PdfContentByte pcb = pw.getDirectContent();
pcb.beginText();
pcb.setFontAndSize(bfChinese, 12);
pcb.setTextMatrix(550,120);
pcb.showText("发 证 税 务 机 关");
pcb.endText();
pcb.beginText();
pcb.setFontAndSize(bfChinese, 12);
pcb.setTextMatrix(540,100);
pcb.showText(swdjz.getHzdjrq());
pcb.endText();