Apache PDFBox 表/行对齐与 Boxable

Posted 2023-03-05

【中文标题】Apache PDFBox 表/行对齐与 Boxable

【英文标题】：Apache PDFBox Table/Row Alignment with Boxable

【发布时间】：2021-12-16 10:54:59

【问题描述】：

我在我的程序中导出一个 PDF，我想用 ApachePDF Box 创建一个表格，它应该是页面宽度的 50-60%。

但是，我没有找到任何关于居中行/表格本身的信息。

我找到了如何对齐行/单元格本身中的文本，但如果我创建一个不使用页面全宽的行，它总是左对齐，我不知道如何居中对齐行，因为该行或表没有setAlign 方法。

我在上面使用 Boxable (https://github.com/dhorions/boxable)

【问题讨论】：

Pdfbox 不包含显式表生成功能。您可能是指您在 pdfbox 之上使用的一些库。请给它命名。

啊是的我忘了，我正在使用github.com/dhorions/boxable

【参考方案1】：

  public void Test() throws IOException       

    //Set margins
   
    float margin = 10;

    //Initialize Document
    PDDocument doc = new PDDocument();
    PDPage page = addNewPage(doc);

    //Initialize table
    float tableWidth = page.getMediaBox().getWidth() - (2 * margin);
    float yStartNewPage = page.getMediaBox().getHeight() - (2 * margin);
    boolean drawContent = true;
    boolean drawLines = true;
    float yStart = yStartNewPage;
    float bottomMargin = 70;
    BaseTable table = new BaseTable(yStart, yStartNewPage, bottomMargin, tableWidth, margin, doc, page, drawLines,
            drawContent);

    // set default line spacing for entire table
    table.setLineSpacing(1.5f);

    Row<PDPage> row = table.createRow(10);

    // set single spacing for entire row
    row.setLineSpacing(1f);

    // my first 3x wider cell
    Cell<PDPage> cell = row.createCell((3*100/15f), "1",
            HorizontalAlignment.get("center"), VerticalAlignment.get("top"));
    cell.setFontSize(6);

            // my other 12 equal cells
    for(int i=2; i<14; i++)
        Cell<PDPage> cell2 = row.createCell((100/15f), String.valueOf(i),
                HorizontalAlignment.get("center"), VerticalAlignment.get("top"));
        cell2.setFontSize(6);
    

    table.draw();

    //Save the document
    File file = new File("target/test.pdf");
    System.out.println("Sample file saved at : " + file.getAbsolutePath());
    Files.createParentDirs(file);
    doc.save(file);
    doc.close();

调整设置位置和表格宽度......

【参考方案2】：

调整设置位置和表格宽度：

public void Test() throws IOException 
    //Set margins
    float margin = 10;

    //Initialize Document
    PDDocument doc = new PDDocument();
    PDPage page = addNewPage(doc);

    //Initialize table
    float tableWidth = page.getMediaBox().getWidth() - (2 * margin);
    float yStartNewPage = page.getMediaBox().getHeight() - (2 * margin);
    boolean drawContent = true;
    boolean drawLines = true;
    float yStart = yStartNewPage;
    float bottomMargin = 70;
    BaseTable table = new BaseTable(yStart, yStartNewPage, bottomMargin, tableWidth, margin, doc, page, drawLines, drawContent);

    // set default line spacing for entire table
    table.setLineSpacing(1.5f);

    Row<PDPage> row = table.createRow(10);

    // set single spacing for entire row
    row.setLineSpacing(1f);

    // my first 3x wider cell
    Cell<PDPage> cell = row.createCell((3*100/15f), "1",
    HorizontalAlignment.get("center"), VerticalAlignment.get("top"));
    cell.setFontSize(6);

    // my other 12 equal cells
    for(int i=2; i<14; i++)
        Cell<PDPage> cell2 = row.createCell((100/15f), String.valueOf(i),                    
        HorizontalAlignment.get("center"), VerticalAlignment.get("top"));
        cell2.setFontSize(6);
    

    table.draw();

    //Save the document
    File file = new File("target/test.pdf");
    System.out.println("Sample file saved at : " + file.getAbsolutePath());
    Files.createParentDirs(file);
    doc.save(file);
    doc.close();