使用带有itext pdf的rowspan时无法显示背景颜色 [英] Cannot display background color when using rowspan with itext pdf

问题描述

我正在尝试创建一个如下所示的表：

我想使用的行数为2.问题是当我使用rowspan时，顶行的背景颜色显示正常，但第二行显示白色。

我面临的问题是：示例的屏幕截图与此指控相矛盾。

请提供一些重现问题的示例代码，或检查我的代码，看看我是如何为行距或大于1的colspan创建彩色背景：

  public void createPdf（String dest）throws IOException，DocumentException {
 Document document = new Document（）; 
 PdfWriter.getInstance（document，new FileOutputStream（dest））; 
 document.open（）; 
 PdfPTable table = new PdfPTable（5）; 
 PdfPCell sn = new PdfPCell（new Phrase（S / N））; 
 sn.setRowspan（2）; 
 sn.setBackgroundColor（BaseColor.YELLOW）; 
 table.addCell（sn）; 
 PdfPCell name = new PdfPCell（new Phrase（Name））; 
 name.setColspan（3）; 
 name.setBackgroundColor（BaseColor.CYAN）; 
 table.addCell（name）; 
 PdfPCell age = new PdfPCell（new Phrase（Age））; 
 age.setRowspan（2）; 
 age.setBackgroundColor（BaseColor.GRAY）; 
 table.addCell（年龄）; 
 PdfPCell surname = new PdfPCell（new Phrase（SURNAME））; 
 surname.setBackgroundColor（BaseColor.BLUE）; 
 table.addCell（姓）; 
 PdfPCell firstname = new PdfPCell（new Phrase（FIRST NAME））; 
 firstname.setBackgroundColor（BaseColor.RED）; 
 table.addCell（firstname）; 
 PdfPCell middlename = new PdfPCell（new Phrase（MIDDLE NAME））; 
 middlename.setBackgroundColor（BaseColor.GREEN）; 
 table.addCell（middlename）; 
 PdfPCell f1 =新的PdfPCell（新短语（1））; 
 f1.setBackgroundColor（BaseColor.PINK）; 
 table.addCell（f1）; 
 PdfPCell f2 = new PdfPCell（new Phrase（James））; 
 f2.setBackgroundColor（BaseColor.MAGENTA）; 
 table.addCell（f2）; 
 PdfPCell f3 = new PdfPCell（new Phrase（Fish））; 
 f3.setBackgroundColor（BaseColor.ORANGE）; 
 table.addCell（f3）; 
 PdfPCell f4 = new PdfPCell（new Phrase（Stone））; 
 f4.setBackgroundColor（BaseColor.DARK_GRAY）; 
 table.addCell（f4）; 
 PdfPCell f5 =新的PdfPCell（新词组（17））; 
 f5.setBackgroundColor（BaseColor.LIGHT_GRAY）; 
 table.addCell（f5）; 
 document.add（table）; 
 document.close（）; 
} 
  

确保使用最新的官方版iText（夏普）。我们知道有人分发了过时（有缺陷）的iText（夏普）版本。

I am trying to create a table like the one shown here:

I want to use a rowspan of 2. The problem is that when I use rowspan, the background color of the top row shows fine but the 2nd row shows white.

I am facing the same issue shown here: http://itext.2136553.n4.nabble.com/Rowspan-and-background-color-td4659361.html

I am trying to do this in Java. Am I missing something silly here ?

解决方案

Please take a look at the SimpleTable10 example. In this example, I tried to reproduce your problem by creating a table that looks exactly like yours, except that I gave a different background color to each cell:

You claim that the background color of the top row shows fine, but that the second row shows white. The screen shot of the simple_table10.pdf example contradicts this allegation.

Please provide some sample code that reproduces the problem, or inspect my code to see how I was able to create colored backgrounds for cells with a rowspan or colspan greater than 1:

public void createPdf(String dest) throws IOException, DocumentException {
    Document document = new Document();
    PdfWriter.getInstance(document, new FileOutputStream(dest));
    document.open();
    PdfPTable table = new PdfPTable(5);
    PdfPCell sn = new PdfPCell(new Phrase("S/N"));
    sn.setRowspan(2);
    sn.setBackgroundColor(BaseColor.YELLOW);
    table.addCell(sn);
    PdfPCell name = new PdfPCell(new Phrase("Name"));
    name.setColspan(3);
    name.setBackgroundColor(BaseColor.CYAN);
    table.addCell(name);
    PdfPCell age = new PdfPCell(new Phrase("Age"));
    age.setRowspan(2);
    age.setBackgroundColor(BaseColor.GRAY);
    table.addCell(age);
    PdfPCell surname = new PdfPCell(new Phrase("SURNAME"));
    surname.setBackgroundColor(BaseColor.BLUE);
    table.addCell(surname);
    PdfPCell firstname = new PdfPCell(new Phrase("FIRST NAME"));
    firstname.setBackgroundColor(BaseColor.RED);
    table.addCell(firstname);
    PdfPCell middlename = new PdfPCell(new Phrase("MIDDLE NAME"));
    middlename.setBackgroundColor(BaseColor.GREEN);
    table.addCell(middlename);
    PdfPCell f1 = new PdfPCell(new Phrase("1"));
    f1.setBackgroundColor(BaseColor.PINK);
    table.addCell(f1);
    PdfPCell f2 = new PdfPCell(new Phrase("James"));
    f2.setBackgroundColor(BaseColor.MAGENTA);
    table.addCell(f2);
    PdfPCell f3 = new PdfPCell(new Phrase("Fish"));
    f3.setBackgroundColor(BaseColor.ORANGE);
    table.addCell(f3);
    PdfPCell f4 = new PdfPCell(new Phrase("Stone"));
    f4.setBackgroundColor(BaseColor.DARK_GRAY);
    table.addCell(f4);
    PdfPCell f5 = new PdfPCell(new Phrase("17"));
    f5.setBackgroundColor(BaseColor.LIGHT_GRAY);
    table.addCell(f5);
    document.add(table);
    document.close();
}

Make sure that you use a recent, official version of iText(Sharp). We know of people who have been distributing obsolete (and defective) versions of iText(Sharp).

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