itext:根據模闆生成新的pdf

/**
     * 指派并生成新的PDF文檔
     * @param templatePDF    pdf模版路徑
     * @param outFile    輸出的PDF 路徑
     * @param hashMap    templatePDF對應的資料
     */
    public static void doSomeThing(String templatePDF,String outFile,HashMap<String,String> hashMap){
    	FileOutputStream fos = null;
    	PdfReader reader = null;
        try {
        	 //建立輸出流
        	 fos = new FileOutputStream(outFile);
        	 
        	 //讀取pdf模闆
             reader = new PdfReader(templatePDF);
             
             //将模闆資料放入輸出中，并進行操作
             PdfStamper stamp = new PdfStamper(reader,fos);
             
             //擷取模闆中的相關域資料
             AcroFields form = stamp.getAcroFields();
             
             //給相應域指派
             form = setField(form,hashMap);
             
             stamp.setFormFlattening(true);
             
             //加水印
//             int pageSize = reader.getNumberOfPages();
//             Image img = Image.getInstance("d://2.jpg");// 插入水印     
//             for(int i = 1; i <= pageSize; i++) {  
//            	 PdfContentByte under = stamp.getOverContent(i);  
//            	 img.setAbsolutePosition(150, 200);  
//                 under.addImage(img);  
//             }  

             stamp.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        }
        finally
        {
        	try {
				if(null != fos)
				{
					fos.close();
				}
				
				if(null != reader)
				{
					reader.close();
				}
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
        }
        
         
    }
    @SuppressWarnings({ "unchecked", "unchecked" })
    public static  AcroFields setField(AcroFields form,HashMap<String,String> fieldMap) {
    	
    	Map<String, Item> formMap = form.getFields();
    	 try {
    		//使用中文字型
    		BaseFont bfChinese =
    	                BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
//    		Font FontChinese = new Font(bfChinese, 12, Font.NORMAL);   
    		Set<String> it=formMap.keySet();
	        Iterator<String> itr=it.iterator();
	        while(itr.hasNext()){
                String temp = itr.next();
                form.setFieldProperty(temp, "textfont", bfChinese, null);
                form.setField(temp, fieldMap.get(temp));
	        }
		 } catch (IOException e) {
	         e.printStackTrace();
	     } catch (DocumentException e) {
	         e.printStackTrace();
	     }
        return form;
    }
    
    public static void main(String[] args) {
        HashMap<String, String> hashMap = new HashMap<String, String>();
        hashMap.put("username", "張三");
        hashMap.put("datetime", "2015-09-10");
        hashMap.put("area", "北京");
        PdfTemplate.doSomeThing("d://moreXieyi.pdf","NewsPDF"+".pdf", hashMap);
    }