Java如何在iText中设置Table的单元格对齐方式？
我们可以水平和垂直设置表格单元格的内容对齐方式。要设置水平对齐方式，我们使用setHorizontalAlignment()方法。要垂直对齐，我们使用setVerticalAlignment()方法。对齐常数在com.itextpdf.text.Element类中定义。
package org.nhooo.example.itextpdf;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
public class TableCellAlignment {
public static void main(String[] args) {
Document doc = new Document();
try {
PdfWriter.getInstance(doc, new FileOutputStream("TableCellAlignment.pdf"));
doc.open();
//设置表格的单元格水平对齐
PdfPTable table = new PdfPTable(3);
PdfPCell cell1 = new PdfPCell(new Phrase("Cell 1"));
cell1.setHorizontalAlignment(Element.ALIGN_LEFT);
table.addCell(cell1);
PdfPCell cell2 = new PdfPCell(new Phrase("Cell 2"));
cell2.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(cell2);
PdfPCell cell3 = new PdfPCell(new Phrase("Cell 3"));
cell3.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell3);
table.completeRow();
//设置表格的单元格垂直对齐
PdfPCell[] cells = new PdfPCell[3];
int[] alignments = new int[]{
Element.ALIGN_TOP,
Element.ALIGN_MIDDLE,
Element.ALIGN_BOTTOM
};
for (int i = 0; i < cells.length; i++) {
cells[i] = new PdfPCell(new Phrase("Cell " + (i + 1)));
cells[i].setMinimumHeight(50);
cells[i].setVerticalAlignment(alignments[i]);
table.addCell(cells[i]);
}
table.completeRow();
doc.add(table);
} catch (DocumentException | FileNotFoundException e) {
e.printStackTrace();
} finally {
doc.close();
}
}
}Maven依赖
<!-- http://repo1.maven.org/maven2/com/itextpdf/itextpdf/5.5.10/itextpdf-5.5.10.jar -->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.10</version>
</dependency>