使用iText生成PDF文档点滴

最近做项目用到了iText工具包生成PDF文档，就使用中的技巧做个留痕。
因为用到的最多的是关于在PDF中生成表格，所以只记录了一些表格的操作。

//List中放的是需要导出的信息对象，这个可以根据自己的情况不同
public File exportPDFforPayment(List appealList)
	{
		
		Document document = new Document(PageSize.A4,10,10,10,10); //设置生成的文档的大小，以及边距
		float totalAmount = 0;
		String filepath = "c:\\test.pdf";
		try {
			PdfWriter.getInstance(document, new FileOutputStream(filepath));
			document.addSubject("Payment Infomation");//设置主题
			document.addTitle("title");//设置标题
		/*这些必须在文档打开前调用*/
			document.open();
			Table containtTable = new Table(1);//创建一个一列的表格
			containtTable.setPadding(3);
			containtTable.setWidth(100);
			containtTable.setBorderWidth(0);
			containtTable.setDefaultCellBorder(0);//设置如果某个cell没有填充值的时候边框的宽度
			
			/*这里循环list,每个对象输出一行，并且实现隔行变色*/
			for (int i=0;i<appealList.size();i++)
			{
				Cell cell = new Cell();//创建一个单元格
				if (i%2==0)
					cell.addElement(this.makeInnerTable(false,appealList.get(i)));//为单元格增加元素，这里实现的是单元格中再套一个表格
				else
					cell.addElement(this.makeInnerTable(true,appealList.get(i)));
				containtTable.addCell(cell);//表格加入该单元格
				totalAmount+=Float.parseFloat(appealList.get(i).getAmount());
			}
			
			Cell cell = new Cell(new Chunk("Total Amount:$"+totalAmount, FontFactory.getFont("Verdana,Arial", 8,Font.UNDERLINE)));//设置单元格的元素，这次是个单元格中直接加入文字
			cell.setBorderWidth(0);
			cell.setHorizontalAlignment(Cell.ALIGN_RIGHT);//设置单元格对其方式
			containtTable.addCell(cell);
			
			document.add(containtTable);//文档加入表格
			document.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (DocumentException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		return new File(filepath);
	}
	
         /*该方法实现嵌套的表格*/
	private Table makeInnerTable(boolean isodd,Appeal appeal) throws BadElementException
	{
		Font titleFont = FontFactory.getFont("Verdana,Arial", 8,Font.BOLD);
		Font contextFont = FontFactory.getFont("Verdana,Arial", 8);
		Color oddColor = new Color(215,228,219);

		Color finalColor = new Color(255,255,255);
		
		if (isodd)
			finalColor = oddColor;
		
		
		float widths[] = {15f,13f,10f,14f,12f,13f,9f,15f};//设置表格的列宽
		Table mytable = new Table(8);//一个8列的表格
		mytable.setWidths(widths);//设置表格的宽度
		mytable.setPadding(0);
		mytable.setSpacing(0);
		mytable.setWidth(97);
		mytable.setBorderWidth(1);
		mytable.setAutoFillEmptyCells(true);
		mytable.setDefaultCellBorderWidth(0);
		mytable.setBackgroundColor(finalColor);//设置背景色
		
		Cell cell1_1 = new Cell(new Chunk("Payment Number:", titleFont));
		cell1_1.setBorderWidth(0);
		cell1_1.setBackgroundColor(finalColor);
		mytable.addCell(cell1_1);
		
		Cell cell1_2 = new Cell(new Chunk(appeal.getPaymentNum(), contextFont));
		cell1_2.setBorderWidth(0);
		cell1_2.setBackgroundColor(finalColor);
		mytable.addCell(cell1_2);
		
		Cell cell1_3 = new Cell(new Chunk("Full Name:", titleFont));
		cell1_3.setBorderWidth(0);
		cell1_3.setBackgroundColor(finalColor);
		mytable.addCell(cell1_3);
		
		Cell cell1_4 = new Cell(new Chunk(appeal.getFullName(), contextFont));
		cell1_4.setBorderWidth(0);
		cell1_4.setBackgroundColor(finalColor);
		mytable.addCell(cell1_4);
		
		Cell cell1_5 = new Cell(new Chunk("Street Address:", titleFont));
		cell1_5.setBorderWidth(0);
		cell1_5.setBackgroundColor(finalColor);
		mytable.addCell(cell1_5);
		
		Cell cell1_6 = new Cell(new Chunk(appeal.getApt()+" "+appeal.getStreet(), contextFont));
		cell1_6.setBorderWidth(0);
		cell1_6.setBackgroundColor(finalColor);
		mytable.addCell(cell1_6);
		
		Cell cell1_7 = new Cell(new Chunk("Amount:", titleFont));
		cell1_7.setBorderWidth(0);
		cell1_7.setBackgroundColor(finalColor);
		mytable.addCell(cell1_7);
		
		Cell cell1_8 = new Cell(new Chunk("$"+appeal.getAmount(), contextFont));
		cell1_8.setBorderWidth(0);
		cell1_8.setBackgroundColor(finalColor);
		mytable.addCell(cell1_8);			
		
		Cell cell2_1 = new Cell(new Chunk("TMK Appealing On:", titleFont));
		cell2_1.setBorderWidth(0);
		cell2_1.setBackgroundColor(finalColor);
		mytable.addCell(cell2_1);
		
		Cell cell2_2 = new Cell(new Chunk(appeal.getTmk(), contextFont));
		cell2_2.setBorderWidth(0);
		cell2_2.setBackgroundColor(finalColor);
		mytable.addCell(cell2_2);
		
		Cell cell2_3 = new Cell(new Chunk(" ", titleFont));
		cell2_3.setBorderWidth(0);
		cell2_3.setBackgroundColor(finalColor);
		mytable.addCell(cell2_3);
		
		
		Cell cell2_4 = new Cell(new Chunk(" ", contextFont));
		cell2_4.setBorderWidth(0);
		cell2_4.setBackgroundColor(finalColor);
		mytable.addCell(cell2_4);
		
		Cell cell2_5 = new Cell(new Chunk("City:", titleFont));
		cell2_5.setBorderWidth(0);
		cell2_5.setBackgroundColor(finalColor);
		mytable.addCell(cell2_5);
		
		Cell cell2_6 = new Cell(new Chunk(appeal.getCity(), contextFont));
		cell2_6.setBorderWidth(0);
		cell2_6.setBackgroundColor(finalColor);
		mytable.addCell(cell2_6);
		
		Cell cell2_7 = new Cell(new Chunk("Submitted:", titleFont));
		cell2_7.setBorderWidth(0);
		cell2_7.setBackgroundColor(finalColor);
		mytable.addCell(cell2_7);
		
		Cell cell2_8 = new Cell(new Chunk(appeal.getSubmitTime(), contextFont));
		cell2_8.setBorderWidth(0);
		cell2_8.setBackgroundColor(finalColor);
		mytable.addCell(cell2_8);
		
		Cell cell3_1 = new Cell(new Chunk("Title:", titleFont));
		cell3_1.setBorderWidth(0);
		cell3_1.setBackgroundColor(finalColor);
		mytable.addCell(cell3_1);
		
		Cell cell3_2 = new Cell(new Chunk(appeal.getTitle(), contextFont));
		cell3_2.setBorderWidth(0);
		cell3_2.setBackgroundColor(finalColor);
		mytable.addCell(cell3_2);
		
		Cell cell3_3 = new Cell(new Chunk("Home Phone:", titleFont));
		cell3_3.setBorderWidth(0);
		cell3_3.setBackgroundColor(finalColor);
		mytable.addCell(cell3_3);
		
		Cell cell3_4 = new Cell(new Chunk(appeal.getTelephone(), contextFont));
		cell3_4.setBorderWidth(0);
		cell3_4.setBackgroundColor(finalColor);
		mytable.addCell(cell3_4);
		
		Cell cell3_5 = new Cell(new Chunk("Zip:", titleFont));
		cell3_5.setBorderWidth(0);
		cell3_5.setBackgroundColor(finalColor);
		mytable.addCell(cell3_5);
		
		Cell cell3_6 = new Cell(new Chunk(appeal.getZip(), contextFont));
		cell3_6.setBorderWidth(0);
		cell3_6.setBackgroundColor(finalColor);
		mytable.addCell(cell3_6);
		
		Cell cell3_7 = new Cell(new Chunk(" ", titleFont));
		cell3_7.setBorderWidth(0);
		cell3_7.setBackgroundColor(finalColor);
		mytable.addCell(cell3_7);
		
		Cell cell3_8 = new Cell(new Chunk(" ", contextFont));
		cell3_8.setBorderWidth(0);
		cell3_8.setBackgroundColor(finalColor);
		mytable.addCell(cell3_8);
		return mytable;
	}