我照网上的写法找了段代码，读取模板也读取到了，但是写入就没成功，方便的话，前辈们帮看一下

public static void exPdf() {
		
		 // 模板路径  
        String templatePath = "D:/法院公告.pdf";  
        // 生成的新文件路径  
        String newPDFPath = "D:/ceshi.pdf"; 
        PdfReader reader;  
        FileOutputStream out;  
        ByteArrayOutputStream bos;  
        PdfStamper stamper;  
        try {
			out = new FileOutputStream(newPDFPath);// 输出流  
			reader = new PdfReader(templatePath);// 读取pdf模板  
            bos = new ByteArrayOutputStream();  
            stamper = new PdfStamper(reader, bos);  
            AcroFields form = stamper.getAcroFields(); 
            
            
            String[] str = { "123456789", "TOP__ONE", "男", "1991-01-01", "130222111133338888"};
            int i = 0;  
            java.util.Iterator<String> it = form.getFields().keySet().iterator();  
            while (it.hasNext()) {  
                String name = it.next().toString();  
                System.out.println(name);  
                System.out.println("数据");
                form.setField(name, "sb");  
            } 
            stamper.setFormFlattening(true);// 如果为false那么生成的PDF文件还能编辑，一定要设为true  
            stamper.close();  
  
            Document doc = new Document();  
            PdfCopy copy = new PdfCopy(doc, out);  
            doc.open();  
            PdfImportedPage importPage = copy.getImportedPage(new PdfReader(bos.toByteArray()), 1);  
            copy.addPage(importPage);  
            doc.close();  
			
		} catch (Exception  e) {
			e.printStackTrace();
		}
        
	}