.node");
// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
// Instantiate LoadOptions specified by the LoadFormat.
const loadOptions4 = new AsposeCells.LoadOptions(AsposeCells.LoadFormat.Csv);
// Create a Workbook object and opening the file from its path
const wbCSV = new AsposeCells.Workbook(path.join(dataDir, "Book_CSV.csv"), loadOptions4);
console.log("CSV file opened successfully!");
打开 CSV 文件并替换无效字符
在Excel中，打开带有特殊字符的CSV文件时，字符会自动被替换。Aspose.Cells API也会执行相同操作，以下代码示例演示了这一点。
const path = require("path");
const AsposeCells = require("aspose.cells.node");
// Source directory
const sourceDir = path.join(__dirname, "data");
const filePath = path.join(sourceDir, "[20180220142533][ASPOSE_CELLS_TEST].csv");
const options = new AsposeCells.TxtLoadOptions();
options.setSeparator(",");
options.setLoadFilter(new AsposeCells.LoadFilter(AsposeCells.LoadDataFilterOptions.CellData));
options.setCheckExcelRestriction(false);
options.setConvertNumericData(false);
options.setConvertDateTimeData(false);
// Load CSV file
const workbook = new AsposeCells.Workbook(filePath, options);
console.log(workbook.getWorksheets().get(0).getName()); // (20180220142533)(ASPOSE_CELLS_T
console.log(workbook.getWorksheets().get(0).getName().length); // 31
console.log("CSV file opened successfully!");
使用自定义分隔符打开文本文件
文本文件用于在不格式化的情况下保存电子表格数据。 文件是一种可以具有一些自定义分隔符的纯文本文件。
const path = require("path");
const AsposeCells = require("aspose.cells.node");
// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
const filePath = path.join(dataDir, "Book11.csv");
// Instantiate Text File's LoadOptions
const txtLoadOptions = new AsposeCells.TxtLoadOptions();
// Specify the separator
txtLoadOptions.setSeparator(",");
// Specify the encoding type
txtLoadOptions.setEncoding(AsposeCells.EncodingType.UTF8);
// Create a Workbook object and opening the file from its path
const wb = new AsposeCells.Workbook(filePath, txtLoadOptions);
// Save file
wb.save(path.join(dataDir, "output.txt"));
打开制表符分隔文件
选项卡分隔（文本）文件包含电子表格数据，但没有任何格式。数据以类似表格和电子表格的行和列进行排列。基本上，选项卡分隔文件是一种特殊的纯文本文件，每列之间用制表符分隔。
const path = require("path");
const AsposeCells = require("aspose.cells.node");
// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
// Opening Tab Delimited Files
// Instantiate LoadOptions specified by the LoadFormat.
const loadOptions5 = new AsposeCells.LoadOptions(AsposeCells.LoadFormat.TabDelimited);
// Create a Workbook object and opening the file from its path
const wbTabDelimited = new AsposeCells.Workbook(path.join(dataDir, "Book1TabDelimited.txt"), loadOptions5);
console.log("Tab delimited file opened successfully!");
打开制表符分隔数值（TSV）文件
Tab分隔值（TSV）文件包含电子表格数据，但没有任何格式。它与Tab分隔文件相同，数据以行和列的形式排列。
const path = require("path");
const AsposeCells = require("aspose.cells.node");
// Source directory
const sourceDir = path.join(__dirname, "data");
// Instantiate LoadOptions specified by the LoadFormat.
const loadOptions = new AsposeCells.LoadOptions(AsposeCells.LoadFormat.Tsv);
// Create a Workbook object and opening the file from its path
const workbook = new AsposeCells.Workbook(path.join(sourceDir, "SampleTSVFile.tsv"), loadOptions);
// Using the Sheet 1 in Workbook
const worksheet = workbook.getWorksheets().get(0);
// Accessing a cell using its name
const cell = worksheet.getCells().get("C3");
console.log("Cell Name: " + cell.getName() + " Value: " + cell.getStringValue());