java - iTextpdf 背景仅设置为可用文本

Question

以下是我使用 iText 从 Java 生成 PDF 的代码:

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Font.FontFamily;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;
 
 
 
public class ChunkBackground {
 
    public static final String DEST = "C:\\test.pdf";
 
    public static void main(String[] args) throws IOException,
            DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new ChunkBackground().createPdf(DEST);
    }
 
    public void createPdf(String dest) throws IOException, DocumentException {
        Document document = new Document();
        PdfWriter.getInstance(document, new FileOutputStream(dest));
        document.open();
        
        Font f = new Font(FontFamily.HELVETICA, 8.5f, Font.BOLD, BaseColor.WHITE);
        Chunk c = new Chunk("FOR EMPLOYMENT WITH XXXX YYYY XXXXX", f);
        
        c.setBackground(BaseColor.BLACK);
        Paragraph p = new Paragraph();
        p.add(c);
 
        document.add(p);
        document.close();
    }
     
}

这是生成的 PDF:

如何设置背景宽度而不考虑文本宽度？

Answer 1

我要做的是将 block 包含在 PdfTable 中，宽度为 100%，如下所示:

    Font f = new Font(FontFamily.HELVETICA, 8.5f, Font.BOLD, BaseColor.WHITE);
    Chunk c = new Chunk("FOR EMPLOYMENT WITH XXXX YYYY XXXXX", f);

    PdfPTable table = new PdfPTable(1);
    PdfPCell cell = new PdfPCell(new Phrase(c));

    cell.setBackgroundColor(BaseColor.BLACK);
    table.addCell(cell);
    table.setWidthPercentage(100);

    document.add(table);
    document.close();

输出: