使用iText设置标题行的格式 [英] set format of header row using iText

问题描述

我正在使用iText5从CSV生成PDF文件。我需要格式化文件，以便标题行（发生在每个页面的开头）应该在

更大的字体

粗体和

以背景颜色突出显示

为了清楚起见，我知道如何设置字体样式/大小/颜色。我很难找到如何为标题行做

我该怎么做？请帮助。

提前致谢

解决方案

您的要求已解释详情请参阅教程视频，更具体地说，请参阅 United States 示例。在此示例中，我们采用包含美国不同州的CSV文件： united_states.csv

  name; abbr; capital;人口最多的城市;人口;平方英里;时区1;时区2; dst 
 ALABAMA; AL; Montgomery; Birmingham; 4,708,708; 52,423; CST（UTC-6）; EST（UTC-5）; YES 
 ALASKA; AK; Juneau; Anchorage; 698,473; 656,425; AKST（ UTC-09）; HST（UTC-10）; YES 
 ARIZONA; AZ; Phoenix; Phoenix; 6,595,778; 114,006; MT（UTC-07）; ; NO 
 ARKANSAS; AR;小石城;小石城; 2,889,450; 53,182; CST（UTC-6）; ; YES 
 CALIFORNIA; CA; Sacramento;洛杉矶; 36,961,664; 163,707; PT（UTC-8）; ; YES 
  

我们将这些解析成带有重复标题的PDF： united_states.pdf

唯一的区别是，您希望标题中的文本为粗体。这只需要对代码进行最小的更改：

  public void createPdf（String dest）抛出IOException，DocumentException {
 Document document = new Document（PageSize.A4.rotate（））; 
 PdfWriter.getInstance（document，new FileOutputStream（dest））; 
 document.open（）; 
 PdfPTable table = new PdfPTable（9）; 
 table.setWidthPercentage（100）; 
 table.setWidths（new int [] {4,1,3,4,3,3,3,3,1}}; 
 BufferedReader br = new BufferedReader（new FileReader（DATA））; 
 String line = br.readLine（）; 
进程（table，line，new Font（FontFamily.HELVETICA，16，Font.BOLD））; 
 table.setHeaderRows（1）; 
 while（（line = br.readLine（））！= null）{
 process（table，line，new Font（FontFamily.HELVETICA，12））; 
} 
 br.close（）; 
 document.add（table）; 
 document.close（）; 
} 
 
 public void process（PdfPTable table，String line，Font font）{
 StringTokenizer tokenizer = new StringTokenizer（line，;）; 
 while（tokenizer.hasMoreTokens（））{
 table.addCell（new Phrase（tokenizer.nextToken（），font））; 
} 
} 
  

仔细看看<$ c $的价格c> process（）方法已更改：它现在接受 font 参数，以便我们可以为标题定义更大，更大胆的字体。 / p>

I am generating a PDF file from a CSV using iText5. I need to format the file so that the header row (which occurs in the beginning of every page) should be in a

bigger font

bold and

highlighted by a background colour

Just to be clear, I know how to set the font style/size/colour. I'm having a tough time finding out how to do that for the header rows

How can I do that? Please help.

Thanks in advance

解决方案

Your requirement is explained in large detail in our tutorial video, more specifically in the UnitedStates example. In this example, we take a CSV file containing the different states of the US: united_states.csv

name;abbr;capital;most populous city;population;square miles;time zone 1;time zone 2;dst
ALABAMA;AL;Montgomery;Birmingham;4,708,708;52,423;CST (UTC-6);EST (UTC-5);YES
ALASKA;AK;Juneau;Anchorage;698,473;656,425;AKST (UTC-09) ;HST (UTC-10) ;YES
ARIZONA;AZ;Phoenix;Phoenix;6,595,778;114,006;MT (UTC-07); ;NO
ARKANSAS;AR;Little Rock;Little Rock;2,889,450;53,182;CST (UTC-6); ;YES
CALIFORNIA;CA;Sacramento;Los Angeles;36,961,664;163,707;PT (UTC-8); ;YES

And we parse these into a PDF with a repeating header: united_states.pdf

The only difference, is that you want the text in the header to be bold. This requires only a minimal change to the code:

public void createPdf(String dest) throws IOException, DocumentException {
    Document document = new Document(PageSize.A4.rotate());
    PdfWriter.getInstance(document, new FileOutputStream(dest));
    document.open();
    PdfPTable table = new PdfPTable(9);
    table.setWidthPercentage(100);
    table.setWidths(new int[]{4, 1, 3, 4, 3, 3, 3, 3, 1});
    BufferedReader br = new BufferedReader(new FileReader(DATA));
    String line = br.readLine();
    process(table, line, new Font(FontFamily.HELVETICA, 16, Font.BOLD));
    table.setHeaderRows(1);
    while ((line = br.readLine()) != null) {
        process(table, line, new Font(FontFamily.HELVETICA, 12));
    }
    br.close();
    document.add(table);
    document.close();
}

public void process(PdfPTable table, String line, Font font) {
    StringTokenizer tokenizer = new StringTokenizer(line, ";");
    while (tokenizer.hasMoreTokens()) {
        table.addCell(new Phrase(tokenizer.nextToken(), font));
    }
}

Take a close look at how the process() method was changed: it now accepts a font parameter so that we can define a bigger, bolder font for the header.

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