通过C++用JavaScript格式化单元格

介绍

如何使用样式方法格式化单元格

在单元格上应用不同种类的格式样式，设置背景或前景颜色、边框、字体、水平和垂直对齐、缩进级别、文本方向、旋转角度等。

如何使用样式方法

如果开发人员需要对不同的单元格应用不同的格式，可以先用 Cell.style 方法获取单元格的 Style ，指定样式属性，然后用 Cell.style 方法应用格式。下面的示例演示了如何对一个单元格使用多种格式。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Styling 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');

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

            // Obtaining the reference of the first worksheet
            const worksheet = workbook.worksheets.get(0);

            // Accessing the "A1" cell from the worksheet
            const cell = worksheet.cells.get("A1");

            // Adding some value to the "A1" cell
            cell.value = "Hello Aspose!";

            // Defining a Style object
            let style;

            // Get the style from A1 cell
            style = cell.style;

            // Setting the vertical alignment
            style.verticalAlignment = AsposeCells.TextAlignmentType.Center;

            // Setting the horizontal alignment
            style.horizontalAlignment = AsposeCells.TextAlignmentType.Center;

            // Setting the font color of the text
            style.font.color = AsposeCells.Color.Green;

            // Setting to shrink according to the text contained in it
            style.shrinkToFit = true;

            // Setting the bottom border color to red
            style.borders.get(AsposeCells.BorderType.BottomBorder).color = AsposeCells.Color.Red;

            // Setting the bottom border type to medium
            style.borders.get(AsposeCells.BorderType.BottomBorder).lineStyle = AsposeCells.CellBorderType.Medium;

            // Applying the style to A1 cell
            cell.style = style;

            // Saving the Excel file
            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'book1.out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

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

如何使用样式对象为不同单元格设置格式

如果开发人员需要对不同的单元格应用相同的样式，可以使用 Style 对象。请按照以下步骤使用 Style 对象：

  1. 通过调用 Workbook 类的 createStyle() 方法添加 Style 对象
  2. 访问新添加的 Style 对象
  3. 设置 Style 对象的属性/特性以应用所需的格式
  4. 将配置好的 Style 对象赋值给目标单元格

这种方法可以极大地提高您的应用程序的效率，并节省内存。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Example - Create Workbook and Style Cells</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, TextAlignmentType, Color, BorderType, CellBorderType } = 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 () => {
            // Instantiate a new Workbook
            const workbook = new Workbook();

            // Add a new worksheet to the workbook
            const i = workbook.worksheets.add();

            // Obtain the newly added worksheet by index
            const worksheet = workbook.worksheets.get(i);

            // Access cell A1
            const cell = worksheet.cells.get("A1");

            // Set value of A1
            cell.value = "Hello Aspose!";

            // Create a new style
            const style = workbook.createStyle();

            // Set vertical and horizontal alignment
            style.verticalAlignment = TextAlignmentType.Center;
            style.horizontalAlignment = TextAlignmentType.Center;

            // Set font color
            style.font.color = Color.Green;

            // Shrink to fit
            style.shrinkToFit = true;

            // Set bottom border color and style
            style.borders.get(BorderType.BottomBorder).color = Color.Red;
            style.borders.get(BorderType.BottomBorder).lineStyle = CellBorderType.Medium;

            // Apply style to A1
            cell.style = style;

            // Apply same style to B1, C1, D1
            worksheet.cells.get("B1").style = style;
            worksheet.cells.get("C1").style = style;
            worksheet.cells.get("D1").style = style;

            // Save workbook to XLS format and provide download link
            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'book1.out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

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

如何使用Microsoft Excel 2007预定义样式

如果您需要为Microsoft Excel 2007应用不同的格式样式，请使用Aspose.Cells API应用样式。下面的示例演示了如何使用这种方法在单元格上应用预定义样式。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Create Workbook and Set Cell Style 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 () => {
            // Instantiate a new Workbook.
            const workbook = new Workbook();

            // Create a style object.
            const style = workbook.createStyle();

            // Access the first worksheet in the workbook
            const worksheet = workbook.worksheets.get(0);

            // Access cell A1
            const cell = worksheet.cells.get("A1");

            // Input a value to A1 cell.
            cell.putValue("Test");

            // Apply the style to the cell.
            cell.style = style;

            // Saving the Excel 2007 file.
            const outputData = workbook.save(SaveFormat.Xlsx);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'book1.out.xlsx';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

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

如何格式化单元格中的选定字符

处理字体设置解释了如何格式化单元格中的文本，但它只解释了如何格式化所有单元格内容。如果您只想格式化选定的字符怎么办？

Aspose.Cells 也支持此功能。本文将说明如何有效使用此功能。

如何格式化选定的字符

Aspose.Cells 提供了一个表示 Microsoft Excel 文件的类 Workbook。Workbook类包含一个 worksheets 集合，可以访问Excel文件中的每个工作表。工作表由 Worksheet 类表示。Worksheet 类提供一个 cells 集合。cells 集合中的每个项目代表一个 Cell 类的对象。

Cell 类提供了 characters(number, number) 方法，接受以下参数以选择单元格内部的字符范围：

  • 起始索引，选择开始的字符的索引。
  • 字符数，要选择的字符数。

characters(number, number) 方法返回 FontSetting 类的实例，允许开发者以与格式化单元格相同的方式格式化字符，示例如下。在输出文件中，单元格A1中的“Visit”将采用默认字体格式，“Aspose!”将加粗且为蓝色。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
        <meta charset="utf-8" />
    </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');

            // If a file is provided, open it; otherwise create a new workbook
            let workbook;
            if (fileInput.files && fileInput.files.length > 0) {
                const file = fileInput.files[0];
                const arrayBuffer = await file.arrayBuffer();
                workbook = new Workbook(new Uint8Array(arrayBuffer));
            } else {
                workbook = new Workbook();
            }

            // Obtaining the reference of the first (default) worksheet by passing its sheet index
            const worksheet = workbook.worksheets.get(0);

            // Accessing the "A1" cell from the worksheet
            const cell = worksheet.cells.get("A1");

            // Adding some value to the "A1" cell
            cell.value = "Visit Aspose!";

            // Setting the font of selected characters to bold and color to blue
            const charRange = cell.characters(6, 7);
            charRange.font.isBold = true;
            charRange.font.color = AsposeCells.Color.Blue;

            // Saving the Excel file
            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'book1.out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

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

如何格式化行和列

有时，开发人员需要在行或列上应用相同的格式。逐个单元格应用格式通常需要更长时间，不是一个好的解决方案。 为解决这个问题，Aspose.Cells提供了一个在本文中详细讨论的简单、快速的方法。

格式化行和列

Aspose.Cells 提供一个代表 Microsoft Excel 文件的类 Workbook。Workbook 类包含一个 worksheets 集合，可以访问Excel文件中的每个工作表。工作表由 Worksheet 类表示。Worksheet 类提供一个 cells 集合。cells 集合提供一个 rows 集合。

如何格式化一行

rows 集合中的每个项代表一个 Row 对象。Row 对象提供用于设置行格式的 applyStyle(Style, StyleFlag) 方法。若要对一行应用相同的格式，可以使用 Style 对象。以下步骤演示了如何使用它。

  1. 通过调用 createStyle() 类的 Workbook 方法，将 Style 对象添加到 Workbook 类中。
  2. 设置 Style 对象的属性以应用格式设置。
  3. 将相关属性开启到 StyleFlag 对象。
  4. 将配置好的 Style 对象分配给 Row 对象。
<!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 () => {
            // Instantiating a Workbook object
            const workbook = new Workbook();

            // Obtaining the reference of the first (default) worksheet by passing its sheet index
            const worksheet = workbook.worksheets.get(0);

            // Adding a new Style to the styles
            const style = workbook.createStyle();

            // Setting the vertical alignment of the text in the "A1" cell
            style.verticalAlignment = AsposeCells.TextAlignmentType.Center;

            // Setting the horizontal alignment of the text in the "A1" cell
            style.horizontalAlignment = AsposeCells.TextAlignmentType.Center;

            // Setting the font color of the text in the "A1" cell
            style.font.color = AsposeCells.Color.Green;

            // Shrinking the text to fit in the cell
            style.shrinkToFit = true;

            // Setting the bottom border color of the cell to red
            style.borders.get(AsposeCells.BorderType.BottomBorder).color = AsposeCells.Color.Red;

            // Setting the bottom border type of the cell to medium
            style.borders.get(AsposeCells.BorderType.BottomBorder).lineStyle = AsposeCells.CellBorderType.Medium;

            // Creating StyleFlag
            const styleFlag = new AsposeCells.StyleFlag();
            styleFlag.horizontalAlignment = true;
            styleFlag.verticalAlignment = true;
            styleFlag.shrinkToFit = true;
            styleFlag.borders = true;
            styleFlag.fontColor = true;

            // Accessing a row from the Rows collection
            const row = worksheet.cells.rows.get(0);

            // Assigning the Style object to the Style property of the row
            row.applyStyle(style, styleFlag);

            // Saving the Excel file
            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'book1.out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Modified Excel File';

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

如何格式化一列

cells 集合还提供一个 columns 集合。每个项代表一个 Column 对象。类似于 Row 对象，Column 也提供 applyStyle(Style, StyleFlag) 方法用于格式化列。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Style and Column Apply 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 () => {
            // Instantiate a new Workbook
            const workbook = new Workbook();

            // Obtain the first worksheet
            const worksheet = workbook.worksheets.get(0);

            // Add a new Style to the styles
            const style = workbook.createStyle();

            // Set vertical and horizontal alignment
            style.verticalAlignment = AsposeCells.TextAlignmentType.Center;
            style.horizontalAlignment = AsposeCells.TextAlignmentType.Center;

            // Set font color
            style.font.color = AsposeCells.Color.Green;

            // Shrink to fit
            style.shrinkToFit = true;

            // Set bottom border color and style
            style.borders.get(AsposeCells.BorderType.BottomBorder).color = AsposeCells.Color.Red;
            style.borders.get(AsposeCells.BorderType.BottomBorder).lineStyle = AsposeCells.CellBorderType.Medium;

            // Create and configure StyleFlag
            const styleFlag = new AsposeCells.StyleFlag();
            styleFlag.horizontalAlignment = true;
            styleFlag.verticalAlignment = true;
            styleFlag.shrinkToFit = true;
            styleFlag.borders = true;
            styleFlag.fontColor = true;

            // Access first column and apply style
            const column = worksheet.cells.getColumns().get(0);
            column.applyStyle(style, styleFlag);

            // Save the workbook and provide download link
            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'book1.out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Modified Excel File';

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

高级主题

管理Excel文件的数据 使用 JavaScript 通过 C++ 管理 Excel 文件的公式