表格单元格中的大表调用分页符 [英] Large table in table cell invoke page break

问题描述

我有一个PdfPTable和一列。一页适合50行。如果我向表中添加一些文本数据（例如，300行），报告工作正常。当我将PdfPTable添加到单元格中时（例如，20个字符串单元格，PdfPTable（其中包含20行或更少）和270个字符串单元格），所有工作都可以正常工作：

  / -------- 
 20个字符串行
内部表（20行）
 10个字符串行
 /  - ------ 
 ...额外的行
  

但是，当我的内心表有更多行（mainTable [20个字符串行，innerTable [90个字符串行]，270个字符串行]，报告中断第一页，并在第二页上启动innerTable输出。

  / --------- 
 20行字符串
 30行空格
 / --------- 
内表（90行中的50行）
 / --------- 
内表（90行中的40行）
 ..附加数据
  

我需要这个：

  / --------- 
 20个字符串行
内表（90行30行）
 / --------- 
内表（90行50行）
 / --------- 
内表（80行10行）
 ..附加数据
  

有人知道解决方案吗？

ps itext version - 2.1.7

解决方案

请查看

I have one PdfPTable with one column. One page fit 50 rows. If I add some text data to table (for an example, 300 rows), report work fine. When I add a PdfPTable into cell (for example, 20 string cells, PdfPTable(with 20 rows in it or less), and 270 string cells), all work fine too:

/--------
20 string rows
inner table (20 rows)
10 string rows
/-------
...additional rows

But, when my inner table have more rows (mainTable[20 string rows, innerTable[90 string rows], 270 string rows], report break first page, and start innerTable output on the second page.

/---------
20 string rows
whitespace for 30 rows
/---------
inner table (50 rows from 90)
/---------
inner table (40 rows from 90)
..additional data

And I need this:

/---------
20 string rows
inner table (30 rows from 90)
/---------
inner table (50 rows from 90)
/---------
inner table (10 rows from 80)
..additional data

Anybody know solution?

ps itext version - 2.1.7

解决方案

Please take a look at the NestedTables2 example. In this example, we tell iText that it's OK to split cells as soon as a row doesn't fit on a page:

This is not the default: by default, iText will try to keep a row intact by forwarding it to the next page. Only if the row doesn't fit the page, the row will be split.

Changing the default involves adding a single line to your code. That line is called: table.setSplitLate(false);

This is the full method that created the PDF shown in the screen shot:

public void createPdf(String dest) throws IOException, DocumentException {
    Document document = new Document();
    PdfWriter.getInstance(document, new FileOutputStream(dest));
    document.open();
    PdfPTable table = new PdfPTable(2);
    table.setSplitLate(false);
    table.setWidths(new int[]{1, 15});
    for (int i = 1; i <= 20; i++) {
        table.addCell(String.valueOf(i));
        table.addCell("It is not smart to use iText 2.1.7!");
    }
    PdfPTable innertable = new PdfPTable(2);
    innertable.setWidths(new int[]{1, 15});
    for (int i = 0; i < 90; i++) {
        innertable.addCell(String.valueOf(i + 1));
        innertable.addCell("Upgrade if you're a professional developer!");
    }
    table.addCell("21");
    table.addCell(innertable);
    for (int i = 22; i <= 40; i++) {
        table.addCell(String.valueOf(i));
        table.addCell("It is not smart to use iText 2.1.7!");
    }
    document.add(table);
    document.close();
}

Note that you should not use iText 2.1.7. If you do, you could have a problem with your employer, customer, investor. Read more about this in the legal section of the free ebook The Best iText Questions on StackOverflow

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