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在用ITEXT写PDF的过程中遇到表与表格标题不分开,图与图片标题不分开的需求。
通常报表中的表格和图片的标题会遵循表上图下,为了方便读者阅读一般要求表格与表格标题不分开,图片也是。通过查询API发现ITEXT提供了table.setKeepTogether(true)的方法,由此可以解决上述问题。
以表格为例:
图片情况:
图片当成b,把图片标题当成c即可。
需要导入的包:itext-pdfa-5.5.6.jar、itext-xtra-5.5.6.jar、itext-5.5.6.jar、itext-asian.jar
package itext;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
/** * Created on 2017/5/16 * Author: youxingyang. */
public class TableAndTitle {
/** * @param args */
public static void main(String[] args) throws Exception {
String fileName = "tableAndTitle.pdf";
TableAndTitle.test(fileName);
}
private static void test(String fileName) {
Document document = new Document();
try {
PdfWriter.getInstance(document, new FileOutputStream(fileName));
document.open();
//加一些测试内容
for (int i = 0; i < 35; i++) {
document.add(new Paragraph("content" + (i + 1)));
}
PdfPTable table = new PdfPTable(1);
table.setKeepTogether(true);
table.setSplitLate(false);
PdfPTable table1 = new PdfPTable(1);
PdfPCell cell0 = new PdfPCell();
Paragraph p = new Paragraph("table title sample");
p.setAlignment(1);
p.setSpacingBefore(15f);
cell0.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);
cell0.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE);//然并卵
cell0.setPaddingTop(-2f);//把字垂直居中
cell0.setPaddingBottom(8f);//把字垂直居中
cell0.addElement(p);
cell0.setBorder(0);
table1.addCell(cell0);
PdfPTable table2 = new PdfPTable(2);
for (int a = 0; a < 20; a++) {
PdfPCell cell = new PdfPCell();
Paragraph pp;
if (a == 0 || a == 1) {
pp = str2ParaByTwoFont("tableTitle" + (a + 1), 9f, BaseColor.BLACK, Font.BOLD); //小五 加粗
cell.setBackgroundColor(new BaseColor(128, 128, 255));
} else {
pp = str2ParaByTwoFont("tableContent" + (a - 1), 9f, BaseColor.BLACK); //小五
}
pp.setAlignment(1);
cell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);
cell.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE);//然并卵
cell.setPaddingTop(-2f);//把字垂直居中
cell.setPaddingBottom(8f);//把字垂直居中
cell.addElement(pp);
table2.addCell(cell);
}
PdfPCell c1 = new PdfPCell();
c1.setBorder(0);
c1.addElement(table1);
PdfPCell c2 = new PdfPCell();
c2.setBorder(0);
c2.addElement(table2);
table.addCell(c1);
table.addCell(c2);
document.add(table);
document.close();
} catch (DocumentException | FileNotFoundException e) {
e.printStackTrace();
}
}
/** * 两种字体显示文字 * @param cont * @param size * @param color * @return */
private static Paragraph str2ParaByTwoFont(String cont, float size, BaseColor color) {
Paragraph res = new Paragraph();
FontSelector selector = new FontSelector();
//非汉字字体颜色
Font f1 = FontFactory.getFont(FontFactory.TIMES_ROMAN, size);
f1.setColor(color);
//汉字字体颜色
Font f2 = FontFactory.getFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED, size);
f2.setColor(color);
selector.addFont(f1);
selector.addFont(f2);
Phrase ph = selector.process(cont);
res.add(ph);
return res;
}
/** * 两种字体显示文字 * @param cont * @param size * @param color * @param bold * @return */
private static Paragraph str2ParaByTwoFont(String cont, float size, BaseColor color, int bold) {
Paragraph res = new Paragraph();
FontSelector selector = new FontSelector();
//非汉字字体颜色
Font f1 = FontFactory.getFont(FontFactory.TIMES_ROMAN, size);
f1.setColor(color);
f1.setStyle(bold);
//汉字字体颜色
Font f2 = FontFactory.getFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED, size);
f2.setColor(color);
f2.setStyle(bold);
selector.addFont(f1);
selector.addFont(f2);
Phrase ph = selector.process(cont);
res.add(ph);
return res;
}
}
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原文链接 : https://blog.csdn.net/sand_clock/article/details/72257429
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