在java中制作多个pdf文档

This is my code:

这是我的代码:

try { 
        dozen = magazijn.getFfd().vraagDozenOp();
        for (int i = 0; i < dozen.size(); i++) { 
            PdfWriter.getInstance(doc, new FileOutputStream("Order" + x + ".pdf"));
            System.out.println("Writer instance created");
            doc.open(); 
            System.out.println("doc open"); 
            Paragraph ordernummer = new Paragraph(order.getOrdernummer()); 
            doc.add(ordernummer); 
            doc.add( Chunk.NEWLINE );
            for (String t : text) { 
                Paragraph klant = new Paragraph(t);
                doc.add(klant); 
            } 
            doc.add( Chunk.NEWLINE );
            Paragraph datum = new Paragraph (order.getDatum());
            doc.add(datum);
            doc.add( Chunk.NEWLINE );
            artikelen = magazijn.getFfd().vraagArtikelenOp(i);
            for (Artikel a : artikelen){
                artikelnr.add(a.getArtikelNaam());
            }
            for (String nr: artikelnr){
                Paragraph Artikelnr = new Paragraph(nr);
                doc.add(Artikelnr);
            }

            doc.close(); 
            artikelnr.clear(); 
            x++; 
            System.out.println("doc closed"); 
        }

    } catch (Exception e) { 
        System.out.println(e); 
    }

I get this exception: com.itextpdf.text.DocumentException: The document has been closed. You can't add any Elements.

我得到此异常:com.itextpdf.text.DocumentException:文档已关闭。您无法添加任何元素。

can someone help me fix this so that the other pdf can be created and paragrphs added?

有人可以帮我解决这个问题,以便可以创建其他pdf并添加paragrphs吗?

2 个解决方案

#1

Alright, your intent is not very clear from your code and question so I'm going to operate under the following assumptions:

好吧,你的意图并不是很清楚你的代码和问题,所以我将在以下假设下运作:

You are creating a report for each box you're processing

您正在为正在处理的每个框创建报告

Each report needs to be a separate PDF file

每个报告都需要是一个单独的PDF文件

You're getting a DocumentException on the second iteration of the loop, you're trying to add content to a Document that has been closed in the previous iteration via doc.close();. 'doc.close' will finalize the Document and write everything still pending to any linked PdfWriter.

你在循环的第二次迭代中得到了一个DocumentException,你试图通过doc.close();将内容添加到上一次迭代中已经关闭的Document中。 'doc.close'将最终确定文档并将所有尚未处理的内容写入任何链接的PdfWriter。

If you wish to create separate pdfs for each box, you need to create a seperate Document in your loop statement as well, since creating a new PdfWriter via PdfWriter.getInstance(doc, new FileOutputStream("Order" + x + ".pdf")); will not create a new Document on its own.

如果你想为每个盒子创建单独的pdf,你需要在你的循环语句中创建一个单独的Document,因为通过PdfWriter.getInstance创建一个新的PdfWriter(doc,new FileOutputStream(“Order”+ x +“。pdf” ));不会自己创建新文档。

If I'm wrong with assumption 2 and you wish to add everything to a single PDF, move doc.close(); outside of the loop and create only a single PdfWriter

如果我对假设2错了,并且您希望将所有内容添加到单个PDF中,请移动doc.close();在循环之外,只创建一个PdfWriter

#2

-1

You can try something like this using Apache PDFBox

您可以使用Apache PDFBox尝试这样的事情

File outputFile = new File(path);
outputFile.createNewFile();
PDDocument newDoc = new PDDocument();

then create a PDPage and write what you wanna write in that page. After your page is ready, add it to the newDoc and in the end save it and close it

然后创建一个PDPage并写下你想在该页面中写的内容。页面准备好后,将其添加到newDoc,最后保存并关闭它

newDoc.save(outputFile);

newDoc.close()

repeat this dozen.size() times and keep changing the file's name in path for every new document.

重复此dozen.size()次并继续为每个新文档更改路径中的文件名。

#1